Transcript
TPS79101-EP, TPS79118-EP TPS79133-EP, TPS79147-EP
www.ti.com ............................................................................................................................................................ SGLS161A – APRIL 2003 – REVISED JUNE 2008
ULTRALOW NOISE, HIGH PSRR, FAST RF, 100-mA LOW-DROPOUT LINEAR REGULATORS FEATURES
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• 100-mA Low-Dropout Regulator With EN • Available in 1.8-V, 3.3-V, 4.7-V, and Adjustable Versions • High PSRR (70 dB at 10 kHz) • Ultralow Noise (15 µVRMS) • Fast Start-Up Time (63 µs) • Stable With Any 1-µF Ceramic Capacitor • Excellent Load/Line Transient • Very Low Dropout Voltage (38 mV at Full Load, TPS79147) • 5-Pin SOT23 (DBV) Package • TPS792xx Provides EN Options 2
APPLICATIONS • • •
VCOs RF Bluetooth™, Wireless LAN
SUPPORTS DEFENSE, AEROSPACE, AND MEDICAL APPLICATIONS • • • •
DESCRIPTION The TPS791xx family of low-dropout (LDO) low-power linear voltage regulators features high power supply rejection ratio (PSRR), ultralow noise, fast start-up, and excellent line and load transient responses in a small outline, SOT23, package. Each device in the family is stable, with a small 1-µF ceramic capacitor on the output. The family uses an advanced, proprietary BiCMOS fabrication process to yield extremely low dropout voltages (e.g., 38 mV at 100 mA, TPS79147). Each device achieves fast start-up times (approximately 63 µs with a 0.001-µF bypass capacitor) while consuming very low quiescent current (170 µA typical). Moreover, when the device is placed in standby mode, the supply current is reduced to less than 1 µA. The TPS79118 exhibits approximately 15 µVRMS of output voltage noise with a 0.1-µF bypass capacitor. Applications with analog components that are noise sensitive, such as portable RF electronics, benefit from the high-PSRR and low-noise features as well as the fast response time.
Controlled Baseline One Assembly/Test Site One Fabrication Site Available in Military (–55°C/125°C) Temperature Range (1) Extended Product Life Cycle Extended Product-Change Notification Product Traceability
• • • (1)
Custom temperature ranges available
TJ
–40°C to 125°C
OUTPUT VOLTAGE
ORDERING INFORMATION (1) PACKAGE (2)
ORDERABLE PART NUMBER
TOP-SIDE MARKING
1.2 to 5.5 V
TPS79101DBVREP
PEUE
1.8 V
TPS79118DBVREP
PERE
TPS79133DBVREP
PESE
TPS79147DBVREP
PETE
TPS79133MDBVTEP
PIDM
3.3 V
SOT23 (DBV)
Reel of 3000
SOT23 (DBV)
Reel of 250
4.7 V –55°C to 125°C (1) (2)
3.3 V
For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI web site at www.ti.com. Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.
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Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. Bluetooth is a trademark of Bluetooth SIG, Inc..
PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.
Copyright © 2003–2008, Texas Instruments Incorporated On products compliant to MIL-PRF-38535, all parameters are tested unless otherwise noted. On all other products, production processing does not necessarily include testing of all parameters.
TPS79101-EP, TPS79118-EP TPS79133-EP, TPS79147-EP SGLS161A – APRIL 2003 – REVISED JUNE 2008 ............................................................................................................................................................ www.ti.com
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.
2
EN
3
OUT 100
4
DBV PACKAGE (TOP VIEW) IN
1
6
90
BYPASS
Fixed Option
OUT
GND
2
5
FB
EN
3
4
BYPASS
VI = 4.3 V Co = 10 µF C(byp) = 0.01 µF
80
IO = 100 mA
60 IO = 10 mA
40 30
Adjustable Option
20 10
100
1k 10 k 100 k f − Frequency − Hz
1M
0.4 0.35
VO = 4.3 V Co = 1 µF C(byp) = 0.1 µF
0.3
70
50
Hz
GND
5
TPS79133
OUTPUT SPECTRAL NOISE DENSITY vs FREQUENCY
Output Spectral Noise Density −
1
Ripple Rejection − dB
IN
TPS79133
RIPPLE REJECTION vs FREQUENCY
µ V/
DBV PACKAGE (TOP VIEW)
10 M
0.25 0.2
IO = 100 mA
0.15 0.1
IO = 1 mA
0.05 0 100
1k 10 k f − Frequency − Hz
100 k
ABSOLUTE MAXIMUM RATINGS (1) over operating free-air temperature range (unless otherwise noted) TPS79101, TPS79118, TPS79133, TPS79147 Input voltage range (2)
–0.3 V to 6 V
Voltage range at EN
–0.3 V to VI + 0.3 V
Voltage on OUT
–0.3 V to 6 V
Peak output current
Internally limited
ESD rating, HBM
2 kV
ESD rating, CDM
500 V
Continuous total power dissipation Operating virtual-junction temperature range, TJ Operating ambient temperature range, TA
See Dissipation Rating Table All others
–40°C to 150°C
TPS79133MDBVTEP
–55°C to 125°C
All others
–40°C to 120°C
TPS79133MBVTEP
–55°C to 125°C
Storage temperature range, Tstg RθJC (3) RθJA (4) (1) (2) (3) (4)
2
–65°C to 150°C Low K
63.75°C/W
High K
63.75°C/W
Low K
256°C/W
High K
178.3°C/W
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. All voltage values are with respect to network ground terminal. The JEDEC low-K (1s) board design used to derive this data was a 3-inch × 3-inch, two-layer board with 2-ounce copper traces on top of the board. The JEDEC high-K (2s2p) board design used to derive this data was a 3-inch × 3-inch, multilayer board with 1-ounce internal power and ground planes and 2-ounce copper traces on top and bottom of the board.
