Transcript
R1 1 1 4 x SERI ES LOW NOISE 150mA LDO REGULATOR NO.EA-094-111026
OUTLINE The R1114x Series are CMOS-based voltage regulator ICs with high output voltage accuracy, low supply current, low ON-resistance, and high ripple rejection. Each of these ICs consists of a voltage reference unit, an error amplifier, resistor-net for voltage setting, a current limit circuit, and a chip enable circuit. These ICs perform with low dropout voltage and a chip enable function. The line transient response and load transient response of the R1114x Series are excellent, thus these ICs are very suitable for the power supply for hand-held communication equipment. The output voltage of these ICs is fixed with high accuracy. Since the packages for these ICs are SOT-23-5, SC-82AB, and SON1612-6 therefore high density mounting of the ICs on boards is possible.
FEATURES • • • • • • • • • • •
Supply Current ..................................................................... Typ. 75μA Standby Mode ...................................................................... Typ. 0.1μA Dropout Voltage ................................................................... Typ. 0.22V (IOUT=150mA 3.0V Output type) Ripple Rejection................................................................... Typ. 70dB (f=1kHz 3.0V Output type) Typ. 60dB (f=10kHz) Temperature-Drift Coefficient of Output Voltage .................. Typ. ±100ppm/°C Line Regulation .................................................................... Typ. 0.02%/V Output Voltage Range.......................................................... 1.5V to 4.0V (0.1V steps) (For other voltages, please refer to MARK INFORMATIONS.) Output Voltage Accuracy...................................................... ±2.0% Packages ............................................................................ SON1612-6, SC-82AB, SOT-23-5 Built-in Fold Back Protection Circuit .................................... Typ. 40mA (Current at short mode) Ceramic capacitors are recommended to be used with this IC ... CIN=COUT=1μF (VOUT<2.5V) CIN=1μF, COUT=0.47μF (VOUT > = 2.5V)
APPLICATIONS • Power source for portable communication equipment. • Power source for electrical appliances such as cameras, VCRs and camcorders. • Power source for battery-powered equipment.
1
R1114x
BLOCK DIAGRAMS R1114xxx1A 1
R1114xxx1B 5
VOUT
VDD VOUT
VDD
+ Vref
Vref Current Limit
CE 3
CE
R1114xxx1D VOUT
VDD + Vref Current Limit CE
2
Current Limit
GND 2
GND
GND
R1114x
SELECTION GUIDE The output voltage, auto discharge function, package, and the taping type, etc. for the ICs can be selected at the user’s request. Product Name
Package
Quantity per Reel
Pb Free
Halogen Free
R1114Dxx1∗-TR-FE
SON1612-6
4,000 pcs
Yes
Yes
R1114Qxx1∗-TR-FE
SC-82AB
3,000 pcs
Yes
Yes
R1114Nxx1∗-TR-FE
SOT-23-5
3,000 pcs
Yes
Yes
xx : The output voltage can be designated in the range from 1.5V(15) to 4.0V(40) in 0.1V steps. (For other voltages, please refer to MARK INFORMATIONS.) ∗ : CE pin polarity and auto discharge function at off state are options as follows. (A) "L" active, without auto discharge function at off state (B) "H" active, without auto discharge function at off state (D) "H" active, with auto discharge function at off state
3
R1114x
PIN CONFIGURATION SON1612-6 6
5
SC-82AB
4
4
SOT-23-5
3
5
(mark side)
1
2
1
3
(mark side)
2
1
PIN DESCRIPTIONS •
•
•
4
R1114D Pin No.
Symbol
1
VDD
2
GND
Ground Pin
3
VOUT
Output pin
4
NC
No Connection
5
GND
6
CE or CE
Description Input Pin
Ground Pin Chip Enable Pin
R1114Q Pin No.
Symbol
1
CE or CE
2
GND
Ground Pin
3
VOUT
Output pin
4
VDD
Input Pin
Description Chip Enable Pin
R1114N Pin No.
