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Test Circuits
IN
OUT
IN
OUT
V
IN
V
V
V
V
1
3
1
3
OUT
V
RS78XX
RS78XX
Series
1
3
RS7805
Series
Series
- +
IN
270pF
100
C
2
2
L
R
2
0.33uF
IN
OUT
C
C
+
0.33uF
0.1uF
DC 9V
L
R
-
OUT
V
0V
DC Parameter
Load Regulation
Ripple Rejection
Application Circuits
Constant Current Regulator
Circuit for Increasing Output Voltage
V
V
V
V
IN
OUT
IN
OUT
1
3
1
3
RS78XX
RS78XX
Series
Series
2
2
R
I
R
1
1
B
0.33uF
0.33uF
I
R1
0.1uF
10uF
0.1uF
10uF
R
2
VOUT=VOUT(IC)+VZ
I1=VOUT(IC)/R1
VOUT=VOUT(IC)(1+R2/R1)+R2*IB
Adjustable Output Regulator
High Output Current with Short‐circuit Protection
VIN
Rsc
Q1
V
V
OUT
IN
1
3
RS78XX
R1 Q2
Series
1
3
RS78XX
Series
0.1uF 10uF
2
I
B
0.33uF
2
-
R
0.33uF
1
2
+
0.1uF
10uF
R
R1≤VBE1/IB(max)
RSC=VBE2/ISC, ISC: Short‐Circuit Current
VOUT=VOUT(IC)(1+R2/R1)
DS‐RS78XX‐08 September, 2009
www.Orister.com
ORISTER [ ORISTER CORPORATION ]