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TPS79101-EP, TPS79118-EP TPS79133-EP, TPS79147-EP www.ti.com ............................................................................................................................................................ SGLS161A – APRIL 2003 – REVISED JUNE 2008
RECOMMENDED OPERATING CONDITIONS MI MA UNI N X T Input voltage, VI (1)
2.7
Continuous output current, IO (2)
–40 125
Operating junction temperature, TJ (1) (2)
5.5
V
0 100 mA TPS79133MBVTEP
–55 125
°C
To calculate the minimum input voltage for your maximum output current, use the following formula: VI(min) = VO(max) + VDO (max load) Continuous output current and operating junction temperature are limited by internal protection circuitry, but it is not recommended that the device operate under conditions beyond those specified in this table for extended periods of time. Notes: 1. See data sheet for absolute maximum and minimum recommended operating conditions. 2. Silicon operating-life design goal is 10 years at 105°C junction temperature (does not include package interconnect life). 3. Enhanced plastic product disclaimer applies.
1000
Estimated Life (Years)
Electromigration Fail Mode
100 Wirebond Voiding Fail Mode
10
1 100
110
120
130
140
150
160
Continuous T J (°C)
Figure 1. TPS79133 Operating Life Derating Chart
Copyright © 2003–2008, Texas Instruments Incorporated
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TPS79101-EP, TPS79118-EP TPS79133-EP, TPS79147-EP SGLS161A – APRIL 2003 – REVISED JUNE 2008 ............................................................................................................................................................ www.ti.com
ELECTRICAL CHARACTERISTICS over recommended operating free-air temperature range, (TJ = –40°C to 125°C), VI = VO(typ) + 1 V, IO = 1 mA, EN = 0 V, Co = 10 µF, Co(byp) = 0.01 µF (unless otherwise noted) PARAMETER
TEST CONDITIONS
MIN
TJ = 25°C, 1.22 V ≤ VO ≤ 5.2 V
TPS79101
0.98 VO
TJ = 25°C
TPS79118
1.836
3.234
TJ = 25°C
3.366 4.7
0 µA < IO < 100 mA, 5.2 V < VI < 5.5 V
4.606
0 µA < IO < 100 mA, TJ = 25°C
4.794 170
0 µA < IO < 100 mA
250
0 µA < IO < 100 mA, TJ = 25°C
Load regulation
5
VO + 1 V < VI ≤ 5.5 V, TJ = 25°C
Output voltage line regulation (ΔVO/VO) (2)
BW = 100 Hz to 100 kHz, IO = 100 mA, TJ = 25°C
0.12 C(byp) = 0.001 µF
32
C(byp) = 0.0047 µF
17
C(byp) = 0.01 µF
16
C(byp) = 0.1 µF
15
C(byp) = 0.001 µF
53
C(byp) = 0.0047 µF
67
RL 33 Ω, CO = 1 µF, TJ = 25°C
Output current limit
VO = 0 V (1)
285
600
UVLO threshold
VCC rising
2.25
2.65
UVLO hysteresis
TJ = 25°C, VCC rising
(1) (2)
µs
98
100
mA V mV
The minimum IN operating voltage is 2.7 V or VO(typ) + 1 V, whichever is greater. The maximum IN voltage is 5.5 V. The maximum output current is 100 mA. If VO ≤ 1.8 V then VImin = 2.7 V, VImax = 5.5 V: Line regulation (mV) + ǒ%ńVǓ
V
O
ǒV Imax * 2.7 VǓ
100 If VO ≥ 2.5 V then VImin = VO + 1 V, VImax = 5.5 V: Line regulation (mV) + ǒ%ńVǓ
4
%/V
µVRMS
Time, start-up (TPS79133)
C(byp) = 0.01 µF
µA mV
0.05
VO + 1 V < VI ≤ 5.5 V
Output noise voltage (TPS79118)
V
3.3
0 µA < IO < 100 mA, 4.3 V < VI < 5.5 V
Quiescent current (GND current)
1.02 VO
1.764
TJ = 25°C
TPS79147
UNIT
1.8
0 µA < IO < 100 mA, 2.8 V < VI < 5.5 V
TPS79133
MAX
VO
0 µA < IO < 100 mA (1), 1.22 V ≤ VO ≤ 5.2 V
Output voltage
TYP
ǒ
ǒ
1000
ǓǓ
VO V Imax * VO ) 1 V 100
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1000
Copyright © 2003–2008, Texas Instruments Incorporated
Product Folder Link(s): TPS79101-EP TPS79118-EP TPS79133-EP TPS79147-EP
TPS79101-EP, TPS79118-EP TPS79133-EP, TPS79147-EP www.ti.com ............................................................................................................................................................ SGLS161A – APRIL 2003 – REVISED JUNE 2008
ELECTRICAL CHARACTERISTICS (continued) over recommended operating free-air temperature range, (TJ = –40°C to 125°C), VI = VO(typ) + 1 V, IO = 1 mA, EN = 0 V, Co = 10 µF, Co(byp) = 0.01 µF (unless otherwise noted) PARAMETER
TEST CONDITIONS
Standby current
EN = VI, 2.7 V < VI < 5.5 V
High-level enable input voltage
2.7 V < VI < 5.5 V
Low-level enable input voltage
2.7 V < VI < 5.5 V
Input current (EN)
EN = VI
TPS79118 Power supply ripple rejection TPS79133
TPS79133 Dropout voltage (3) TPS79147 (3)
MIN
TYP
MAX
0.07
1
2
µA V
–1
f = 100 Hz, TJ = 25°C, IO = 10 mA
80
f = 100 Hz, TJ = 25°C, IO = 100 mA
75
f = 10 kHz, TJ = 25°C, IO = 100 mA
72
f = 100 kHz, TJ = 25°C, IO = 100 mA
45
f = 100 Hz, TJ = 25°C, IO = 10 mA
70
f = 100 Hz, TJ = 25°C, IO = 100 mA
75
f = 10 kHz, TJ = 25°C, IO = 100 mA
73
f = 100 kHz, TJ = 25°C, IO = 100 mA
37
IO = 100 mA, TJ = 25°C
50
IO = 100 mA
0.7
V
1
µA
dB
90
IO = 100 mA, TJ = 25°C
UNIT
38
IO = 100 mA
mV
70
IN voltage equals VO(typ) – 100 mV. The TPS79118 dropout voltage is limited by the input voltage range limitations.