Symbol
1
VDD
Description
2
GND
3
CE or CE
Chip Enable Pin
4
NC
No Connection
5
VOUT
Output pin
Input Pin Ground Pin
4
2
3
R1114x
ABSOLUTE MAXIMUM RATINGS Symbol
Item
Rating
Unit
VIN
Input Voltage
6.5
V
VCE
Input Voltage ( CE or CE Pin)
6.5
V
VOUT
Output Voltage
−0.3~VIN+0.3
V
IOUT
Output Current
200
mA
Power Dissipation (SON1612-6) PD
Power Dissipation (SC-82AB)
∗
∗
Power Dissipation (SOT-23-5)
∗
500 380
mW
420
Topt
Operating Temperature Range
−40~85
°C
Tstg
Storage Temperature Range
−55~125
°C
∗) For Power Dissipation, please refer to PACKAGE INFORMATION. ABSOLUTE MAXIMUM RATINGS Electronic and mechanical stress momentarily exceeded absolute maximum ratings may cause the permanent damages and may degrade the life time and safety for both device and system using the device in the field. The functional operation at or over these absolute maximum ratings is not assured.
RECOMMENDED OPERATING CONDITIONS (ELECTRICAL CHARACTERISTICS) All of electronic equipment should be designed that the mounted semiconductor devices operate within the recommended operating conditions. The semiconductor devices cannot operate normally over the recommended operating conditions, even if when they are used over such conditions by momentary electronic noise or surge. And the semiconductor devices may receive serious damage when they continue to operate over the recommended operating conditions.
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R1114x
ELECTRICAL CHARACTERISTICS •
R1114xxx1A Topt=25°C
Symbol
Conditions
VOUT
Output Voltage
VIN = Set VOUT+1V 1mA < = IOUT < = 30mA
IOUT
Output Current
VIN−VOUT = 1.0V
VDIF
Dropout Voltage
ISS
Supply Current
VIN = Set VOUT+1V, IOUT = 0mA
Istandby
Supply Current (Standby)
ΔVOUT/ΔVIN
Line Regulation
VIN = Set VOUT+1V VCE = VDD VOUT > 1.7V, Set VOUT+0.5V < = VIN < = 6.0V < (VOUT = 1.7V, 2.2V ≤ VIN < = 6.0V) IOUT = 30mA
Ripple Rejection
VIN
Input Voltage
×0.980
f=1kHz f=10kHz Ripple 0.5Vp−p VOUT > 1.7V, VIN−VOUT = 1.0V VOUT < = 1.7, VIN−VOUT = 1.2V IOUT = 30mA
×1.020
Unit V mA
75
95
μA
0.1
1.0
μA
0.02
0.10
%/V
dB
2.0 IOUT = 30mA −40°C < = Topt
ISC
Short Current Limit
VOUT = 0V
RPU
CE Pull-up Resistance
0.7
VCEH
CE Input Voltage “H”
VCEL
CE Input Voltage “L”
Output Noise
Max.
70 60
Output Voltage Temperature Coefficient
en
Typ.
VIN = Set VOUT+1V 22 40 mV 1mA < = IOUT < = 150mA Refer to the ELECTRICAL CHARACTERISTICS by OUTPUT VOLTAGE
Load Regulation
RR
Min.
