SE431

SEAWARD ELECTRONICS Adjustable Precision Shunt Regulator Features ¾ ¾ ¾ ¾ ¾ ¾ ¾ Low voltage operation (2.5V) SE431 Description The SE431 is a low voltage three terminal www.datasheet4u.com adjustable shunt regulator with a guaranteed thermal stability over applicable temperature ranges. The output voltage can be set to any value between VREF (approximately 2.5 V) to 18V with two external resistors. This device has a typical output impedance of 0.2Ω. Active output circuitry provides a very sharp turn on characteristic, making this device excellent replacement for Zener diodes in many applications. The SE431 is characterized for operation from 0oC to 105oC, and five package options (SOT-23-3, SOT-23-5, SOP-8, TO-92 and SOT-89) allow the designer the opportunity to select the proper package for their applications. Adjustable output voltage V0 = VREF to 18V Wide operating current range 120µA to 100mA Low dynamic output impedance 0.2Ω (Typ.). Trimmed bandgap design up to + 0.5%. ESD rating is 5.5KV(Per MIL-STD-883D). Available in Lead Free Packages. Application ¾ ¾ ¾ ¾ ¾ ¾ Linear Regulators Adjustable Supplies Switching Power Supplies Battery Operated Computers Instrumentation Computer Disk Drives Block Diagram Symbol Diagram Cathode Ref Cathode + Vref Anode Ref Anode All contents are subject to change without prior notice. © Seaward Electronics, Inc., 2005. www.seawardinc.com Page 1 SEAWARD ELECTRONICS Adjustable Precision Shunt Regulator SE431 Lead-Free Packa...