AN431 Datasheet | BCD Semiconductor

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: 4.5m V Typical - Low Equivalent Full-range Temperature Coefficient with 20PPM/o C Typical - Low Dynamic Output Resistance: 0.15Ω Typical - Sink Current Capacity from 1m A to 100m A - Low Output Noise - Wide Operating Range of -40 to +125o C - Lead-Free Packages: SOT-23 - Totally Lead-Free; Ro HS pliant (Notes 1 & 2) - Lead-Free Packages, Available in “Green” Molding pound: SOT-23 - Totally Lead-Free & Fully Ro HS pliant (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 Reference Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (Ro HS) & 2011/65/EU (Ro HS 2) pliant. 2. See http://.diodes./quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and Lead-free. 3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and <1000ppm antimony pounds. Typical Applications Circuit R3 VIN R1 VREF R2 VOUT AN431 VOUT=(1+R1/R2)-...