AP432_10 Datasheet, PDF (1/14 Pages) Diodes Incorporated – ADJUSTABLE PRECISION SHUNT REGULATOR

AP432/AP432A
ADJUSTABLE PRECISION SHUNT REGULATOR
Features
Description
• Precision reference voltage
• AP432 : 1.24V ± 1%
• AP432A : 1.24V ± 0.5%
• Sink current capability: 200mA
• Minimum cathode current for regulation: 150μA
• Equivalent full-range temp coefficient: 30 ppm/oC
• Fast turn-on response
• Low dynamic output impedance: 0.2Ω
• Programmable output voltage to 20V
• Low output noise
• Lead Free packages: SOT25, SC59, SC59R, SOT89-3L
and TO92-3L
• SOT23, SOT23R, SOT25, SC59, SC59R, SOP-8L,
SOT89-3L and TO92-3L: Available in “Green” Molding
Compound (No Br, Sb)
• Lead Free Finish/ RoHS Compliant (Note 1)
The AP432 and AP432A are 3-terminal adjustable precision
shunt regulators with guaranteed stable temperature over
the applicable extended commercial temperature range.
The output voltage may be set at any level greater than
1.24\/ (V_REF) up to 20V 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
AP432/AP432A 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.
Notes: 1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at
http://www.diodes.com/products/lead_free.html.
Typical Application Circuit
V IN
+
C in
AP432
VOUT
R1
+
C out
R2
VOUT = (1+R1/R2)VREF
Precision Regulator
AP432/AP432A
Document number: DS31003 Rev. 16 - 2
1 of 14
www.diodes.com
June 2010
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