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PDF ZR431 Data sheet ( Hoja de datos )
| Número de pieza | ZR431 | |
| Descripción | ADJUSTABLE PRECISION ZENER SHUNT REGULATOR | |
| Fabricantes | Zetex Semiconductors | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de ZR431 (archivo pdf) en la parte inferior de esta página. Total 7 Páginas | ||
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ADJUSTABLE PRECISION
ZENER SHUNT REGULATOR
ISSUE 4 – SEPTEMBER 2000
DEVICE DESCRIPTION
The ZR431 is a three terminal adjustable
shunt regulator offering excellent
temperature stability and output current
handling capability up to 100mA. The output
voltage may be set to any chosen voltage
between 2.5 and 20 volts by selection of two
external divider resistors.
The devices can be used as a replacement
for zener diodes in many applications
requiring an improvement in zener
performance.
SCHEMATIC DIAGRAM
ZR431
FEATURES
Surface mount SO8, SOT223 and
SOT23 packages
TO92 package
2%, 1 % and 0.5% tolerance
Max. temperature coefficient 55 ppm/°C
Temperature compensated for operation
over the full temperature range
Programmable output voltage
50A to 100mA current sink capability
Low output noise
APPLICATIONS
Shunt regulator
Series regulator
Voltage monitor
Over voltage/ under voltage protection
Switch mode power supplies
VZ
V ref
4-189
78
G
nd
1 page  
APPLICATION CIRCUITS
V+
R1
Vref
R2
Vout
Vout = 1 + R1
R2
Vref
SHUNT REGULATOR
ZR431
V+
R1
Vref
R2
Vout
Vout = 1 + R1
R2
Vref
HIGHER CURRENT SHUNT REGULATOR
V+ ZSR***
Vout
In Out
Common
R1
Vref
R2
Vout = Vref + Vreg
MIN
Vout = 1 + R1
R2
Vref
OUTPUT CONTROL OF A
THREE TERMINAL FIXED REGULATOR
V+
INPUT
V TH = 2.5V
OUTPUT
V on 2V
V off = V+
SINGLE SUPPLY COMPARATOR
WITH TEMPERATURE
COMPENSATED THRESHOLD
V+
30
0.01µF
R1
Vref
R2
Vout
Vout = 1 + R1
R2
Vref
SERIES REGULATOR
V+
R1A
Vref
R2A
R1B
R2B
Vref OUTPUT
Low limit = 1 + R1B
R2B
High limit = 1 + R1A
R2A
Vref
Vref
OVER VOLTAGE / UNDER VOLTAGE
4-193
78
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet ZR431.PDF ] | |
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