AP431/ AP431A

Datasheet

AP431/ AP431A
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Environment Reports

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Description

The AP431 and 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.

Features and Benefits

• 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: SOT23, SOT23R, SOT25, SC59, SC59R, SO-8, SOT89 and
TO92-3L
• Lead Free packages: SOT25, SC59, SC59R, SOT89 and TO92-3L
• SOT23, SOT23R, SC59, SC59R, SO-8 and TO92-3L: Available in “Green”
Molding Compound (No Br, Sb)
• Lead Free Finish/ RoHS Compliant

Part Number	AP431/ AP431A
Reference Voltage V	2.495
Accuracy %	0.5/1
Max. Input Voltage V	36
Sink Current mA	250
Minimum Cathode Current for Regulation typ. μA	190
Maximum Slope Resistance Ω	0.5
Operating Ambient Temperature Range °C	-20 to +85

Design Tools

• Parametric Search
• Application Notes
• Design Notes
• Cross Reference
• Calculators
• Simulators / Examples
• Spice Models
• User Guides
• Application Notes: AN58, AN59, AN60, AN61, AN62, AN63

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