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MIC5219-3.0BM5 Datasheet(PDF) 1 Page - Micrel Semiconductor |
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MIC5219-3.0BM5 Datasheet(HTML) 1 Page - Micrel Semiconductor |
1 / 13 page April 2001 1 MIC5219 MIC5219 Micrel Typical Applications MIC5219 500mA-Peak Output LDO Regulator General Description The MIC5219 is an efficient linear voltage regulator with high peak output current capability, very low dropout voltage, and better than 1% output voltage accuracy. Dropout is typically 10mV at light loads and less than 500mV at full load. The MIC5219 is designed to provide a peak output current for startup conditions where higher inrush current is demanded. It features a 500mA peak output rating. Continuous output current is limited only by package and layout. The MIC5219 can be enabled or shut down by a CMOS or TTL compatible signal. When disabled, power consumption drops nearly to zero. Dropout ground current is minimized to help prolong battery life. Other key features include reversed- battery protection, current limiting, overtemperature shut- down, and low noise performance with an ultra-low-noise option. The MIC5219 is available in adjustable or fixed output volt- ages in space-saving SOT-23-5 and MM8™ 8-lead power MSOP packages. For higher power requirements see the MIC5209 or MIC5237. Features • 500mA Output current capability • SOT-23-5 package - 500mA peak • MSOP-8 package - 500mA continuous • Low 500mV maximum dropout voltage at full load • Extremely tight load and line regulation • Tiny SOT-23-5 and MM8™ power MSOP-8 package • Ultra-low-noise output • Low temperature coefficient • Current and thermal limiting • Reversed-battery protection • CMOS/TTL-compatible enable/shutdown control • Near-zero shutdown current Applications • Laptop, notebook, and palmtop computers • Cellular telephones and battery-powered equipment • Consumer and personal electronics • PC Card V CC and VPP regulation and switching • SMPS post-regulator/dc-to-dc modules • High-efficiency linear power supplies 1 2 3 4 8 7 6 5 MIC5219-5.0BMM 2.2µF tantalum VOUT 5V VIN 6V ENABLE SHUTDOWN 470pF 5V Ultra-Low-Noise Regulator 15 2 3 4 2.2µF tantalum 470pF VOUT 3.3V MIC5219-3.3BM5 VIN 4V ENABLE SHUTDOWN 3.3V Ultra-Low-Noise Regulator Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 944-0970 • http://www.micrel.com |
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