zr431 Zetex Semiconductors plc., zr431 Datasheet - Page 5

• Manufacturer Part Number: zr431
• Description: Zr431 - Adjustable Precision Zener Shunt Regulator
• Manufacturer: Zetex Semiconductors plc.

APPLICATION CIRCUITS
V+
V+
THREE TERMINAL FIXED REGULATOR
INPUT
Vout
V
OUTPUT CONTROL OF A
SINGLE SUPPLY COMPARATOR
Vref
TH
Vout = 1 +
COMPENSATED THRESHOLD
SHUNT REGULATOR
MIN
= 2.5V
Vout =
ZSR***
In
WITH TEMPERATURE
= Vref + Vreg
Common
R1
R2
1 +
V+
R1
R2
Out
R1
R2
Vref
OUTPUT
V
V
Vref
on
off
= V+
Vout
Vref
R1
R2
2V
Vout
4-193
78
V+
R1A
R2A
Vref
Low limit =
High limit = 1 +
V+
V+
OVER VOLTAGE / UNDER VOLTAGE
HIGHER CURRENT SHUNT REGULATOR
R1B
R2B
Vref
1 +
Vref
Vout = 1 +
R1B
R2B
R1A
R2A
SERIES REGULATOR
Vout =
30
0.01µF
R1
R2
Vref
Vref
R2
R1
1 +
Vref
ZR431
R1
R2
R1
R2
Vref
Vref
OUTPUT
Vout
Vout