AQ431R Datasheet, PDF (1/6 Pages) Acutechnology Semiconductor – 2.5V Shunt Ref/Amplifier TO-92 and SOT23 Package

Preliminary Specification
Revision 1.6
AQ431R
2.5V Shunt Ref/Amplifier
TO-92 and SOT23 Package
June 15, 2007
General Description
Applications
The AQ431R is a three-terminal adjustable _•
shunt regulator based on a highly stable _•
bandgap reference and is an excellent
replacement for standard TL431 references
•
Power supply control loop
Low TC voltage reference
Power management applications
when used as a secondary feedback element
in Switch Mode Power Supplies.
Features
The AQ431R meets all of the requirements of ^{• Programmable precise output voltage}
the standard 431 specifications that are ^{2.5V to 15V}
needed to monitor the secondary output • Wide temp range: -40º to 85ºC standard
voltage and provide the feedback signal to _{• Improved stability with capacitive loads}
the primary through an opto-coupler. It is
offered in both the very popular SOT23-3 and
TO-92 packages.
•
•
Low TC voltage reference
Wide range of package options
• RoHS compliant
Pin Configuration
Pin Descriptions
Pin Name
CATH
REF
ANODE
Function
Output and supply terminal, must be greater than 2.5V for normal operation
Input, nominally 2.495V in normal operation.
Ground and Substrate
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AQ431R