150
ΔVOUT/ΔIOUT
ΔVOUT/ ΔTopt
6
Item
< =
85°C
BW = 10Hz to 100kHz
6.0
V
±100
ppm /°C
40
mA
2.0
8.0
MΩ
1.5
6.0
V
0.0
0.3
V
30
μVrms
R1114x
•
R1114xxx1B/D Topt=25°C
Symbol
Item
Conditions
VOUT
Output Voltage
VIN = Set VOUT+1V 1mA < = IOUT < = 30mA
IOUT
Output Current
VIN−VOUT = 1.0V
ΔVOUT/ΔIOUT
Load Regulation
VDIF
Dropout Voltage
ISS
Supply Current
Istandby
ΔVOUT/ΔVIN
Supply Current (Standby)
Line Regulation
RR
Ripple Rejection
VIN
Input Voltage
ΔVOUT/ ΔTopt
Min. ×0.980
Unit
×1.020
V mA
VIN = Set VOUT+1V 22 40 mV 1mA < = IOUT < = 150mA Refer to the ELECTRICAL CHARACTERISTICS by OUTPUT VOLTAGE VIN = Set VOUT+1V, IOUT = 0mA VIN = Set VOUT+1V VCE = GND VOUT > 1.7V, Set VOUT+0.5V < = VIN < = 6.0V 1.7V, 2.2V ≤ (VOUT < = VIN < = 6.0V) IOUT = 30mA f=1kHz f=10kHz Ripple 0.5Vp−p VOUT > 1.7V, VIN−VOUT = 1.0V VOUT < = 1.7, VIN−VOUT = 1.2V IOUT = 30mA
75
95
μA
0.1
1.0
μA
0.02
0.10
%/V
70 60 dB
2.0 IOUT = 30mA −40°C < = Topt
ISC
Short Current Limit
VOUT = 0V
RPD
CE Pull-down Resistance
0.7
VCEH
CE Input Voltage “H”
VCEL
CE Input Voltage “L”
RLOW
Max.
150
Output Voltage Temperature Coefficient
en
Typ.
< =
85°C
6.0
V
±100
ppm /°C
40
mA
2.0
8.0
MΩ
1.5
6.0
V
0.0
0.3
V
Output Noise
BW = 10Hz to 100kHz
30
μVrms
On Resistance of Nch for auto-discharge (Only for D version)
VCE = 0V
60
Ω
7
R1114x
•
ELECTRICAL CHARACTERISTICS by OUTPUT VOLTAGE Topt = 25°C
Dropout Voltage Output Voltage VOUT (V)
VDIF (V) Condition
Typ.
Max.
VOUT = 1.5
0.38
0.70
VOUT = 1.6
0.36
0.65
0.34
0.60
0.32
0.55
VOUT = 1.7
IOUT = 150mA
1.8
< =
VOUT
< =
2.0
2.1
< =
VOUT
< =
2.7
0.28
0.50
2.8
< =
VOUT
< =
4.0
0.22
0.35
TECHNICAL NOTES When using these ICs, consider the following points: Phase Compensation In these ICs, phase compensation is made for securing stable operation even if the load current is varied. For this purpose, use a capacitor COUT with good frequency characteristics and ESR (Equivalent Series Resistance). (Note: If additional ceramic capacitors are connected with parallel to the output pin with an output capacitor for phase compensation, the operation might be unstable. Because of this, test these ICs with as same external components as ones to be used on the PCB.) PCB Layout Make VDD and GND lines sufficient. If their impedance is high, noise pickup or unstable operation may result. Connect a capacitor with a capacitance value as much as 1.0μF or more between VDD and GND pin, and as close as possible to the pins. Set external components, especially the output capacitor, as close as possible to the ICs, and make wiring as short as possible.
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R1114x
TEST CIRCUITS CE
VOUT
VDD
IN
CE
R1114xxx1B/D SERIES
OUT
IN
IOUT
1.0µF
1.0µF
ISS
1.0µF
1.0µF GND
Fig.1 Standard test Circuit
Fig.2 Supply Current Test Circuit
CE
CE
VOUT
VDD R1114xxx1B/D SERIES
P.G.
OUT
R1114xxx1B/D SERIES
GND
IN
VOUT
VDD
OUT
IN
IOUT 1.0µF
1.0 F
GND
VOUT
VDD
OUT
R1114xxx1B/D SERIES 1.0µF GND I1
Fig.3 Ripple Rejection, Line Transient Response Test Circuit
I2
Fig.4 Load Transient Response Test Circuit
9
R1114x
TYPICAL APPLICATIONS CE
IN
VDD
CE
R1114Nxx1A SERIES
VOUT
OUT IN
+
+
Cap.
Cap.
GND
VDD
R1114xxx1B SERIES
VOUT
+
OUT +
Cap.
Cap.
