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MIC5231-3.3BM5 Datasheet(PDF) 1 Page - Micrel Semiconductor |
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MIC5231-3.3BM5 Datasheet(HTML) 1 Page - Micrel Semiconductor |
1 / 8 page June 2000 1 MIC5231 MIC5231 Micrel General Description The MIC5231 µCap low-dropout voltage regulator is intended for low-output-current biasing applications. It features ex- tremely low ground current, not greater than 4 µA under all load and temperature conditions, making it efficient and ideal for keep-alive applications in devices such as notebook computers. The MIC5231 offers better than 2% initial accuracy and low dropout (typically 150mV at 10mA output current). An output capacitor is not required for stable operation, decreasing cost and board space. Tiny ceramic chip capacitors may be used to improve transient response. The MIC5231 also features a control pin which allows the regulator to be shut down when not required. Its shutdown- state draws zero current, benefitting battery-powered appli- cations. The MIC5231 is available in fixed output voltages of 2.75V, 3.0V, 3.3V and 5V in the small SOT-23-5 IttyBitty™ package. Contact Micrel for other voltage options. MICREL INC. 1849 FORTUNE DRIVE SAN JOSE, CA 95131 USA TEL + 1 (408) 944-0800 FAX + 1 (408) 944-0970 Typical Application IN EN OUT MIC5231-5.0BM5 GND VIN 6V VOUT 5V 5V Linear Regulator Application Ordering Information Part Number Marking Voltage Temperature Range Package MIC5231-2.75BM5 LM2H 2.75V –40 °C to +125°C SOT-23-5 MIC5231-3.0BM5 LM30 3.0V –40 °C to +125°C SOT-23-5 MIC5231-3.3BM5 LM33 3.3V –40 °C to +125°C SOT-23-5 MIC5231-5.0BM5 LM50 5.0V –40 °C to +125°C SOT-23-5 Features • Extremely low quiescent current— only 0.65 µA • No output capacitor requirement • Stable with ceramic or tantalum capacitors • IttyBitty™ SOT-23-5 surface-mount package • 10mA output drive • Low 150mV at 10mA dropout voltage • Tight load and line regulation • Low temperature coefficient • Logic-level enable input Applications • Real time clocks • SRAM backup • Cellular telephones • Laptop, notebook and palmtop computers • Battery-powered equipment • Bar code scanners • SMPS post-regulator and dc-to-dc modules MIC5231 Micropower µCap LDO Regulator Preliminary Information IttyBitty is a trademark of Micrel, Inc. |
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