SM74503_15 Datasheet, PDF (1/14 Pages) Texas Instruments – SM74503 800mA Low-Dropout Linear Regulator

SM74503
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SNVS722A – NOVEMBER 2011 – REVISED APRIL 2013
SM74503 800mA Low-Dropout Linear Regulator
Check for Samples: SM74503
FEATURES
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•2 Renewable Energy Grade
• Available in 3.3V and 5V Versions
• Space Saving SOT-223 Package
• Current Limiting and Thermal Protection
• Output Current 800mA
• Line Regulation 0.2% (Max)
• Load Regulation 0.4% (Max)
• Temperature Range −40°C to 125°C
APPLICATIONS
• Photovoltaic Electronics
• Post Regulator for Switching DC/DC Converter
• High Efficiency Linear Regulators
• Battery Charger
• Battery Powered Instrumentation
DESCRIPTION
The SM74503 is a series of low dropout voltage
regulators with a dropout of 1.2V at 800mA of load
current. It has the same pin-out as TI's industry
standard LM317.
The SM74503 is available in two fixed voltages, 3.3V
and 5V.
The SM74503 offers current limiting and thermal
shutdown. Its circuit includes a zener trimmed
bandgap reference to assure output voltage accuracy
to within ±1%.
The SM74503 series is available in SOT-223 and
PFM packages. A minimum of 10µF tantalum
capacitor is required at the output to improve the
transient response and stability.
Typical Application
Figure 1. Fixed Output Regulator
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PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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