Transcript
NJM2861/62 LOW DROPOUT VOLTAGE REGULATOR ! GENERAL DESCRIPTION The NJM2861/62 is a low dropout voltage regulator. Advanced Bipolar technology achieves low noise, high ripple rejection and low quiescent current.
! PACKAGE OUTLINE
NJM2861F/62F
! FEATURES " High Ripple Rejection 70dB typ. (f=1kHz,Vo=3V Version) " Output Noise Voltage Vno=30µVrms typ.(Cp=0.01µF) " Output capacitor with 1.0uF ceramic capacitor (Vo≥2.7V) " Output Current Io(max.)=100mA " High Precision Output Vo±1% " Low Dropout Voltage 0.10V typ. (Io=60mA) " ON/OFF Control (Active High) " Internal Short Circuit Current Limit " Internal Thermal Overload Protection " Bipolar Technology " Package Outline SOT-23-5 ! PIN CONFIGURATION 5
4
1. CONTROL (Active High) 2. GND 3. NOISE BYPASS 4. VOUT 5. VIN 1 2 3 NJM2861F
5
4
1.VIN 2.GND 3.CONTROL (Active High) 4.NOISE BYPASS 1 2 3 5.VOUT NJM2862F
! EQUIVALENT CIRCUIT VOUT
VIN Cont
Thermal Protection Bandgap Reference
Noise Bypass
GND
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NJM2861/62 ! OUTPUT VOLTAGE RANK LIST Device Name VOUT Device Name 2.1V NJM286×F21 NJM286×F285 2.5V NJM286×F25 NJM286×F03 2.6V NJM286×F26 NJM286×F31 2.7V NJM286×F27 NJM286×F33 2.8V NJM286×F28 NJM286×F35
VOUT 2.85V 3.0V 3.1V 3.3V 3.5V
Device Name NJM286×F38 NJM286×F04 NJM286×F46 NJM286×F47 NJM286×F05
VOUT 3.8V 4.0V 4.6V 4.7V 5.0V
! ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL Input Voltage VIN Control Voltage VCONT
(Ta=25°C) RATINGS UNIT +14 V +14(*1) V 350(*2) Power Dissipation PD SOT-23-5 mW 200(*3) Operating Temperature Topr −40 ∼ +85 °C Storage Temperature Tstg −40 ∼ +125 °C (*1):When input voltage is less than +14V, the absolute maximum control voltage is equal to the input voltage. (*2): Mounted on glass epoxy board based on EIA/JEDEC. (114.3x76.2x1.6mm: 2Layers) (*3): Device itself ! ELECTRICAL CHARACTERISTICS (VIN=Vo+1V, CIN=0.1µF, Co=1.0µF: Vo≥2.7V (Co=2.2µF: Vo≤2.6V), Cp=0.01µF, Ta=25°C) PARAMETER Output Voltage
SYMBOL Vo
Io=30mA
Quiescent Current Quiescent Current at Control OFF Output Current Line Regulation Load Regulation
IQ
Io=0mA, expect Icont
−
− 120
IQ(OFF)
VCONT=0V
−
Io
Dropout Voltage
∆VI−O
Ripple Rejection
RR
Vo−0.3V VIN=Vo+1V ∼ Vo+6V, Io=30mA Io=0 ∼ 60mA Io=60mA ein=200mVrms,f=1kHz, Io=10mA VIN=Vo+1V, Vo=3V Version
Average Temperature Coefficient of Output Voltage
∆Vo/∆Ta
Output Noise Voltage
VNO
Control Voltage for ON-state Control Voltage for OFF-state
VCONT(ON) VCONT(OFF)
∆Vo/∆VIN ∆Vo/∆Io
TEST CONDITION
MIN. -1%
MAX. +1%
UNIT V
180
µA
−
100
nA
100
130
− −
0.10 0.03
mA %/V %/mA
−
− − 0.10
0.18
V
−
70
−
dB
Ta=0∼85°C, Io=10mA
−
±50
−
ppm/°C
f=10Hz∼80kHz, Io=10mA, Vo=3V Version
−
30
−
µVrms
1.6
− −
− 0.6
V V
−
TYP.
The above specification is a common specification for all output voltages. Therefore, it may be different from the individual specification for a specific output voltage.
