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AT431 Datasheet, PDF (1/14 Pages) List of Unclassifed Manufacturers – Low-Voltage Adjustable Precision Shunt Regulator | |||
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Features
ËLow-Voltage Operation: Down to 1.24V
Ë1% Reference-Voltage Tolerance
ËAdjustable Output Voltage, Vo=Vref to 12V
ËLow Operational Cathode Currentâ¦.50μA
Ë0.25⦠Typical Output Impedance
ËSOT-23-3 , SOT-23-5 and TO-92 Packages
Application
ËLinear Regulators
ËVoltage Reference for Power Circuit
AT431
Low-Voltage Adjustable Precision
Shunt Regulator
Description
The AT431 is low-voltage three-terminal
adjustable voltage reference with specified
thermal stability over applicable commercial
temperature ranges. Output voltage may be set to
any value between Vref (1.24V) and 12V with
two external resistors (see Figure 2).
When used with an optocoupler, the AT431 is
ideal voltage reference in isolated feedback
circuits for 1.8V to 12 V switching-mode power
supplies. This device has typical output
impedance of 0.20â¦. Active output circuitry
provides a very sharp turn-on characteristic,
making the AT431 excellent replacements for
low-voltage zener diodes in many applications,
including onboard regulation and adjustable
power supplies.
Block Diagram and Symbol
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878
WWW: http://www.aimtron.com.tw
Fax: 886-3-563-0879
Email: service@aimtron.com.tw
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