GND
(External Components) Output Capacitor; Ceramic 0.47μF (Set Output Voltage in the range from 2.5 to 4.0V) Ceramic 1.0μF (Set Output Voltage in the range from 1.5 to 2.4V) Input Capacitor; Ceramic 1.0μF
TYPICAL CHARACTERISTICS 1) Output Voltage vs. Output Current (Topt=25°C) R1114x151x
R1114x281x 3.0
1.4 1.8V
1.2 1.0 0.8 0.6
VIN=3.5V
0.4 2.0V
0.2
2.5V
0
100
200
300
400
VIN=4.8V
2.0 1.5 3.1V
1.0 3.8V 3.5V
0.5
R1114x401x 4.5 4.0 3.5
VIN=6.0V
3.0 2.5 2.0 4.5V
1.5
4.3V
5.0V
1.0 0.5 0.0 0
100
200
300
Output Current IOUT(mA)
0
100
200
300
Output Current IOUT(mA)
Output Current IOUT(mA)
Output Voltage VOUT(V)
2.5
0.0
0.0
10
Output Voltage VOUT(V)
Output Voltage VOUT(V)
1.6
400
400
R1114x
2) Output Voltage vs. Input Voltage (Topt=25°C) R1114x281x 2.9
1.6
2.8
Output Voltage VOUT(V)
Output Voltage VOUT(V)
R1114x151x 1.7
1.5 1.4 1.3
IOUT=1mA
1.2
IOUT=30mA
1.1
IOUT=50mA
2.7 2.6 2.5 2.4
IOUT=1mA
2.3 IOUT=30mA
2.2
IOUT=50mA
2.1 2.0
1.0 1
2
3
4
5
2
6
3
Input Voltage VIN(V)
4
5
6
Input Voltage VIN(V)
R1114x401x Output Voltage VOUT(V)
4.2 IOUT=1mA
4.0
IOUT=30mA 3.8
IOUT=50mA
3.6 3.4 3.2 3.0 1
2
3
4
5
6
Input Voltage VIN(V)
3) Supply Current vs. Input Voltage (Topt=25°C) R1114x281x 90
80
80
Supply Current ISS(µA)
Supply Current ISS(µA)
R1114x151x 90
70 60 50 40 30 20 10
70 60 50 40 30 20 10
0
0
0
1
2
3
4
Input Voltage VIN(V)
5
6
0
1
2
3
4
5
6
Input Voltage VIN(V)
11
R1114x R1114x401x
Supply Current ISS(µA)
90 80 70 60 50 40 30 20 10 0 0
1
2
3
4
5
6
Input Voltage VIN(V)
4) Output Voltage vs. Temperature R1114x151x
R1114x281x 2.86
1.52
Output Voltage VOUT(V)
Output Voltage VOUT(V)
1.53
1.51 1.50 1.49 1.48 1.47 1.46 -40
-15
10
35
60
85
Temperature Topt(°C)
R1114x401x
Output Voltage VOUT(V)
4.06 4.04 4.02 4.00 3.98 3.96 3.94 -15
10
35
60
Temperature Topt(°C)
12
2.82 2.80 2.78 2.76 2.74 -40
-15
10
35
60
Temperature Topt(°C)
4.08
3.92 -40
2.84
85
85
R1114x
5) Supply Current vs. Temperature R1114x281x 90
80
80
Supply Current ISS(µA)
Supply Current ISS(µA)
R1114x151x 90
70 60 50 40 30 20 10
70 60 50 40 30 20 10
0 -40
-15
10
35
60
0 -40
85
-15
10
35
60
85
Temperature Topt(°C)
Temperature Topt(°C)
R1114x401x
Supply Current ISS(µA)
90 80 70 60 50 40 30 20 10 0 -40
-15
10
35
60
85
Temperature Topt(°C)
6) Dropout Voltage vs. Temperature R1114x151x
R1114x161x 0.6
85°C 25°C -40°C
0.5
Dropout Voltage VDIF(V)
Dropout Voltage VDIF(V)
0.6
0.4 0.3 0.2 0.1 0.0 0
25
50
75
100
125
Output Current IOUT(mA)
150
85°C 25°C -40°C
0.5 0.4 0.3 0.2 0.1 0.0 0
25
50
75
100
125
150
