A Product Line of Diodes Incorporated
AN431
ADJUSTABLE PRECISION SHUNT REGULATORS
Description
The AN431 series ICs are ...
A Product Line of Diodes Incorporated
AN431
ADJUSTABLE PRECISION SHUNT REGULATORS
Description
The AN431 series ICs are three-terminal adjustable shunt regulators with guaranteed thermal stability over a full operation range. These ICs feature sharp turn-on characteristics, low temperature coefficient and low output impedance, which make them ideal substitutes for Zener diodes in applications such as switching power supply, charger and other adjustable regulators.
The output
voltage of these ICs can be set to any value between VREF (2.5V) and the maximum cathode
voltage (36V).
The AN431 precision reference is offered in two
voltage tolerance: 0.5% and 1.0%.
These ICs are available in SOT-23 package.
Features
Programmable Precise Output
Voltage from 2.5V to 36V High Stability under Capacitive Load Low Temperature Deviation: 4.5mV Typical Low Equivalent Full-range Temperature Coefficient with
20PPM/oC Typical Low Dynamic Output Resistance: 0.15Ω Typical Sink Current Capacity from 1mA to 100mA Low Output Noise Wide Operating Range of -40 to +125oC Lead-Free Packages: SOT-23
Totally Lead-Free; RoHS Compliant (Notes 1 & 2) Lead-Free Packages, Available in “Green” Molding Compound:
SOT-23 Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) Halogen and Antimony Free. “Green” Device (Note 3)
Pin Assignments
(Top View) ANODE 3
1 CATHODE
2 REF
SOT-23
Applications
Charger
Voltage Adapter Switching Power Supply Graphic Card Precision
Voltage Re...