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General Description

The APL1431L is a 3-terminal low voltage adjustable precision reference with specified thermal stability over applicable commercial temperature ranges . Output voltage may be set to any value between VREF (1.24 V) and 20 V with two external resistors (see Figure 2) . When used with an photocoupler , the APL1431L is an ideal voltage reference in isolated feedback circuits for 1.24V to 12V switching mode power supplies . This device has a typical output impedance of 0.1? . Active output circuitry provides a very sharp turn-on characteristic , making the APL1431L excellent replacements for zener diodes in many applications , including on-board regulation and adjustable power supplies.

Features

? Precise Reference Voltage to 1.24V

? Guaranteed 0.5 or 1 Reference Voltage Tolerance

? Sink Current Capability , 60mA to 100mA

? Quick Turn-on

? Adjustable Output Voltage , VO = VREF to 20V

? Low Operational Cathode Current , 60mA Typical

? 0.1? Typical Output Impedance

? SOT-23-5 Packages

Applications

? Linear Regulators

? Adjustable Power Supply

? Switching Power Supply