Output Current IOUT(mA)
13
R1114x
R1114x171x
R1114x181x 0.6
85°C 25°C -40°C
0.5
Dropout Voltage VDIF(V)
Dropout Voltage VDIF(V)
0.6
0.4 0.3 0.2 0.1
85°C 25°C -40°C
0.5 0.4 0.3 0.2 0.1 0.0
0.0 0
25
50
75
100
125
0
150
25
R1114x211x
125
150
R1114x281x
85°C 25°C -40°C
0.35 0.30
Dropout Voltage VDIF(V)
Dropout Voltage VDIF(V)
100
0.40
0.40
0.25 0.20 0.15 0.10 0.05 0.00
85°C 25°C -40°C
0.35 0.30 0.25 0.20 0.15 0.10 0.05 0.00
0
25
50
75
100
125
150
R1114x401x 0.40 85°C 25°C -40°C
0.35 0.30 0.25 0.20 0.15 0.10 0.05 0.00 0
25
50
75
100
125
Output Current IOUT(mA)
0
25
50
75
100
125
Output Current IOUT(mA)
Output Current IOUT(mA)
Dropout Voltage VDIF(V)
75
Output Current IOUT(mA)
Output Current IOUT(mA)
14
50
150
150
R1114x
7) Dropout Voltage vs. Set Output Voltage (Topt=25°C)
Dropout Voltage VDIF(V)
0.60 10mA 30mA 50mA 150mA
0.50 0.40 0.30 0.20 0.10 0.00 1.0
1.5
2.0
2.5
3.0
3.5
4.0
Set Output Voltage VREG(V)
8) Ripple Rejection vs. Input Bias Voltage (Topt=25°C, CIN=none, COUT=ceramic0.47μF) R1114x281x
Ripple Rejection RR(dB)
80 70 60 50 40 30 f=1kHz f=10kHz f=100kHz
20 10 0 2.9
3.0
3.1
3.2
80 70 60 50 40 30 10 0 2.9
3.3
f=1kHz f=10kHz f=100kHz
20
3.0
3.1
3.2
Input Voltage VIN(V)
Input Voltage VIN(V)
R1114x281x
R1114x281x
Ripple 0.2Vp-p, IOUT=30mA
90 80 70 60 50 40 30
f=1kHz f=10kHz f=100kHz
20 10 0 2.9
Ripple 0.5Vp-p, IOUT=1mA
90
3.0
3.1
3.2
Input Voltage VIN(V)
3.3
3.3
Ripple 0.5Vp-p, IOUT=30mA
90
Ripple Rejection RR(dB)
Ripple Rejection RR(dB)
90
Ripple Rejection RR(dB)
R1114x281x
Ripple 0.2Vp-p, IOUT=1mA
80 70 60 50 40 30 f=1kHz f=10kHz f=100kHz
20 10 0 2.9
3.0
3.1
3.2
3.3
Input Voltage VIN(V)
15
R1114x R1114x281x 90 80 70 60 50 40 30 f=1kHz f=10kHz f=100kHz
20 10 0 2.9
3.0
3.1
3.2
Ripple 0.5Vp-p, IOUT=50mA
90
Ripple Rejection RR(dB)
Ripple Rejection RR(dB)
R1114x281x
Ripple 0.2Vp-p, IOUT=50mA
80 70 60 50 40 30 20 10 0 2.9
3.3
f=1kHz f=10kHz f=100kHz
Input Voltage VIN(V)
3.0
3.1
3.2
3.3
Input Voltage VIN(V)
9) Ripple Rejection vs. Frequency (CIN=none) R1114x151x VIN=2.5VDC+0.5Vp-p, COUT=Ceramic 1.0µF
90 80 70 60 50 40 30 20
IOUT=1mA IOUT=30mA IOUT=50mA
10 0 0.1
1
10
VIN=2.5VDC+0.5Vp-p, COUT=Ceramic 2.2µF
90
Ripple Rejection RR(dB)
Ripple Rejection RR(dB)
R1114x151x
80 70 60 50 40 30 20 10 0 0.1
100
IOUT=1mA IOUT=30mA IOUT=50mA
Frequency f(kHz)
1
R1114x281x 90
80
80
Ripple Rejection RR(dB)
Ripple Rejection RR(dB)
90 70 60 50 40 20
IOUT=1mA IOUT=30mA IOUT=50mA
10 0 0.1
1
10
Frequency f(kHz)
16
100
R1114x281x
VIN=3.8VDC+0.5Vp-p, COUT=Ceramic 0.47µF
30
10
