
TYPICAL PERFORMANCE CHARACTERISTICS
V IN
R3
V OUT
V IN
I SINK
R2
R1
0.1%
V REF
SPX432
Q1
SPX432
R2
0.1%
Shunt Regulator, V OUT = (1+R1/R2)V REF .
Constant Current Sink I SINK = V REF /R1.
R1
0.1%
V OUT
V IN
Opto Isolator
R3
R1
0.1%
R5
R4
Isolated
Feedback
R3 sets feedback gain,
C1 provides feedback
compensation
C2
+
C1
SPX432
C1
R1
0.1%
R2
R3
V OUT
SPX432
R2
0.1%
V OUT RTN
Reference Amplifier for Isolated Feedback in Off-Line
DC-DC Converters.
0.1%
Precision High Current Series Regulator,
V OUT = (1+R1/R2)V REF .
V IN
R1
0.1%
R3
V OUT
V CC
R2
R2
0.1%
Q1
V IN
R1
V OUT
SPX432
SPX432
High Current Shunt Regulator, V OUT = (1+R1/R2)V REF .
Single Supply Comparator with Temperature
Compensated Threshold, V IN threshold = 1.24V.
Date: 12/ 11 /04
SPX432 1.24V Precision Adjustable Shunt Regulator
7
? Copyright 2004 Sipex Corporation