Copyright © 2003–2008, Texas Instruments Incorporated
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TPS79101-EP, TPS79118-EP TPS79133-EP, TPS79147-EP SGLS161A – APRIL 2003 – REVISED JUNE 2008 ............................................................................................................................................................ www.ti.com
FUNCTIONAL BLOCK DIAGRAM—ADJUSTABLE VERSION VOUT
VIN Current Sense
UVLO
SHUTDOWN
ILIM
R1
_
GND
+ FB
EN R2
UVLO Thermal Shutdown
External to the Device 250 kΩ
Bandgap Reference
VIN
Vref
Bypass
FUNCTIONAL BLOCK DIAGRAM—FIXED VERSION VOUT
VIN UVLO
Current Sense
GND
SHUTDOWN
ILIM _
R1 +
EN UVLO R2 Thermal Shutdown
VIN
Bandgap Reference
250 kΩ
Vref
Bypass
TERMINAL FUNCTIONS TERMINAL NAME
I/O
DESCRIPTION
ADJ
FIXED
BYPASS
4
4
EN
3
3
I
The EN terminal is an input which enables or shuts down the device. When EN is a logic high, the device will be in shutdown mode. When EN is a logic low, the device will be enabled.
FB
5
N/A
I
This terminal is the feedback input voltage for the adjustable device.
GND
2
2
IN
1
1
I
The IN terminal is the input to the device.
OUT
6
5
O
The OUT terminal is the regulated output of the device.
6
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An external bypass capacitor, connected to this terminal, in conjunction with an internal resistor, creates a low-pass filter to further reduce regulator noise.
Regulator ground
Copyright © 2003–2008, Texas Instruments Incorporated
Product Folder Link(s): TPS79101-EP TPS79118-EP TPS79133-EP TPS79147-EP
TPS79101-EP, TPS79118-EP TPS79133-EP, TPS79147-EP www.ti.com ............................................................................................................................................................ SGLS161A – APRIL 2003 – REVISED JUNE 2008
TYPICAL CHARACTERISTICS TPS79118
TPS79133
TPS79118
OUTPUT VOLTAGE vs OUTPUT CURRENT
OUTPUT VOLTAGE vs OUTPUT CURRENT
OUTPUT VOLTAGE vs JUNCTION TEMPERATURE
3.303 VI = 2.8 V Co = 10 µF TJ = 25° C
3.302 V O − Output Voltage − V
1.801 1.8
1.799 1.798 1.797
1.815
3.301 3.3
3.299 3.298
20 40 60 80 IO − Output Current − mA
100
0
20
40
60
80
1.78 −40 −25 −10 5
100
20 35 50 65 80 95 110 125
TJ − Junction Temperature − °C
Figure 3.
Figure 4. TPS79118
OUTPUT VOLTAGE vs JUNCTION TEMPERATURE
GROUND CURRENT vs JUNCTION TEMPERATURE
OUTPUT SPECTRAL NOISE DENSITY vs FREQUENCY Hz
260 VI = 4.3 V Co = 10 µF
Ground Current − µ A
IO = 1 mA 3.3
3.29
IO = 100 mA
3.28
µ V/
220 200
IO = 1 mA
180 IO = 100 mA
160 140 120
3.27 −40 −25 −10 5
100
20 35 50 65 80 95 110 125
−40 −25 −10 5
TJ − Junction Temperature − °C
0.2 0.18
20 35 50 65 80 95 110 125
Output Spectral Noise Density −
240
3.31
0.14 0.12
IO = 100 mA
0.1 0.08
IO = 1 mA
0.06 0.04 0.02 0 100
TJ − Junction Temperature − °C
Figure 5.
VI = 2.8 V Co = 1 µF C(byp) = 0.1 µF
0.16
1k 10 k f − Frequency − Hz
Figure 6.