Frequency f(kHz)
100
VIN=3.8VDC+0.5Vp-p, COUT=Ceramic 1.0µF
70 60 50 40 30 20
IOUT=1mA IOUT=30mA IOUT=50mA
10 0 0.1
1
10
Frequency f(kHz)
100
R1114x R1114x401x
R1114x401x
90
90
80
80
Ripple Rejection RR(dB)
Ripple Rejection RR(dB)
VIN=5.0VDC+0.5Vp-p, COUT=Ceramic 0.47µF
70 60 50 40 IOUT=1mA IOUT=30mA IOUT=50mA
30 20 10 0 0.1
1
10
VIN=5.0VDC+0.5Vp-p, COUT=Ceramic 1.0µF
70 60 50 40 IOUT=1mA IOUT=30mA IOUT=50mA
30 20 10 0 0.1
100
1
Frequency f(kHz)
10
100
Frequency f(kHz)
10) Input Transient Response (IOUT=30mA, CIN=none, tr=tf=5μs, COUT=Ceramic 0.47μF) R1114x151x 4
1.54
Input Voltage
3
1.53
2
1.52
1
1.51
0 Output Voltage
1.50
Input Voltage VIN(V)
Output Voltage VOUT(V)
1.55
1.49 0
10
20
30
40
50
60
70
80
90
100
Time T(µs)
6
2.84
5 Input Voltage
2.83 2.82
4 3
2.81
2 Output Voltage
2.80
Input Voltage VIN(V)
Output Voltage VOUT(V)
R1114x281x 2.85
1
2.79 0
10
20
30
40
50
60
70
80
90
0 100
Time T(µs)
17
R1114x 11) Load Transient Response (tr=tf=0.5μs, CIN=Ceramic 1.0μF) R1114x151x
Output Voltage VOUT(V)
1.70
150 100
Output Current 1.65
50
1.60
0
1.55 Output Voltage
1.50
Output Current IOUT(mA)
VIN=2.5V, COUT=Ceramic 1.0µF
1.75
1.45 0
2
4
6
8
10
12
14
16
18
20
Time T(µs)
R1114x151x
Output Voltage VOUT(V)
1.70
150 100
Output Current 1.65
50
1.60
0
1.55 Output Voltage 1.50
Output Current IOUT(mA)
VIN=2.5V, COUT=Ceramic 2.2µF
1.75
1.45 0
2
4
6
8
10
12
14
16
18
20
Time T(µs)
R1114x281x
Output Voltage VOUT(V)
3.00
100 Output Current
2.95
50
2.90
0
2.85 Output Voltage 2.80 2.75 0
2
4
6
8
10
Time T(µs)
18
150
12
14
16
18
20
Output Current IOUT(mA)
VIN=3.8V, COUT=Ceramic 0.47µF
3.05
R1114x R1114x281x
Output Voltage VOUT(V)
3.00
150 100
Output Current 2.95
50
2.90
0
2.85 Output Voltage 2.80
Output Current IOUT(mA)
VIN=3.8V, COUT=Ceramic 1.0µF
3.05
2.75 0
2
4
6
8
10
12
14
16
18
20
Time T(µs)
R1114x281x
Output Voltage VOUT(V)
3.00
150 100
Output Current 2.95
50
2.90
0
2.85 Output Voltage 2.80
Output Current IOUT(mA)
VIN=3.8V, COUT=Ceramic 2.2µF
3.05
2.75 0
2
4
6
8
10
12
14
16
18
20
Time T(µs)
12) Turn-on/off speed with CE pin (D version)
5
2
4
VIN IOUT= 0mA IOUT= 30mA IOUT= 150mA
1 0
3 2 1 0
-5
0
5
10
15
Time T(µs)
20
25
5
3 2 1
VIN IOUT= 0mA IOUT= 30mA IOUT= 150mA
4 3 2
0
1 0 -50 0
Output Voltage VOUT(V)
3
6
4
CE Input Voltage VCE(V)
6
Output Voltage VOUT(V)
CE Input Voltage VCE(V)
R1114x151D (VIN=2.5V, CIN=Ceramic 1.0μF, COUT=Ceramic 1.0μF) 4
50 100 150 200 250 300 350 400 450
Time T(µs)
19
R1114x
8
3
7
2
6
1
5
2
VIN IOUT= 0mA IOUT= 30mA IOUT= 150mA
1 0
