NJM2378D 데이터 시트보기 (PDF) - Japan Radio Corporation
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NJM2378D Datasheet PDF : 8 Pages
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NJM2378
PWM SWITCHING REGULATOR CONTROL IC FOR SLAVE TYPE
■ GENERAL DESCRIPTION
The NJM2378 is a high speed switching regulator control
IC, and directly drive an external Bipolar Transistor to use
internal totempole output circuit.
The NJM2378 operate slave mode which synchronous
external oscillation frequency, and the slave mode reduce
the total noise.
The NJM2378 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
NJM2378D
NJM2378E
NJM2378M
NJM2378V
■ BLOCK DIAGRAM
REF
8
VREF
U.V.LO
CT
7
30uA
CS
6
L.O
0.52V
ER⋅AMP
PW M
S.C.P
V+
5
500Ω
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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