Spec. No. : IC200405
Issued Date : 2004.04.01
Revised Date : 2006.01.19
Page No. : 7/12
HI-SINCERITY
MICROELECTRONICS CORP.
Test Circuits
V
IN
V
OUT
V
IN
VOUT
V
IN
1
3
1
3
V
OUT
H78XX
Series
H78XX
Series
1
3
H7805
Series
- +
270pF
100
C
IN
2
2
R
L
2
0.33uF
C
IN
C
OUT
+
0.33uF
0.1uF
DC 9V
R
L
-
VOUT
0V
DC Parameter
Load Regulation
Ripple Rejection
Application Circuits
Constant Current Regulator
Circuit for Increasing Output Voltage
VIN
VOUT
1
3
VIN
VOUT
H78XX
Series
1
3
H78XX
Series
2
2
R1
I
B
R1
0.33uF
0.33uF
I
R1
0.1uF
10uF
0.1uF
10uF
R2
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
IN
VOUT
1
3
H78XX
Series
R1
Q2
VOUT
1
3
0.1uF 10uF
H78XX
Series
2
I
B
0.33uF
-
+
2
R1
R2
0.33uF
0.1uF 10uF
VOUT=VOUT(IC)(1+R2/R1)
R1≤VBE1/IB(max)
RSC=VBE2/ISC, ISC: Short-Circuit Current
H78XXAJ / BJ, H78XXAI / BI, H78XXANE / BNE, H78XXAE / BE
HSMC Product Specification
HSMC [ HI-SINCERITY MOCROELECTRONICS ]