100 k
Figure 7.
TPS79118
TPS79118
TPS79133
OUTPUT SPECTRAL NOISE DENSITY vs FREQUENCY
OUTPUT SPECTRAL NOISE DENSITY vs FREQUENCY
OUTPUT SPECTRAL NOISE DENSITY vs FREQUENCY
IO = 1 mA
µ V/ Output Spectral Noise Density −
0.2
VI = 2.8 V Co = 10 µF C(byp) = 0.1 µF
0.15 IO = 100 mA 0.1
0.05
0 100
1k 10 k f − Frequency − Hz
100 k
Figure 8.
Copyright © 2003–2008, Texas Instruments Incorporated
1.2 IO = 0.001 µF 1
VI = 2.8 V IO = 100 mA Co = 10 µF
IO = 0.1 µF
0.6
IO = 0.01 µF
0.4
0.2 0 100
1k
10 k f − Frequency − Hz
VI = 4.3 V Co = 1 µF C(byp) = 0.1 µF
0.3
IO = 0.0047 µF
0.8
0.4 0.35
Output Spectral Noise Density −
Hz
0.25
Hz
V O − Output Voltage − V
IO = 100 mA 1.79
TPS79133
VI = 4.3 V Co = 10 µF
Hz
1.795
TPS79133
3.32
µ V/
IO = 1 mA 1.8
IO − Output Current − mA
Figure 2.
Output Spectral Noise Density −
1.81
1.785
3.297 0
VI = 2.8 V Co = 10 µF
1.805
µ V/
V O − Output Voltage − V
1.802
1.82
VI = 4.3 V Co = 10 µF TJ = 25° C
V O − Output Voltage − V
1.803
100 k
0.25 0.2
IO = 100 mA
0.15 0.1
IO = 1 mA
0.05 0 100
Figure 9.
1k 10 k f − Frequency − Hz
100 k
Figure 10.
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TPS79101-EP, TPS79118-EP TPS79133-EP, TPS79147-EP SGLS161A – APRIL 2003 – REVISED JUNE 2008 ............................................................................................................................................................ www.ti.com
TYPICAL CHARACTERISTICS (continued)
0.25 IO = 100 mA
0.2 0.15
IO = 1 mA
0.1 0.05 0 100
1k 10 k f − Frequency − Hz
IO = 0.001 µF
1.6 1.4
IO = 0.0047 µF
1.2
IO = 0.1 µF
1 0.8
IO = 0.01 µF
0.6 0.4 0.2 0
1k
100
100 k
10 k
30 VO = 1.8 V
20 10 0 0.001
µ V (RMS)
Figure 13. TPS792133
OUTPUT IMPEDANCE vs FREQUENCY
DROPOUT VOLTAGE vs JUNCTION TEMPERATURE
DROPOUT VOLTAGE vs OUTPUT CURRENT 100
VI = 3.2 V, Co = 10 µF
2 IO = 1 mA 1.5 1 IO = 100 mA 0.5
60 50
IO = 100 mA
40 30 20
0
100
1k
10 k 100 k
1M
10 M
Figure 14.
IO = 10 mA
DROPOUT VOLTAGE vs INPUT VOLTAGE Minimum Required Input Voltage − V
IO = 100 mA 100 TJ = 125°C 80
TJ = 25°C
40 TJ = −40°C 20
4
4.5
60 TJ = 25°C
50 40 30 20
0
−40 −25 −10 5 20 35 50 65 80 95 110 125 TJ − Junction Temperature − °C
4.7
TJ = −40°C
0
5
0.02
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0.06
0.08
0.1
Figure 16. TPS79118
RIPPLE REJECTION vs FREQUENCY 90
IO = 1 mA
80 TJ = 125°C
3.7 TJ = −40°C 3.2
TJ = 25°C
2.7
70 60 50 40 30 20 10
2
2.5
3
3.5
4
VO − Output Voltage − V
4.5
5
IO = 100 mA
0 100
VI = 2.8 V Co = 10 µF C(byp) = 0.01 µF 1k
10 k
100 k
1M
10 M
f − Frequency − Hz
VI − Input Voltage − V
Figure 17.
0.04
IO − Output Current − A
VI = 3.2 V Co = 10 µF
4.2
2.2 1.5
3.5
TJ = 125°C
70
10
5.2
120
3
80
Figure 15. MINIMUM REQUIRED INPUT VOLTAGE vs OUTPUT VOLTAGE
TPS79101
60
VI = 3.2 V CO = 10 µF
90 V DO − Dropout Voltage − mV
V DO − Dropout Voltage − mV
70
f − Frequency − Hz
8
0.1
0.01
C(bypass) − Bypass Capacitance − µF
Figure 12.
10
V DO − Dropout Voltage − mV
VO = 3.3 V
40
100 k
80
0 2.5
50
TPS79133
VI = 4.3 V Co = 10 µF TJ = 25°C
0 10
BW = 100 Hz to 100 kHz
60
TPS79133
3
2.5
70
f − Frequency − Hz
Figure 11.
