SS6431G Datasheet, PDF (1/11 Pages) Silicon Standard Corp. – Adjustable High-Precision Shunt Regulator

SS6431G
Adjustable High-Precision Shunt Regulator
FEATURES
Precision reference voltage.
SS6431G:
2.495V ±0.5%
Sink current capability of 200mA.
Minimum cathode current for regulation of 250µA.
Equivalent full-range temperature coefficient of
50 ppm/°C.
Fast turn-on response.
Low dynamic output impedance of 80 milliohms.
Adjustable output voltage.
Low output noise.
Space saving packages: SOT-89, SOT-23, TO-
92 and SO-8.
Pb-free lead finish (second-level interconnect).
APPLICATIONS
Linear regulators.
Adjustable supplies.
Switching power supplies.
Battery operated computers.
Instrumentation.
Computer disk drives.
TYPICAL APPLICATION CIRCUIT
V_IN
V_OUT
+
C1
R3
SS6431G
R1 ⁺
C2
DESCRIPTION
The SS6431G is a three-terminal adjustable
precision shunt regulator with guaranteed
temperature stability over the applicable ex-
tended commercial temperature range. The
output voltage may be set at any level greater
than 2.495V (V_REF) up to 30V merely by se-
lecting two external resistors that act as a
voltage divider network. This device has a
typical output impedance of 0.08Ω. Active
output circuitry provides a very sharp turn-on
characteristic, making this device an excellent
improved replacement for zener diodes in
many applications.
The precise ±0.5% reference voltage tolerance
of the SS6431G makes it possible in many
applications to avoid the use of a variable
resistor, consequently saving cost and
eliminating the drift and reliability problems
associated with it.
R2
VOUT = (1+R1/R2) VREF
Precision Regulator
2/10/2005 Rev.2.10
www.SiliconStandard.com
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