SC431
SC431 is ADJUSTABLE SHUNT REGULATOR manufactured by SEMTECH.
DESCRIPTION
The SC431 is a three terminal adjustable shunt regulator with thermal stability guaranteed over temperature. The output voltage can be adjusted to any value from 2.5V (VREF) to 36V with two external resistors. The SC431 has a typical dynamic output impedance of 0.25Ω. Active output circuitry provides a very sharp turn on characteristic, making the SC431 an excellent replacement for zener diodes. The SC431 shunt regulator is available in three voltage tolerances (0.5%, 1.0% and 2.0%) and three package options (SOT-23-3, SO-8 and TO-92). The three voltage tolerances allow the designer the opportunity to select the proper cost/tolerance for their application.
Features
- Wide operating current range 100µA to 150m A
- Low dynamic output impedance 0.25 Ω typ.
- Trimmed bandgap design + 0.5%
- Alternate for TL431, LM431 & AS431 APPLICATIONS
- Linear Regulators
- Adjustable Supplies
- Switching Power Supplies
- Battery Operated puters
- Instrumentation
- puter Disk Drives
PIN CONFIGURATIONS
SOT-23 -3 Lead (Top View)
BLOCK DIAGRAM
SOIC 8 Lead (Top View)
SYMBOL DIAGRAM
TO-92 (Top View)
1 © 1998 SEMTECH CORP. 652 MITCHELL ROAD NEWBURY PARK CA 91320
ADJUSTABLE SHUNT REGULATOR
April 13, 1998
ABSOLUTE MAXIMUM RATINGS
Parameter Cathode Voltage Continous Cathode Current Reference Input Current Operating Junction Temperature Range Storage Temperature Range Thermal Resistance TO-92 SO-8 SOT-23 Power Dissipation at TA = 25°C TO-92 SO-8 SOT-23 Lead Temperature (Soldering) 10 seconds Symbol VZ IZ IREF TJ TSTG θJA Maximum 37 150 10 -40 to +150 -65 to +150 160 175 410 0.78 0.71 0.30 260 Units V m A m A °C °C °C/W
TLEAD
°C
ORDERING INFORMATION
PACKAGE 0.5% SO-8
(1) (1)
TOLERANCE 1.0%...