6 5 4 3
-1
2 1 0 -5
0
5
10
15
20
25
4
0 -1
VIN IOUT= 0mA IOUT= 30mA IOUT= 150mA
3 2 1 0
-20 0
Time T(µs)
Output Voltage VOUT(V)
4
7
CE Input Voltage VCE(V)
8
3
Output Voltage VOUT(V)
CE Input Voltage VCE(V)
R1114x281D (VIN=3.8V, CIN=Ceramic 0.47μF, COUT=Ceramic 0.47μF) 4
20 40 60 80 100 120 140 160 180
Time T(µs)
8
6
12
6
4
10
VIN IOUT= 0mA IOUT= 30mA IOUT= 150mA
2 0
8 6
-2
4 2 0
4 2
0
5
10
15
Time T(µs)
20
20
25
VIN IOUT= 0mA IOUT= 30mA IOUT= 150mA
12 10 8
0
6
-2
4 2 0
-2 -5
14
-20 0
-2 20 40 60 80 100 120 140 160 180
Time T(µs)
Output Voltage VOUT(V)
14
CE Input Voltage VCE(V)
8
Output Voltage VOUT(V)
CE Input Voltage VCE(V)
R1114x401D (VIN=5.0V, CIN=Ceramic 0.47μF, COUT=Ceramic 0.47μF)
R1114x
ESR vs. Output Current When using these ICs, consider the following points: In these ICs, phase compensation is made for securing stable operation even if the load current is varied. For this purpose, use a capacitor COUT with good frequency characteristics and ESR (Equivalent Series Resistance) of which is in the range described as follows:
VOUT
CE
Ceramic Cap.
R1114xxx1B/D
Spectrum Analyzer
S.A.
VIN Ceramic Cap.
VIN
GND
ESR IOUT
Measuring Circuit for white noise; R1114xxx1B/D The relations between IOUT (Output Current) and ESR of an output capacitor are shown below. The conditions when the white noise level is under 40μV (Avg.) are marked as the hatched area in the graph. (Note: If additional ceramic capacitors are connected to the Output Pin with Output capacitor for phase compensation, the operation might be unstable. Because of this, test these ICs with as same external components as ones to be used on the PCB.) (1) VIN=VOUT+1V (2) Frequency Band: 10Hz to 2MHz (3) Temperature: −40°C to 25°C R1114x151x
R1114x161x
CIN=Ceramic 1.0µF, COUT=Ceramic 1.0µF
100
100
10
ESR (Ω)
ESR (Ω)
10
1
0.1
0.01 0
CIN=Ceramic 0.47µF, COUT=Ceramic 0.68µF
1
0.1
30
60
90
120
Load Current IOUT (mA)
150
0.01 0
30
60
90
120
150
Load Current IOUT (mA)
21
R1114x R1114x211x
R1114x281x
CIN=Ceramic 0.47µF, COUT=Ceramic 0.47µF
100
100
10
ESR (Ω)
ESR (Ω)
10
1
0.1
0.01 0
1
0.1
30
60
90
120
Load Current IOUT (mA)
22
CIN=Ceramic 0.47µF, COUT=Ceramic 0.47µF
150
0.01 0
30
60
90
120
Load Current IOUT (mA)
150
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Ricoh completed the organization of the Lead-free production for all of our products. After Apr. 1, 2006, we will ship out the lead free products only. Thus, all products that will be shipped from now on comply with RoHS Directive.
