AP432

Features:

- Precision reference voltage
AP432 : 1.24V ± 1%
AP432A : 1.24V ± 0.5%
- Sink current capability: 200mA.
- Minimum cathode current for regulation: 150A
- Equivalent full-range temp coefficient: 30 ppm/oC
- Fast turn-on Response.
- Low dynamic output impedance: 0.2
- Programmable output voltage to 20v
- Low output noise
- Packages: SOT89, SOT23, SOT25, SOP8 and TO92




Specifications

Part Number	AP432
Reference Voltage (V)	1.24
Accuracy (%)	1
Max Input Voltage (V)	36
Sink Current (mA)	250
Minimum Cathode Current for Regulation (uA) typ	150
Maximum Slope Resistance (Ohm's)	0.5
Operating Ambient Temp Range (°C)	-20 to +85

Cathode Voltage........................ 20V
Continuous cathode current ................. 10mA ~ 250mA
Reference input current range ...................... 10mA
Operating temperature range (AP432) ............. -20oC ~ 85oC
(AP432I...............-40oC~85oC
Lead Temperature..................... .260oC
Storage Temperature ................ -65oC ~ 150oC
Power Dissipation (Notes 1. 2) SOT89 ................ 0. 80W
TO92............ 0.78W
SOT23 .................0.25W
SOT25................. 0.25W
SOP.................. 0.6W




Description

The AP432/432A 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\/ (VREF) up to 20V merely by selecting two external resistors that act as a voltage divider network. AP432 have a typical output impedance of 0.2. 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 AP432/432A 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.