MIC5237_07 Datasheet, PDF (1/9 Pages) Micrel Semiconductor – 500mA Low-Dropout Regulator

MIC5237
500mA Low-Dropout Regulator
General Description
Features
The MIC5237 is a general-purpose low-dropout regulator
capable of 500mA output current with better than 3%
output voltage accuracy. Using Micrel’s proprietary Super
ßeta PNP^® process with a PNP pass element, these
regulators feature less than 300mV dropout voltage and
typically 8mA ground current at full load.
Designed for applications that require moderate current
over a broad input voltage range, including hand-held and
battery-powered devices, the MIC5237 is intended for
applications that can tolerate moderate voltage drop at
higher current.
Key features include low ground current to help prolong
battery life, reversed-battery protection, current limiting,
over-temperature shutdown, and thermally efficient
packaging. The MIC5237 is available in fixed output
voltages only.
For space-critical applications and improved performance,
see the MIC5209 and MIC5219. For output current
requirements up to 750mA, see the MIC2937.
• Guaranteed 500mA output over the full operating
temperature range
• Low 300mV typical dropout voltage at full load
• Extremely tight load and line regulation
• Current and thermal limiting
• Reversed-battery protection
• TO-220 and TO-263 packages
• Low temperature coefficient
• No-load stability
• Low-noise output
Applications
• Portable and laptop computers
• Desktop computer
• Battery chargers
• SMPS post-regulator/dc-to-dc modules
Data sheets and support documentation can be found on • Consumer and personal electronics
Micrel’s web site at: www.micrel.com.
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Typical Application
Super βeta PNP is a registered trademark of Micrel, Inc.
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel [phone] • fax + 1 [phone] • http://www.micrel.com
September 2007
M9999-090607-C