APL5331
Typical Application Circuit
1. VOUT=1.25V/0.9V Application
VCNTL
+3.3V
VIN
VIN
VC N TL
VOU T
+2.5V/1.8V
R1
1k
VOUT
+1.25V/0.9V
VR EF
GND
CIN
-3~+3A
VREF
CSS
0.1uF
470uF
CCNTL
47uF
COUT
470uF
R2
Shutdown
1k
Q1
GND
GND
COUT : 470µF, ESR=25mΩ
R1, R2 : 1kΩ, 1%
Q1 : APM2300 AC
Note : Since R1 and R2 are very small, the voltage offset
caused by the bias current of VREF can be ignore.
2. VOUT=1.4V Application
VCNT L
+5V
VIN
+2.8V
VIN
VCNTL
VOUT
R1
1k
VOUT
+1.4V/
-3~+3A
VREF
GND
CIN
470µF
VREF
CSS
CCNT L
47µF
COUT
470µF
R2
1k
0.1µF
GND
GND
Copyright ANPEC Electronics Corp.
Rev. A.8 - Oct., 2003
5
www.anpec.com.tw
ANPEC [ ANPEC ELECTRONICS COROPRATION ]
