AP431 Datasheet, PDF (1/17 Pages) Anachip Corp – Adjustable Precision Shunt Regulator

AP431/AP431A
Adjustable Precision Shunt Regulator
„ Features
„ Description
• Precision reference voltage
AP431 : 2.495V ± 1%
AP431A : 2.495V ± 0.5%
• Sink current capability: 200mA
• Minimum cathode current for regulation: 300μA
• Equivalent full-range temp coefficient: 30 ppm/^oC
• Fast turn-on response
• Low dynamic output impedance: 0.2Ω
• Programmable output voltage to 36v
• Low output noise.
• Packages: TO92, SOT89, SOT23, SOT25 and
SOP
The AP431/AP431A are 3-terminal adjustable
precision shunt regulators with guaranteed
temperature stability over the applicable extended
commercial temperature range. The output voltage
may be set at any level greater than 2.495V(V_REF)
up to 36V merely by selecting two external resistors
that act as a voltage divider network. These devices
have a typical output impedance of 0.2Ω. Active
output circuitry provides very sharp turn-on
characteristics, making these devices excellent
improved replacements for Zener diodes in many
applications.
The precise (+/-) 1% Reference voltage tolerance of
the AP431/431A 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.
„ Ordering Information
A P 4 3 1XXXXX
Operating Temp. Range
Blank : -20^oC~85^oC
I : -40^oC~85^oC
Reference Voltage
Tolerance:
Blank : +/- 1%
A : +/- 0.5%
Package
Lead Free
Blank : SOP-8L Blank : Normal
Y : SOT89-3L L : Lead Free Package
V : TO92-3L
W : SOT23-3L
R : SOT23-3L
Q : SOT25
Packing
Blank : Tube or bulk
A : Taping
„ Typical Application Circuit
VIN
+
Cin
AP431
VOUT
R1
+
Cout
R2
VOUT = (1+R1/R2)VREF
Precision Regulator
This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of
this product. No rights under any patent accompany the sale of the product.
Rev.1.0 May.7, 2004
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