Z o − Output Impedance − Ω
VI = 4.3 V IO = 100 mA Co = 10 µF
Ripple Rejection − dB
Output Spectral Noise Density −
1.8
VI = 4.3 V Co = 10 µF C(byp) = 0.1 µF
0.3
2
ROOT MEAN SQUARED OUTPUT NOISE vs BYPASS CAPACITANCE
RMS − Root Mean Squared Output Noise −
Hz
0.35
µ V/
0.4
Output Spectral Noise Density −
Hz
TPS79133
OUTPUT SPECTRAL NOISE DENSITY vs FREQUENCY
µ V/
TPS79133
OUTPUT SPECTRAL NOISE DENSITY vs FREQUENCY
Figure 18.
Figure 19.
Copyright © 2003–2008, Texas Instruments Incorporated
Product Folder Link(s): TPS79101-EP TPS79118-EP TPS79133-EP TPS79147-EP
TPS79101-EP, TPS79118-EP TPS79133-EP, TPS79147-EP www.ti.com ............................................................................................................................................................ SGLS161A – APRIL 2003 – REVISED JUNE 2008
TYPICAL CHARACTERISTICS (continued) TPS79118
TPS79118
TPS79133
RIPPLE REJECTION vs FREQUENCY
RIPPLE REJECTION vs FREQUENCY
RIPPLE REJECTION vs FREQUENCY
80
IO = 10 mA Ripple Rejection − dB
70 60 50 40 IO = 100 mA
30 20
0 100
1k
10 k
70 60 50 40 30
IO = 100 mA
20
VI = 2.8 V Co = 1 µF C(byp) = 0.01 µF
10
1M
0 100
10 M
1k
10 k
60 50 40 30 20
100 k
1M
10 M
10
1k 10 k 100 k f − Frequency − Hz
1M
10 M
Figure 21. TPS79133
TPS79133
Figure 22.
RIPPLE REJECTION vs FREQUENCY
RIPPLE REJECTION vs FREQUENCY
OUTPUT VOLTAGE, ENABLE VOLTAGE vs TIME (START-UP)
100
60 IO = 10 mA
30
20
20
Figure 23.
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1 0 C(byp) = 0.001 µF
IO = 10 mA
50
30
10 M
VI = 4.3 V VO = 3.3 V IO = 100 mA Co = 1 µF TJ = 25°C
2
60
40
1M
IO = 100 mA
70
40
1k 10 k 100 k f − Frequency − Hz
Enable Voltage − V
70
80
3
10
100
1k 10 k 100 k f − Frequency − Hz
1M
10 M
V O − Output Voltage − V
IO = 100 mA
100
VI = 4.3 V Co = 1 µF C(byp) = 0.1 µF
90 Ripple Rejection − dB
80
10
100
Figure 20.
VI = 4.3 V CO = 1 µF C(byp) = 0.01 µF
50
IO = 10 mA
TPS79133
100 90
IO = 100 mA
70
f − Frequency − Hz
f − Frequency − Hz
Ripple Rejection − dB
80
VI = 2.8 V Co = 1 µF C(byp) = 0.1 µF
10 100 k
VI = 4.3 V Co = 10 µF C(byp) = 0.01 µF
90 IO = 10 mA Ripple Rejection − dB
80 Ripple Rejection − dB
100
90
90
3 2
C(byp) = 0.0047 µF
1
C(byp) = 0.01 µF
0 0
20 40
60 80 100 120 140 160 180 200 t − Time − µs
Figure 24.
Figure 25.
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TPS79118
TPS79118
LINE TRANSIENT RESPONSE
LOAD TRANSIENT RESPONSE
∆ VO − Change In Output Voltage − mV
− Output Voltage − mV
TYPICAL CHARACTERISTICS (continued)
IO = 100 mA Co = 1 µF C(byp) = 0.01 µF
− Input Voltage − V V
O
10 0
0 −20 −40
Current Load − mA
−10
100
2.8
V O − Output Voltage − mV
0
10 20
30 40 50
0
0
60 70 80 90 100
200 400 600 800 1 k 12 k 14 k 16 k 18 k 2 k
t − Time − µs
t − Time − µs
Figure 26.
Figure 27.
TPS79133
TPS79133
LINE TRANSIENT RESPONSE
LOAD TRANSIENT RESPONSE ∆ V − Change In O I O − Output Current − mA Output Voltage − mV
V
I
3.8
V I − Input Voltage − V
VI = 2.8 V Co = 10 µF
20
20 0 −20
5.3 4.3 IO = 100 mA Co = 1 µF C(byp) = 0.01 µF 0
5
10
15 20
dv 0.4 V + µs dt 25
30
35 40
45 50
t − Time − µs
VI = 4.3 V Co = 10 µF
20 0 −20 −40 100
0
0
50 100 150 200 250 300 350 400 450 500 t − Time − µs
TPS79118
TPS79118
TYPICAL REGIONS OF STABILITY EQUIVALENT SERIES RESISTANCE (ESR) vs OUTPUT CURRENT
TYPICAL REGIONS OF STABILITY EQUIVALENT SERIES RESISTANCE (ESR) vs OUTPUT CURRENT
10 Region of Instability
1
0.1 Region of Instability 0.01 0.02
0.04
0.06
0.08
0.1
IO − Output Current − A
Figure 30.
Submit Documentation Feedback
100
Ω
Co = 0.47 µF VI = 5.5 V TJ = −40 °C to 125°C
Co = 1 µF VI = 5.5 V TJ = −40 °C to 125°C
ESR − Equivalent Series Resistance −
100
Ω
TPS79118
TYPICAL REGIONS OF STABILITY EQUIVALENT SERIES RESISTANCE (ESR) vs OUTPUT CURRENT
0
10
Figure 29.
