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SPX431LJ
Low Voltage Adjustable
Precision Shunt Regulator
Features
Wide Programmable Precise Output Voltage from
1.24V to 18V
High Stability under Capacitive Load
Low Temperature Deviation: 3mV Typical
Low Equivalent Full-Range Temperature Coefficient:
20PPM/
o
C Typical
Low Dynamic Output Resistance: 0.05 Typical
High Sink Current Capacity from 55 A to 100 mA
Low Output Noise
Wide Operating Range of -40 to 125
o
C
Available in RoHS Compliant, Lead Free Packaging
M Package
(SOT-)
2
3
REF
ANODE CATHODE
Applications
Graphics Card
PC Motherboard
Voltage Adapter
Switching Power Supply
Charger
General Description
The SPX431LJ series ICs are low voltage three-terminal adjustable regulators with guaranteed thermal sta-
bility over a full operation range. These ICs feature sharp turn-on characteristics, low temperature coefficient
and low output impedance, which make them ideal substitutes for Zener diodes in applications such as switch-
ing power supply, charger, motherboard and other adjustable regulators. The output voltage can be set to any
value between 1.24V and 18V with two external resistors. The SPX431LJ precision reference is offered in
two bandgap tolerances: 0.5% and 1%. These ICs are available in TO-92 and SOT-89
packages.
TO-2
SOT-
Figure . Package Types of SPX43LJ
Date: 7/26/06 Rev C
SPX43LJ Low Voltage Adjustable Precision Shunt Regulator
漏 2006 Sipex Corporation