SE431D Datasheet, PDF (1/8 Pages) Seaward Electronics Inc. – Adjustable Precision Shunt Regulator

Description
The SE431D is a low voltage three terminal
adjustable shunt regulator with a guaranteed
thermal stability over applicable temperature
ranges. The output voltage can be set to any value
between V_REF (approximately 2.5 V) to 18V with two
external resistors. This device has a typical output
impedance of 0.08Ω. Active output circuitry
provides a very sharp turn on characteristic, making
this device excellent replacement for Zener diodes
in many applications.
The SE431D is characterized for operation
from -40^oC to 85^oC, 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.
Features
¾ Low voltage operation (2.5V)
¾ Adjustable output voltage V₀ = V_REF to 18V
¾ Wide operating current range 150μA to 80mA
¾ Low dynamic output impedance 0.08Ω (Typ.).
¾ Trimmed bandgap design up to + 0.5%.
¾ ESD rating is 6KV(Per MIL-STD-883D).
¾ RoHS Compliant and 100% Lead (Pb)-Free.
Application
¾ Linear Regulators
¾ Adjustable Supplies
¾ Switching Power Supplies
¾ Battery Operated Computers
¾ Instrumentation
¾ Computer Disk Drives
Block Diagram
Cathode
Ref
+
-
Vref
Anode
Symbol Diagram
Cathode
Ref
Anode
Revision 12/4/2008
All contents are subject to change without prior notice.
© Seaward Electronics, Inc., 2006. • www.seawardinc.com.cn • Page 1