APL1431L

APL1431L Low Voltage Adjustable Precision Shunt Regulator Features www.DataSheet4U.com 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 switchingmode power supplies . This device has a typical output impedance of 0.1Ω . 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 . AN O DE RE F 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 0.1Ω Typical Output Impedance SOT-23-5 Packages Applications Linear Regulators Adjustable Power Supply Switching Power Supply 5 1 2 4 3 NC NC C A T H O DE Symbol REF Anode Cathode Functional Diagram C athode R EF + − V REF Anode ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and advise customers to obtain the latest version of relevant information to verify befo...