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PDF ZR2431C02 Data sheet ( Hoja de datos )

Número de pieza ZR2431C02
Descripción ADJUSTABLE PRECISION ZENER SHUNT REGULATOR
Fabricantes ETC 
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No Preview Available ! ZR2431C02 Hoja de datos, Descripción, Manual

ADJUSTABLE PRECISION
ZENER SHUNT REGULATOR
ISSUE 3 DECEMBER 1997
DEVICE DESCRIPTION
The ZR2431 is a three terminal adjustable
shunt regulator offering excellent
temperature stability and output current
handling capability up to 25mA. The output
voltage may be set to any chosen voltage
between 1.24 and 15 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.
The ZR2431 is particularly used in the
feedback control loop of switch mode power
supplies. In this application the device 1.24
volt reference enables the generation of low
voltage supplies, typically 3.3 volts or 3 volts.
SCHEMATIC DIAGRAM
Vref
ZR2431
FEATURES
Surface mount SOT23, SOT223, SOT89
and SO8 packages
TO92 package
2.5% and 1% tolerance
Maximum temperature coefficient 52
ppm/°C
Temperature compensated for
operation over the full temperature
range
Programmable output voltage
100µA to 25mA current sink capability
Low output noise
APPLICATIONS
Shunt regulator
Series regulator
Voltage monitor
Over voltage/ under voltage protection
Switch mode power supplies
VZ
4-154
Gnd

1 page




ZR2431C02 pdf
ZR2431
DC TEST CIRCUITS
Input
IL
VZ Input
IL
VZ
IZ
Iref
R1
I ref
IZ
1µF 1µF
Vref R2 Vref
Input
VZ
Izoff
1µF
Fig 1 – Test Circuit for Vz=Vref Fig 2 – Test Circuit for Vz>Vref
Fig 3 – Test Circuit for Off
State current
4-158

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