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NJM2861/62 ! TEST CIRCUIT
A
IIN VIN
VIN 0.1µF
A V
VOUT
NJM2861/62
ICONT CONTROL
VCONT
*4
1.0µF (ceramic IOUT
V
VOUT
NOISE BYPASS
GND Cp=0.01µF
*4 Vo≤2.6V version: Co=2.2µF(ceramic)
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NJM2861/62 ! TYPICAL APPLICATION # In case that ON/OFF Control is not required: VIN
VIN
VOUT
VOUT 1.0µF
0.1µF
*5
NJM2861/62
R (0~300kΩ) CONTROL
NOISE BYPASS Cp=0.01µF
GND
*5 Vo≤2.6V version: Co=2.2µF
Connect control terminal to VIN terminal $ In use of ON/OFF CONTROL: VIN
VIN
VOUT
VOUT 1.0µF
*5
NJM2861/62
0.1µF R
CONTROL NOISE BYPASS GND
Cp=0.01µF
*5 Vo≤2.6V version: Co=2.2µF
State of control terminal: •“H”→ output is enabled. • “L” or “open” → output is disabled. %Noise bypass Capacitance Cp Noise bypass capacitance Cp reduces noise generated by band-gap reference circuit. Noise level and ripple rejection will be improved when larger Cp is used. Use of smaller Cp value may cause oscillation. Use the Cp value of 0.01µF greater to avoid the problem. %In the case of using a resistance "R" between VIN and control. The current flow into the control terminal while the IC is ON state (ICONT) can be reduced when a pull up resistance "R" is inserted between VIN and the control terminal. The minimum control voltage for ON state (VCONT (ON)) is increased due to the voltage drop caused by ICONT and the resistance "R". The ICONT is temperature dependence as shown in the "Control Current vs. Temperature" characteristics. Therefore, the resistance "R" should be carefully selected to ensure the control voltage exceeds the VCONT (ON) over the required temperature range.
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NJM2861/62 ! POWER DISSIPATION vs. AMBIENT TEMPERATURE NJM2861/62F Power Dissipation (Topr=-40!+85",Tj=125",PD=200mW(Ta#25")) Power Dissipation PD(mW)
500
On Board(114.3×76.2×1.6mm, FR-4)
400
300 Device itself 200
100
0 -50
-25
0
25
50
75
100
Ambient Temperature Ta(")
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NJM2861/62 ! ELECTRICAL CHARACTERISTICS NJM2861/62_3.0V Output Voltage vs. Input Voltage
3.2
NJM2861/62_3.0V Output Voltage vs. Output Current
4
o
@:Ta=25 C Co=1µF(Ceramic) Cp=0.01uF
3.5
3.1
Output Voltage : Vo(V)
Output Voltage : Vo (V)
3 Io=0A 3
2.9 Io=30mA
2.5
2
1.5
1 2.8
o
Io=80mA
2.7 2.7
@:Ta=25 C V IN=4V Co=1µF(Ceramic) Cp=0.01mF
0.5
0 2.8
2.9
3
3.1
3.2
3.3
3.4
0
50
NJM2861/62_3.0V Ground Pin Current vs. Output Current 20
150
200
NJM2861/62_3.0V Dropout Voltage vs. Output Current
0.3
o
@:Ta=25 C VIN=4V Co=1µF(Ceramic) Cp=0.01mF
o
@:Ta=25 C Co=1µF(Ceramic) Cp=0.01mF
0.25
15
Dropout Voltage : dVI-O (V)
Ground Pin Current : IGND (mA)
100
Output Current : Io(mA)
Input Voltage : V IN(V)
10
5
0.2
0.15
0.1
0.05
0
0 0
20
40
60
80
100
0
120
20
40
NJM2861/62_3.0V Control Current vs. Control Voltage
30
60
