ISSUED DATE :2004/02/23
REVISED DATE :2004/10/21C
G432
Description
Adjustable Shunt Regulator
The G432 series are three-terminal adjustable precision shunt regulators with guaranteed stable temperature over the
applicable extended commercial temperature range. The output voltage may be set at any level greater than 1.24V (V
REF
)
up to 20V merely by selecting two external resistors that act as a voltage divider network. These devices have a typical
output impedance of 0.2 . Active output circuitry provides very sharp turn-on characteristics, making these devices
excellent improved replacements for Zener diodes in many applications.
The precise +/- 2% reference voltage tolerance of G432 make it possible in many applications to avoid the use of a variable
resistor, consequently saving cost and eliminating drift and reliability problems associated with it.
Features
*Precision reference voltage
A Rank: 1.24V D
0.5% ,
B Rank: 1.24V D ,
1%
C Rank: 1.24V D
2.0%
*Sink current capability: 200 mA.
*Minimum cathode current for regulation: 150 A.
*Equivalent full-range temp coefficient: 30 ppm/ : .
*Fast turn-on Response.
*Low dynamic output impedance: 0.2 .
*Programmable output voltage to 20V.
*Low output noise.
Package Dimensions
REF.
A
B
C
D
E
F
Millimeter
Min.
Max.
2.70
3.10
2.40
2.80
1.40
1.60
0.35
0.50
0
0.10
0.45
0.55
REF.
G
H
K
J
L
M
Millimeter
Min.
Max.
1.90 REF.
1.00
1.30
0.10
0.20
0.40
-
0.85
1.15
0C
10 C
Typical Application Circuit
Block Diagram
Symbol
G432
1/5
1
2
3
4
5