ESR − Equivalent Series Resistance −
ESR − Equivalent Series Resistance −
Ω
Figure 28.
10 Region of Instability
1
0.1 Region of Stability 0.01 0
0.02
0.04
0.06
0.08
IO − Output Current − A
0.1
100
Co = 10 µF VI = 5.5 V TJ = −40 °C to 125°C
10 Region of Instability
1
0.1 Region of Stability
0.01 0
0.02
0.04
0.06
0.08
0.1
IO − Output Current − A
Figure 31.
Figure 32.
Copyright © 2003–2008, Texas Instruments Incorporated
Product Folder Link(s): TPS79101-EP TPS79118-EP TPS79133-EP TPS79147-EP
TPS79101-EP, TPS79118-EP TPS79133-EP, TPS79147-EP www.ti.com ............................................................................................................................................................ SGLS161A – APRIL 2003 – REVISED JUNE 2008
APPLICATION INFORMATION The TPS791xx family of low-dropout (LDO) regulators have been optimized for use in noise-sensitive battery-operated equipment. The device features extremely low dropout voltages, high PSRR, ultralow output noise, low quiescent current (170 µA typically), and enable-input to reduce supply currents to less than 1 µA when the regulator is turned off. A typical application circuit is shown in Figure 33. TPS791xx 1
VI
IN
BYPASS
OUT 0.1 µF
4 5
VO
3
0.01 µF
EN + GND
1 µF
2
Figure 33. Typical Application Circuit
External Capacitor Requirements A 0.1-µF or larger ceramic input bypass capacitor, connected between IN and GND and located close to the TPS791xx, is required for stability and to improve transient response, noise rejection, and ripple rejection. A higher-value electrolytic input capacitor may be necessary if large, fast-rise-time load transients are anticipated and the device is located several inches from the power source. Like all low dropout regulators, the TPS791xx requires an output capacitor connected between OUT and GND to stabilize the internal control loop. The minimum recommended capacitance is 1 µF. Any 1-µF or larger ceramic capacitor is suitable. The device is also stable with a 0.47-µF ceramic capacitor with at least 75 mΩ of ESR. The internal voltage reference is a key source of noise in an LDO regulator. The TPS791xx has a BYPASS pin which is connected to the voltage reference through a 250-kΩ internal resistor. The 250-kΩ internal resistor, in conjunction with an external bypass capacitor connected to the BYPASS pin, creates a low pass filter to reduce the voltage reference noise and, therefore, the noise at the regulator output. In order for the regulator to operate properly, the current flow out of the BYPASS pin must be at a minimum because any leakage current creates an IR drop across the internal resistor thus creating an output error. Therefore, the bypass capacitor must have minimal leakage current. For example, the TPS79118 exhibits approximately 15 µVRMS of output voltage noise using a 0.1-µF ceramic bypass capacitor and a 1-µF ceramic output capacitor. Note that the output starts up slower as the bypass capacitance increases due to the RC time constant at the bypass pin that is created by the internal 250 kΩ resistor and external capacitor.
Board Layout Recommendation To Improve PSRR And Noise Performance To improve ac measurements like PSRR, output noise, and transient response, it is recommended that the board be designed with separate ground planes for VIN and VOUT, with each ground plane connected only at the ground pin of the device. In addition, the ground connection for the bypass capacitor should connect directly to the ground pin of the device.
Copyright © 2003–2008, Texas Instruments Incorporated
Submit Documentation Feedback
Product Folder Link(s): TPS79101-EP TPS79118-EP TPS79133-EP TPS79147-EP
11
TPS79101-EP, TPS79118-EP TPS79133-EP, TPS79147-EP SGLS161A – APRIL 2003 – REVISED JUNE 2008 ............................................................................................................................................................ www.ti.com
Power Dissipation and Junction Temperature Specified regulator operation is assured to a junction temperature of 125°C; the maximum junction temperature should be restricted to 125°C under normal operating conditions. This restriction limits the power dissipation the regulator can handle in any given application. To ensure the junction temperature is within acceptable limits, calculate the maximum allowable dissipation, PD(max), and the actual dissipation, PD, which must be less than or equal to PD(max). The maximum power-dissipation limit is determined using the following equation: T max * T A P + J D(max) R qJA
(1)
Where: TJmax is the maximum allowable junction temperature. RθJA is the junction-to-ambient thermal resistance for the package (see the dissipation rating table). TA is the ambient temperature. The regulator dissipation is calculated using: P
D
ǒ
+ V *V I O
Ǔ
I
O
(2)
Power dissipation resulting from quiescent current is negligible. Excessive power dissipation triggers the thermal protection circuit.
