SS431 Datasheet, PDF (1/7 Pages) Silicon Standard Corp. – Adjustable Precision Shunt Regulator

SS431/G
Adjustable Precision Shunt Regulator
FEATURES
Low voltage operation (2.5V)
Adjustable output voltage from VO = V REF to 18V
Wide operating current range from 0.4mA to 100mA
Low dynamic output impedance 0.5Ω max.
ESD rating is 5.5kV (per MIL-STD 883D)
Pb-free lead finish available.
APPLICATIONS
Linear Regulators
Adjustable Supplies
Switching Power Supplies
Battery Operated Computers
Instrumentation
Computer Disk Drives
PIN CONFIGURATION
SOT-23 (Top view)
Anode
2 Cathode
3
1 Reference
SOT-89 (Top view)
3
Cathode
2
Anode
1
Reference
DESCRIPTION
The SS431 is a low-voltage three-terminal adjustable shunt
regulator with a guaranteed thermal stability over the applicable
temperature range. The output voltage can be set to any value
between VREF (approximately 2.5V) to 18V with two external
resistors (see application circuit). This device has a typical output
impedance of 0.2 ohms. Active output circuitry provides very sharp
turn-on characteristics, making this device an excellent
replacement for Zener diodes in many applications.
The SS431 is characterized for operation from 0°C to 105°C,
and three package options (SOT-23, SOT-89, and TO-92) allow
the designer the opportunity to select the proper package for his
application. The SS431 is available with a Pb-free lead finish
- order as SS431Gxx.
BLOCK DIAGRAM
Cathode
Ref
+
-
Vref
Anode
TO-92 (Top view)
3 Cathode
2 Anode
1 Reference
SYMBOL
Cathode
Ref.
Anode
Rev.2.02 3/11/2004
www.SiliconStandard.com
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