NJM2387 查看數據表（PDF） - Japan Radio Corporation
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NJM2387 Datasheet PDF : 10 Pages
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TEST CIRCUIT
NJM2387/89
VIN NJM2387 VOUT
GND Control VADJ
VIN
+
0.33µF
IQ A
A Ic
Vc
R2
A Io
+
R1
22µF
1kΩ
V Vo
RL
TYPICAL APPLICATION
1 In the case where ON/OFF Control is not required:
Vo = Vref × (1 + R2/R1)
VIN
+
0.33µ F
VIN
V OUT
NJM2387
R2
V OUT
+
22µF
CONTROL
GND
VADJ
R1
1kΩ
Connect control terminal to VIN terminal or open.
2 In use of ON/OFF CONTROL:
VIN
+
0.33µ F
RC
VIN
V OUT
NJM2387
R2
CONTROL
VADJ
GND
R1
1kΩ
State of control terminal:
•“H” or “open” → output is enabled.
•“L” → output is disabled.
V OUT
+
22µ F
Ver.2004-12-22
-3-
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