NJM2379E データシートの表示（PDF） - Japan Radio Corporation
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NJM2379E Datasheet PDF : 8 Pages
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■ TYPICAL APPLICATIONS
Synchronous mode with NJM2369
NJM2379
8
7
6
5
8
7
6
5
VOUT1
VOUT2
1
2
3
4
NJM2369
1
2
3
4
NJM2379
External pulse mode
V+
Duty 50%
Input Pulse
0.5V
0.5V
GND
CIN
GND
Rsf
Rsr Cs
8
VREF
U.V.LO
0.52V
ER⋅AMP
7
6
30uA
L.O
PWM
S.C.P
1
2
3
CLP
Rf
5
D1
N1
N2
L
COUT
4
Q1
*100kΩ
VOUT
R1
R2
GND
When Short Circuit Protection (SCP) is activated, Output terminal (Pin 4) becomes high impedance and the external
switching transistor (Q1) is turned off.
However, small leak current from Output terminal at high ambient temperature may turn on the external switching transistor
causing malfunction of the SCP particularly when FET is used as a switching device.
To avoid this issue, insert a 100kΩ resistor between the Gate and the Source of the external transistor.
Ver.2004-03-03
-5-
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