Programming the TPS79101 Adjustable LDO Regulator The output voltage of the TPS79101 adjustable regulator is programmed using an external resistor divider as shown in Figure 34. The output voltage is calculated using:
V
O
+V
ref
ǒ1 ) R1 Ǔ R2
(3)
Where: Vref = 1.2246 V typ (the internal reference voltage) Resistors R1 and R2 should be chosen for approximately 50-µA divider current. Lower value resistors can be used for improved noise performance, but the solution consumes more power. Higher resistor values should be avoided as leakage current into/out of FB across R1/R2 creates an offset voltage that artificially increases/decreases the feedback voltage and thus erroneously decreases/increases VO. The recommended design procedure is to choose R2 = 30.1 kΩ to set the divider current at 50 µA, C1 = 15 pF for stability, and then calculate R1 using: R1 +
ǒ
V
V
Ǔ
O *1 ref
R2 (4)
In order to improve the stability of the adjustable version, it is suggested that a small compensation capacitor be placed between OUT and FB. For voltages <1.8 V, the value of this capacitor should be 100 pF. For voltages > 1.8 V, the approximate value of this capacitor can be calculated as: (3 10*7) (R1 ) R2) C1 + (R1 R2) (5) The suggested value of this capacitor for several resistor ratios is shown in the table below. If this capacitor is not used (such as in a unity-gain configuration) or if an output voltage < 1.8 V is chosen, then the minimum recommended output capacitor is 2.2 µF instead of 1 µF.
12
Submit Documentation Feedback
Copyright © 2003–2008, Texas Instruments Incorporated
Product Folder Link(s): TPS79101-EP TPS79118-EP TPS79133-EP TPS79147-EP
TPS79101-EP, TPS79118-EP TPS79133-EP, TPS79147-EP www.ti.com ............................................................................................................................................................ SGLS161A – APRIL 2003 – REVISED JUNE 2008
TPS79101 VI
OUTPUT VOLTAGE PROGRAMMING GUIDE
IN 1 µF EN
≥2V
OUT
VO
C1 R1
≤ 0.7 V
BYPASS FB GND
0.01 µF
1 µF
OUTPUT VOLTAGE
R1
R2
C1
2.5 V
31.6 kΩ 30.1 kΩ
22 pF
3.3 V
51 kΩ 30.1 kΩ
15 pF
3.6 V
59 kΩ 30.1 kΩ
15 pF
R2
Figure 34. TPS79101 Adjustable LDO Regulator Programming
Regulator Protection The TPS791xx PMOS-pass transistor has a built-in back diode that conducts reverse current when the input voltage drops below the output voltage (e.g., during power down). Current is conducted from the output to the input and is not internally limited. If extended reverse voltage operation is anticipated, external limiting might be appropriate. The TPS791xx features internal current limiting and thermal protection. During normal operation, the TPS791xx limits output current to approximately 400 mA. When current limiting engages, the output voltage scales back linearly until the overcurrent condition ends. While current limiting is designed to prevent gross device failure, care should be taken not to exceed the power dissipation ratings of the package or the absolute maximum voltage ratings of the device. If the temperature of the device exceeds approximately 165°C, thermal-protection circuitry shuts it down. Once the device has cooled down to below approximately 140°C, regulator operation resumes.
Copyright © 2003–2008, Texas Instruments Incorporated
Submit Documentation Feedback
Product Folder Link(s): TPS79101-EP TPS79118-EP TPS79133-EP TPS79147-EP
13
PACKAGE OPTION ADDENDUM
www.ti.com
17-Dec-2015
PACKAGING INFORMATION Orderable Device
Status (1)
Package Type Package Pins Package Drawing Qty
Eco Plan
Lead/Ball Finish
MSL Peak Temp
(2)
(6)
(3)
Op Temp (°C)
Device Marking (4/5)
TPS79101DBVR
ACTIVE
SOT-23
DBV
6
3000
Green (RoHS & no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
-40 to 125
PEUI
TPS79101DBVREP
ACTIVE
SOT-23
DBV
6
3000
Green (RoHS & no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
-40 to 125
PEUE
TPS79101DBVRG4
ACTIVE
SOT-23
DBV
6
3000
Green (RoHS & no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
-40 to 125
PEUI
TPS79101DBVT
ACTIVE
SOT-23
DBV
6
250
Green (RoHS & no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
-40 to 125
PEUI
TPS79101DBVTG4
ACTIVE
SOT-23
DBV
6
250
Green (RoHS & no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
-40 to 125
PEUI
TPS79118DBVR
ACTIVE
SOT-23
DBV
5
3000
Green (RoHS & no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
-40 to 125
PERI
TPS79118DBVRG4
ACTIVE
SOT-23
DBV
5
3000
Green (RoHS & no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
-40 to 125
PERI
TPS79118DBVT
ACTIVE
SOT-23
DBV
5
250
Green (RoHS & no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
-40 to 125
PERI
TPS79118DBVTG4
ACTIVE
SOT-23
DBV
5
250
Green (RoHS & no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
-40 to 125
PERI
TPS79133DBVR
ACTIVE
SOT-23
DBV
5
3000
Green (RoHS & no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
-40 to 125
PESI
TPS79133DBVREP
ACTIVE
SOT-23
DBV
5
3000
Green (RoHS & no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
-40 to 125
PESE
TPS79133DBVRG4
ACTIVE
SOT-23
DBV
5
3000
Green (RoHS & no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
-40 to 125
PESI
TPS79133DBVT
ACTIVE
SOT-23
DBV
5
250
Green (RoHS & no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
-40 to 125
PESI
TPS79133DBVTG4
ACTIVE
SOT-23
DBV
5
250
Green (RoHS & no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
-40 to 125
PESI
TPS79133MDBVTEP
ACTIVE
SOT-23
DBV
5
250
Green (RoHS & no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
-55 to 125
PIDM
TPS79147DBVR
ACTIVE
SOT-23
DBV
5
3000
Green (RoHS & no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
-40 to 125
PETI
TPS79147DBVREP
ACTIVE
SOT-23
DBV
5
3000
Green (RoHS & no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
-40 to 125
PETE
Addendum-Page 1
Samples
PACKAGE OPTION ADDENDUM
www.ti.com
Orderable Device
17-Dec-2015
Status (1)
Package Type Package Pins Package Drawing Qty
Eco Plan
Lead/Ball Finish
MSL Peak Temp
(2)
(6)
(3)
Op Temp (°C)
Device Marking (4/5)
TPS79147DBVT
ACTIVE
SOT-23
DBV
5
250
Green (RoHS & no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
-40 to 125
PETI
TPS79147DBVTG4
ACTIVE
SOT-23
DBV
5
250
Green (RoHS & no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
-40 to 125
PETI
V62/03644-01YE
ACTIVE
SOT-23
DBV
6
3000
Green (RoHS & no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
-40 to 125
PEUE
V62/03644-03XE
ACTIVE
SOT-23
DBV
5
3000
Green (RoHS & no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
-40 to 125
PESE
V62/03644-04XE
ACTIVE
SOT-23
DBV
5
3000
Green (RoHS & no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
-40 to 125
PETE
V62/03644-05XE
ACTIVE
SOT-23
DBV
5
250
Green (RoHS & no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
-55 to 125
PIDM
(1)
The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2)
Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability information and additional product content details. TBD: The Pb-Free/Green conversion plan has not been defined. Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes. Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above. Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material) (3)
MSL, Peak Temp. - The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.
