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MIC5159 Datasheet(PDF) 1 Page - Micrel Semiconductor |
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MIC5159 Datasheet(HTML) 1 Page - Micrel Semiconductor |
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1 / 23 page  MIC5159 Programmable Current Limit µCap LDO Regulator Controller IttyBitty is a registered 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 June 2006 M9999-062706 General Description Micrel’s MIC5159 is a precision-voltage regulator controller. Used with an external P-Channel MOSFET, the MIC5159 forms a two-chip low-dropout regulator capable of driving a wide range of output currents. The MIC5159 operates from an input of 1.65V to 5.5V. The low input voltage allows the MIC5159 to operate off of high power 1.8V rails to generate lower voltages such as 1.5V. Features of the MIC5159 include enable input and current- limit protection. As a µCap design, the MIC5159 is stable with ceramic output capacitors. The MIC5159 is packaged in the IttyBitty ® SOT-23-6, and is offered in fixed and adjustable output voltages. Junction temperature range of the MIC5159 is from –40°C to +125°C. Features • Fast transient response • Input voltage range: V IN 1.65V to 5.5V • ±1.0% initial output tolerance • Fixed 1.8V or adjustable output voltage down to 1.25V • Stable with ceramic output capacitor • Capable up to 10A • Excellent line and load regulation specifications • Logic-controlled shutdown • Programmable current limit • Current-limit protection • IttyBitty® SOT-23-6 package • Available temperature range:–40°C to +125°C • Applications • Ultra-high current, ultra-low dropout voltage regulator • High-efficiency linear power supplies • Low-voltage distributed power • Fixed telecom • Multimedia and PC power supplies • Battery chargers • Low-voltage DSP, microprocessor and microcontroller power supplies Typical Application GATE EN FB VIN IN IS VOUT GND U1 MIC5159BM6/YM6 Q1–Q4 SUB15P01–52 × 4 R1 5 1 3 GND C1 R2 GND C1 C1 Adjustable Output Voltage VIN = 3.3V VOUT = 2.5V COUT = 200µF 10A 100mA |
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