80
100
120
Output Current : Io(mA)
Output Current : I O(mA)
NJM2861/62_3.0V Output Voltage vs. Control Voltage
4
o
@:Ta=25 C V IN=4V Co=1µF(Ceramic) Cp=0.01µF Io=30mA
3.5
Rc=0Ω
3
20
Output Voltage : Vo(V)
Control Current : Icont( µ A)
25
15 Rc=50kΩ Rc=0Ω 10
2.5 Rc=100kΩ
2
1.5
Rc=50kΩ
1
o
@:Ta=25 C VIN=4V Co=1µF(Ceramic) Cp=0.01µF Io=30mA
5 0.5 Rc=100kΩ 0
0 0
0.5
1
1.5
2
2.5
Control Voltage : Vcont(V)
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3
3.5
4
0
0.5
1
1.5
2
2.5
3
Control Voltage : Vcont(V)
Ver.2006-02-20
NJM2861/62 ! ELECTRICAL CHARACTERISTICS NJM2861/62_3.0V Load Regulation vs. Output Current
NJM2861/62_3.0V Peak Output Current vs. Input Voltage
200
0 o
@:Ta=25 C V IN=4V Co=1µF(Ceramic) Cp=0.01µF
Peak Output Current : IoMAX(mA)
Load Regulation : dVo/dIo (mV)
-10
-20
-30
-40
-50
-60
150
100
50 o
@:Ta=25 C Co=1µF(Ceramic) Cp=0.01µF
-70
-80
0 0
50
100
4
150
6
8
10
NJM2861/62_3.0V Quiescent Current vs. Input Voltage
o
o
@:Ta=25 C Output is open. Co=1µF(Ceramic) Cp=0.01µF including Icont
Output Noise Voltage : Vn ( µ Vrms)
Quiescent Current : IQ ( µ A)
14
NJM2861/62_3.0V Output Noise Voltage vs. Output Current
100
2000
1500
12
Input Voltage : VIN(V)
Output Current : Io(mA)
1000
500
@:Ta=25 C VIN=4.0V Cp=0.01µF LPF:100kHz
80
60 Co=1µF(Ceramic) 40
20 Co=2.2µF(Ceramic)
0 0.001
0 0
5
10
15
0.01
0.1
1
NJM2861/62_3.0V Ripple Rejection Ratio vs. Frequency
90
90
f=1kHz
Io=0mA
80
80
Ripple Rejection : RR (dB)
Ripple Rejection Ratio : RR (dB)
Io=10mA
70
60
Io=30mA
50
o
40
@:Ta=25 C V IN=4.0V ein=200mVrms Co=1µF(Ceramic) Cp=0.01µF
30
10
100
70
60
50
40
30
1k
Frequency : f (Hz)
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100
NJM2861/62_3.0V Ripple Rejection vs. Output Current
100
100
20
10
Output Current : Io(mA)
Input Voltage : VIN(V)
10k
100k
f=10kHz o
@:Ta=25 C VIN=4V ein=200mVrms Co=1µF(Ceramic) Cp=0.01µF
20 0.001
0.01
0.1
1
10
100
Output Current : Io(mA)
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NJM2861/62 ! ELECTRICAL CHARACTERISTICS NJM2861/62_3.0V Equivalent Serise Resistance vs. Output Current 100 o
Equivalent Serise Resistance : ESR(Ω )
@:Ta=25 C Co=1µF(Ceramic) Cp=0.01µF 10
Oscillation Free 1
0.1
0.02 1µ
10µ
1m
100µ
10m
100m
Output Current : Io(mA)
NJM2861/62_3.0V Dropout Voltage vs. Ambient Temperature
0.3
NJM2861/62_3.0V Output Voltage vs. Ambient Temperature
3.1
@:VIN=4V Io=30mA Co=1µF(Ceramic) Cp=0.01µF
@:VIN=4V Io=60mA Co=1µF(Ceramic) Cp=0.01µF
0.25
Output Voltage Vo (V)
Dropout Voltage : dVI-O (V)
3.05 0.2
0.15
0.1
3
2.95 0.05
2.9
0 -50
0
50
100
-50
150
o
0
50
100
NJM2861/62_3.0V Control Voltage vs. Ambient Temperature
NJM2861/62_3.0V Control Current v.s. Ambient Temperature
2
10 @:V IN=4V Output is open. Co=1µF(Ceramic) Cp=0.01µF V CONT=1.6V
1.5
Control Current : ICONT ( µ A)
Control Voltage : VCONT(ON) (V)
8
1
0.5
6
4
2
@:VIN=4V Io=30mA Co=1µF(Ceramic) Cp=0.01µF 0
