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NJM2379D

PWM SWITCHING REGULATOR CONTROL IC FOR SLAVE TYPE

Japan Radio Corporation  

NJM2379

PWM SWITCHING REGULATOR CONTROL IC FOR SLAVE TYPE

■ GENERAL DESCRIPTION

The NJM2379 is a high speed switching regulator control

IC, and directly drive an external power MOS-FET to use

internal totempole output circuit.

The NJM2379 operate slave mode which synchronous

external oscillation frequency, and the slave mode reduce

the total noise.

The NJM2379 is suitable for flyback type switching

regulation up to 10W and several output power supply for

LCD panel.

■ FEATURES

● Operating Voltage

(3.6 to 32V)

● Reference Voltage

(2.5V±2%)

● Input Outside

Oscillator Frequency (5 to 350 kHz)

● Output Switch Current (±8mA min.)

● Under Voltage Lockouts Circuit

● Bipolar Technology

● Package Outline

DIP8,DMP8,EMP8,SSOP8

■ PACKAGE OUTLINE

NJM2379D

NJM2379E

NJM2379M

NJM2379V

■ BLOCK DIAGRAM

REF

CT

CS

V+

8

7

6

5

30uA

VREF

L.O

U.V.LO

0.52V

ER⋅AMP

PWM

S.C.P

PIN FUNCTION

1. IN-

2. F.B

3. GND

4. OUT

5. V+

6. CS

7. CT

8. REF

1

2

3

4

IN-

F.B

GND

OUT

Ver.2004-03-03

-1-

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