NJM2381
SWITCHING REGULATOR CONTROL IC FOR FLYBACK
WITH CURRENT SENSE AMPLIFIER
sGENERAL
DESCRIPTION
The
NJM2381
is a low voltage operation DC/DC converter
control IC.
It features totem pole output directly driving external
bipolar transistor and operates at high switching frequency
which improves transient response.
It is suitable for LCD back light, and other portable
applications.
sPACKAGE
OUTLINE
NJM2381D
NJM2381M
sFEATURES
q
PWM switching control
q
Operating Voltage
(3.6 to 32V)
q
Wide Oscillator Range
(5 to 350 kHz)
q
Current Sensing Amplifier
q
Soft-Start Function
q
UVLO(Under Voltage Lockouts)
q
Bipolar Technology
q
Package Outline
DIP14, DMP14, SSOP10
NJM2381V
sPIN
CONFIGURATION
1
2
3
4
5
6
7
14
13
12
11
10
9
8
PIN FUNCTION
8.NC
1.NC
-
9. V
+
2.IN 1
3.IN
-
2
10.CS
11.CT
4.F.B
12.REF
5.GND
13.IN
+
6.OUT
7.NC
14.NC
NJM2381D
NJM2381M
1
2
3
4
5
10
9
8
7
6
NJM2381V
PIN FUNCTION
6. V
+
1.IN
-
1
2.IN
-
2
7.CS
8.CT
3.F.B
9.REF
4.GND
10.IN
+
5.OUT
Ver 3.1
- 1 -