Zr431, Adjustable precision zener shunt regulator – Diodes ZR431 User Manual
Page 6
ZR431
ADJUSTABLE PRECISION ZENER SHUNT REGULATOR
ZR431
Document number: DS33255 Rev. 6 - 2
6 of 9
October 2011
© Diodes Incorporated
ADVAN
CE I
N
F
O
RM
ATI
O
N
Application Characteristics
VREF
2
R
1
R
1
VOUT
⎟
⎠
⎞
⎜
⎝
⎛ +
=
SHUNT REGULATOR
VREF
2
R
1
R
1
VOUT
⎟
⎠
⎞
⎜
⎝
⎛ +
=
HIGHER CURRENT SHUNT REGULATOR
V
OUT(MIN)
= V
REF
+ V
REG
VREF
2
R
1
R
1
VOUT
⎟
⎠
⎞
⎜
⎝
⎛ +
=
OUTPUT CONTROL OF A THREE TERMINAL
FIXED REGULATOR
VREF
2
R
1
R
1
VOUT
⎟
⎠
⎞
⎜
⎝
⎛ +
=
SERIES REGULATOR
SINGLE SUPPLY COMPARATOR WITH
TEMPERATURE COMPENSATED THRESHOLD
VREF
B
2
R
B
1
R
1
it
lim
Low
⎟
⎠
⎞
⎜
⎝
⎛ +
+
VREF
A
2
R
A
1
R
1
it
lim
High
⎟
⎠
⎞
⎜
⎝
⎛ +
+
OVER VOLTAGE/UNDER VOLTAGE
PROTECTION CIRCUIT
V+
V
OUT
V
REF
R1
R2
ZSR***
Common
IN
OUT
V+
V
REF
V
OUT
R2
R1
30
Ω
0.01µF
V+
V
OUT
V
REF
R1
R2
V+
V
OUT
R1
R2
V
REF
V+
INPUT
V
= 2.5V
TH
OUTPUT
V
= V+
OFF
V
2V
ON
≈
V+
V
REF
OUTPUT
V
REF
R1A
R1B
R2A
R2B