(4)
There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device.
(5)
Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation of the previous line and the two combined represent the entire Device Marking for that device.
Addendum-Page 2
Samples
PACKAGE OPTION ADDENDUM
www.ti.com
17-Dec-2015
(6)
Lead/Ball Finish - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line. Lead/Ball Finish values may wrap to two lines if the finish value exceeds the maximum column width. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release. In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis. OTHER QUALIFIED VERSIONS OF TPS79101-EP, TPS79118-EP, TPS79133-EP, TPS79147-EP :
• Automotive: TPS79101-Q1, TPS79118-Q1, TPS79133-Q1, TPS79147-Q1 NOTE: Qualified Version Definitions:
• Automotive - Q100 devices qualified for high-reliability automotive applications targeting zero defects
Addendum-Page 3
PACKAGE MATERIALS INFORMATION www.ti.com
3-Dec-2015
TAPE AND REEL INFORMATION
*All dimensions are nominal
Device
Package Package Pins Type Drawing
SPQ
Reel Reel A0 Diameter Width (mm) (mm) W1 (mm)
B0 (mm)
K0 (mm)
P1 (mm)
TPS79101DBVR
SOT-23
DBV
6
3000
178.0
9.0
3.23
TPS79101DBVREP
SOT-23
DBV
6
3000
180.0
9.0
3.15
TPS79101DBVT
SOT-23
DBV
6
250
178.0
9.0
3.23
TPS79118DBVR
SOT-23
DBV
5
3000
178.0
9.0
3.23
TPS79118DBVT
SOT-23
DBV
5
250
178.0
9.0
TPS79133DBVR
SOT-23
DBV
5
3000
178.0
TPS79133DBVT
SOT-23
DBV
5
250
178.0
TPS79147DBVR
SOT-23
DBV
5
3000
TPS79147DBVREP
SOT-23
DBV
5
TPS79147DBVT
SOT-23
DBV
5
3.17
1.37
4.0
8.0
Q3
3.2
1.4
4.0
8.0
Q3
3.17
1.37
4.0
8.0
Q3
3.17
1.37
4.0
8.0
Q3
3.23
3.17
1.37
4.0
8.0
Q3
9.0
3.23
3.17
1.37
4.0
8.0
Q3
9.0
3.23
3.17
1.37
4.0
8.0
Q3
178.0
9.0
3.3
3.2
1.4
4.0
8.0
Q3
3000
180.0
9.0
3.15
3.2
1.4
4.0
8.0
Q3
250
178.0
9.0
3.23
3.17
1.37
4.0
8.0
Q3
Pack Materials-Page 1
W Pin1 (mm) Quadrant
PACKAGE MATERIALS INFORMATION www.ti.com
3-Dec-2015
*All dimensions are nominal
Device
Package Type
Package Drawing
Pins
SPQ
Length (mm)
Width (mm)
Height (mm)
TPS79101DBVR
SOT-23
DBV
6
3000
180.0
180.0
18.0
TPS79101DBVREP
SOT-23
DBV
6
3000
182.0
182.0
20.0
TPS79101DBVT
SOT-23
DBV
6
250
180.0
180.0
18.0
TPS79118DBVR
SOT-23
DBV
5
3000
180.0
180.0
18.0
TPS79118DBVT
SOT-23
DBV
5
250
180.0
180.0
18.0
TPS79133DBVR
SOT-23
DBV
5
3000
180.0
180.0
18.0
TPS79133DBVT
SOT-23
DBV
5
250
180.0
180.0
18.0
TPS79147DBVR
SOT-23
DBV
5
3000
180.0
180.0
18.0
TPS79147DBVREP
SOT-23
DBV
5
3000
182.0
182.0
20.0
TPS79147DBVT
SOT-23
DBV
5
250
180.0
180.0
18.0
Pack Materials-Page 2
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