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PDF NJM2387A Data sheet ( Hoja de datos )
| Número de pieza | NJM2387A | |
| Descripción | ADJUSTABLE LOW DROPOUT VOLTAGE REGULATOR | |
| Fabricantes | JRC | |
| Logotipo |  |
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NJM2387A
ADJUSTABLE LOW DROPOUT VOLTAGE REGULATOR
WITH ON/OFF CONTROL
GENERAL DESCRIPTION
The NJM2387A is an adjustable low dropout voltage regulator.
The output current is up to 1.0A and dropout voltage is 0.2V typ. at
Io=0.5A.
OFF control quiescent current is drastically reduced compare with
the current NJM2387 through changing ON/OFF control circuit.
The NJM2387A is suitable for power module, TV, Display, car stereo
and low power applications.
FEATURES
Low Dropout Voltage
Output Current
∆VI-O=0.2V typ. at Io=0.5A
Io(max.)=1.0A
Reference Voltage
Vref=1.26V ± 2%
ON/OFF Control
Internal Short Circuit Current Limit
Internal Overvoltage Protection
Internal Thermal Overload Protection
Bipolar Technology
Package Outline
TO-252-5
PIN CONFIGURATION
3
PIN FUNCTION
1.VIN
2.ON/OFF CONTROL
1 2 345
3.VOUT
4.VADJ
5.GND
NJM2387ADL3
PACKAGE OUTLINE
NJM2387ADL3
EQUIVALENT CIRCUIT
VIN
CONTROL
Overvoltage
Protection
GND
Bandgap
Reference
Thermal
Protection
VOUT
VADJ
Current
Limit
NJM2387ADL3
Ver.2006-11-22
-1-
1 page  
www.DataSheet4U.com
ELECTRICAL CHARACTERISTICS
NJM2387A_10V
Load Regulation vs. Output Current
3
2
1
0
-1
@:Ta=25oC
-2
V IN=12V
Co=22 µF
R1=1kΩ
R2=6.94kΩ
-3
0 500 1000
Output Current : Io(mA)
1500
1 10-9
8 10-10
NJM2387A_10V
Quiescent Current(OFF) vs. Input Voltage
@:Ta=25oC
Co =22µF
VCONT=0V
6 10-10
4 10-10
2 10-10
0
0 5 10 15 20 25 30 35
Input Voltage : VIN(V)
NJM2387A_10V
Ripple Rejection Ratio v.s. Frequency
100
90
80
Io=0A
70
60
Io=0.5A
50
Io=0.1A
40
@:Ta=25oC
30
V IN=12V
ein=500mVrms
Co=22µF
20
10
100
Io=1A
1k
Frequency : f (Hz)
10k
100k
Ver.2006-11-22
NJM2387A
3000
2500
2000
1500
1000
500
0
10
NJM2387A_10V
Peak Output Current vs. Input Voltage
@:Ta=25oC
R1=1kΩ
R2=6.94kΩ
Co=22µF
Vo=9V
15 20 25 30
Input Voltage : VIN(V)
35
NJM2387A_10V
Output Noise Voltage vs. Output Current
500
@:Ta=25oC
V IN=1 1V
LPF:80kHz
400 Co=22µF
300
200
100
0
0.010µ1
01.01µ
100.10µ
11m
1100m
110000m 10100
Output Current : Io(A)
NJM2387A_10V
Ripple Rejection vs. Output Current
100
90
80
70
60
50
40
@:Ta=25oC
VIN=12V
30 ein=500mVrms
f =1 20H z
Co=22µF(Ceramic)
20
0.001
0.01
0.1
1
10
Output Current : Io(mA)
100
1000
-5-
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet NJM2387A.PDF ] | |
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