APL1117
Application Circuits
1.25V to 10.7V Adjustable Regulator
Improving Ripple Rejection
APL1117
VIN
IN
OUT
ADJ
R1
121Ω
+ 10µF
C1*
R2
1k
VOUT1
+ 100µF
C2
* Needed if device is far from filter capacitors
R1 + R2
VOUT = 1.250V X R1
5V Regulator with Shutdown
V IN
+
10µF
APL1117
IN
OUT
ADJ
R2
365Ω
1%
* C1 improves ripple rejection.
XC should be approximately
equal to R1 at ripple frequency
R1
121Ω
1%
+ C1
10µF
VOUT
150µ F
APL1117
VIN
IN OUT
ADJ
+
10µ F
1k
TTL
1k
121Ω
1%
+
365Ω
1%
5V
100µ F
Copyright ANPEC Electronics Corp.
5
Rev. B.8 - Jun., 2003
www.anpec.com.tw