AZ431L LOW VOLTAGE (1.24V) ADJUSTABLE PRECISION SHUNT REGULATOR Description Pin Assignments The AZ431L series ICs are low voltage three-terminal adjustable regulators with guaranteed thermal stability over a full operation (Top View) (Top View) range. These ICs feature sharp turn-on characteristics, low temperature coefficient and low output impedance, which make them 3 CATHODE 3 CATHODE ideal substitutes for Zener diodes in applications such as switching power supply, charger, motherboard and other adjustable regulators. 2 ANODE 2 ANODE The output voltage can be set to any value between 1.24V and 18V with two external resistors. 1 REF REF 1 The AZ431L precision reference is offered in two voltage tolerance: TO92 (Bulk Packing) TO92 (Ammo Packing) 0.5% and 1.0%. (Top View) (Top View) These ICs are available in 4 packages: TO92 (bulk or ammo packing), SOT23, SOT25 and SOT89. ANODE 3 NC 1 5 ANODE Features Wide Programmable Precise Output Voltage from 1.24V to 18V * 2 (Note 4) High Stability under Capacitive Load CATHODE 3 4 REF Low Temperature Deviation: 3mV Typical 1 2 Low Equivalent Full-range Temperature Coefficient: 20PPM/C REF CATHODE Typical SOT23 SOT25 Low Dynamic Output Resistance: 0.05 Typical Note 4: *Pin 2 is attached to substrate and must be connected to ANODE or High Sink Current Capacity from 0.1mA to 100mA open. Low Output Noise Wide Operating Range of -40 to +125C (Top View) (Top View) Lead-Free Packages: TO92, SOT23, SOT25, SOT89 Totally Lead-Free RoHS Compliant (Notes 1 & 2) Lead-Free Packages, Available in Green Molding Compound: TO92, SOT23, SOT25, SOT89 Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) Halogen and Antimony Free. Green Device (Note 3) 1 2 3 1 2 3 REF ANODE CATHODE REF ANODE CATHODE Applications SOT89 (Option 1) SOT89 (Option 2) Graphic Card PC Motherboard Voltage Adapter Switching Power Supply Charger Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant. 2. See AZ431L Typical Applications Circuit Shunt Regulator High Current Shunt Regulator Current Source or Current Limit 2 of 20 AZ431L March 2018 Diodes Incorporated www.diodes.com Document number: DS36801 Rev. 4 - 2