NJM2387/89
ADJUSTABLE LOW DROPOUT VOLTAGE REGULATOR
GENERAL DESCRIPTION
The NJM2387/89 are adjustable low dropout voltage regulators .
The output current is up to 1.0A and dropout voltage is 0.2V typ. at
Io=0.5A. NJM2387 has ON/OFF control circuit and enable to
reduce quiescent current.
The NJM2387/89 are suitable for power module, TV, Display, car
stereo and low power applications.
PACKAGE OUTLINE
NJM2387DL3
NJM2389F
FEATURE
Low Dropout Voltage
∆VI-O=0.2V typ. at Io=0.5A
Output Current
Io(max.)=1.0A
Reference Voltage
Vref=1.26V ± 2%
ON/OFF Control
(Active High : Only NJM2387)
Internal Short Circuit Current Limit
Internal Overvoltage Protection
Internal Thermal Overload Protection
Bipolar Technology
Package Outline
TO-252-5(NJM2387), TO-220F-4(NJM2389)
PIN CONFIGURATION
PIN FUNCTION
1. VIN
2. VOUT
3. GND
4. VADJ
PIN FUNCTION
1.VIN
2.ON/OFF CONTROL
3.VOUT
4.VADJ
5.GND
3
123 45
NJM2387DL3
123 4
NJM2389F
EQUIVALENT CIRCUIT
VOUT
VOUT VIN
VIN
Overvoltage
Protection
Overvoltage
Protection
CONTROL
VADJ
VADJ
ON/OFF
Control
GND
Bandgap
Reference
Bandgap
Reference
Thermal
Protection
NJM2387DL3
Ver.2006-11-22
Current
Limit
GND
Thermal
Protection
Current
Limit
NJM2389F
-1-
