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MIC39102 Datasheet(PDF) 1 Page - Micrel Semiconductor |
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MIC39102 Datasheet(HTML) 1 Page - Micrel Semiconductor |
1 / 12 page August 2005 1 M9999-082505-B MIC39100/39101/39102 Micrel MIC39100/39101/39102 1A Low-Voltage Low-Dropout Regulator General Description TheMIC39100,MIC39101,andMIC39102are1Alow-dropout linearvoltageregulatorsthatprovidelow-voltage,high-current outputfromanextremelysmallpackage.UtilizingMicrel’spro- prietary Super βeta PNP™ pass element, the MIC39100/1/2 offers extremely low dropout (typically 410mV at 1A) and low ground current (typically 11mA at 1A). The MIC39100 is a fixed output regulator offered in the SOT-223 package. The MIC39101 and MIC39102 are fixed and adjustable regulators, respectively, in a thermally en- hanced power 8-lead SOIC package. The MIC39100/1/2 is ideal for PC add-in cards that need to convert from standard 5V to 3.3V, 3.3V to 2.5V or 2.5V to 1.8V.Aguaranteed maximum dropout voltage of 630mV over all operating conditions allows the MIC39100/1/2 to provide 2.5V from a supply as low as 3.13V and 1.8V from a supply as low as 2.43V. The MIC39100/1/2 is fully protected with overcurrent limit- ing, thermal shutdown, and reversed-battery protection. Fixed voltages of 5.0V, 3.3V, 2.5V, and 1.8V are available on MIC39100/1 with adjustable output voltages to 1.24V on MIC39102. For other voltages, contact Micrel. Typical Applications Features • Fixed and adjustable output voltages to 1.24V • 410mV typical dropout at 1A Ideal for 3.0V to 2.5V conversion Ideal for 2.5V to 1.8V conversion • 1A minimum guaranteed output current • 1% initial accuracy • Low ground current • Current limiting and thermal shutdown • Reversed-battery protection • Reversed-leakage protection • Fast transient response • Low-profile SOT-223 package • Power SO-8 package Applications • LDO linear regulator for PC add-in cards • PowerPC™ power supplies • High-efficiency linear power supplies • SMPS post regulator • Multimedia and PC processor supplies • Battery chargers • Low-voltage microcontrollers and digital logic Super βeta PNP is a trademark of Micrel, Inc. Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com IN 2.5V VIN 3.3V 10µF tantalum OUT GND MIC39100 2.5V/1A Regulator IN R1 100k 2.5V Error Flag Output VIN 3.3V 10µF tantalum EN OUT FLG GND MIC39101 ENABLE SHUTDOWN 2.5V/1A Regulator with Error Flag IN R1 1.5V VIN 2.5V 10µF tantalum R2 EN OUT ADJ GND MIC39102 ENABLE SHUTDOWN 1.5V/1A Adjustable Regulator |
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