0
-50
0
50
100 o
Ambient Temperature : Ta ( C)
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150
o
Ambient Temperature Ta ( C)
Ambient Temperature : Ta ( C)
150
-50
0
50
100
o
Temperature Ta ( C)
Ver.2006-02-20
NJM2861/62 ! ELECTRICAL CHARACTERISTICS NJM2861/62_3.0V Quiescent Current vs. Ambient Temperature
NJM2861/62_3.0V Short Circuit Current v.s. Temperature
200
200 @:VIN=4V Output is short to ground. Co=1µF(Ceramic) Cp=0.01µF
@:VIN=4V Output is open. Co=1µF(Ceramic) Cp=0.01µF
Short Circuit Current : ISC (mA)
Quiescent Current : IQ ( µ A)
150
100
50
0
150
100
50
0 -50
0
50
100
150
-50
0
o
100
150
Temperature : Ta ( C)
NJM2861/62_3.0V Line Regulation v.s. Temperature
NJM2861/62_3.0V Load Regulation v.s. Temperature
0.1
0.03 @:dV IN=4-9V Io=30mA Co=1µF(Ceramic) Cp=0.01µF
0.05
0
-0.05
-0.1 -50
@:VIN=4V Io=0-60mA Co=1µF(Ceramic) Cp=0.01µF
0.025
Load Regulation : dVo/dIo (%/mA)
Line Regulation : dVo/dIo (%/V)
50 o
Ambient Temperature : Ta ( C)
0.02
0.015
0.01
0.005
0 0
50
100
150
o
Temperature : Ta ( C)
-50
0
50
o
100
150
Temperature : Ta ( C)
NJM2861/62_3.0V Output Voltage vs. Ambient Temperature
4
3.5
Output Voltage Vo (V)
3
2.5
2
1.5
1 @:VIN=4V Io=30mA Co=1µF(Ceramic) Cp=0.01µF
0.5
0 -50
0
50
100
o
150
200
Ambient Temperature Ta ( C)
Ver.2006-02-20
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NJM2861/62 ! ELECTRICAL CHARACTERISTICS NJM2861/62_3.0V ON/OFF Transient Response Without Load
NJM2861/62_3.0V ON/OFF Transient Response
4
6
0
5
-5 Output Voltage
3
-10
2
-15
1
o
@:Ta=25 C VIN=4.0V Co=1.0µF(Ceramic) Cp=0.01µF Io=30mA
0 -1 0
4
8
12 Time : t [mS]
16
Output Voltage : Vo [V]
Output Voltage : Vo [V]
5
5
Control Voltage : Vo [V]
6
10
7
10 Control Voltage
5 0 -5
4 Output Voltage
-10
3
-15
2
-20
1
-25
0
-30
-1
20
Control Voltage
o
@:Ta=25 C VIN=4.0V Co=1.0µF(Ceramic) Cp=0.01µF Io=0mA
Control Voltage : Vo [V]
7
-20 -25 -30
0
1
2
NJM2861/62_3.0V Line Transient Response
3 Time : t [s]
4
5
NJM2861/62_3.0V Load Transient Response
3.1
7
3.08
3.08
6
3.06
150 100
3.04
4
3.02
3 Output Voltage
3
2
2.98
o
@:Ta=25 C Co=1.0µF(Ceramic) Cp=0.01µF Io=30mA
2.96 2.94 0
40
80
120 Time : t [µ µ s]
160
Output Voltage : Vo [V]
5 Input Voltage
Input Voltage : VIN [V]
Output Voltage : Vo [V]
3.06
3.04
50
3.02
0 -50
2.98
1
2.96
0
2.94
-1 200
Output Voltage
3
-100 o
-150
@:Ta=25 C V IN=4.0V Co=1.0µF(Ceramic) Cp=0.01µF
-200
2.92 0
40
80
Output Current : Io [mA]
Output Current
120 Time : t [µ µ s]
160
-250 200
[CAUTION] The specifications on this databook are only given for information , without any guarantee as regards either mistakes or omissions. The application circuits in this databook are described only to show representative usages of the product and not intended for the guarantee or permission of any right including the industrial rights.
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Ver.2006-02-20
