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D01605T-472 Datasheet(PDF) 4 Page - Monolithic Power Systems |
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D01605T-472 Datasheet(HTML) 4 Page - Monolithic Power Systems |
4 / 8 page MP2105 – 1MHz 800mA SYNCHRONOUS STEP-DOWN CONVERTER MP2105 Rev. 1.3 www.MonolithicPower.com 4 5/11/2006 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2006 MPS. All Rights Reserved. TM TYPCIAL PERFORMANCE CHARACTERISTICS (continued) VIN = 3.3V, VOUT = 1.8V, L1 = 4.7µH, C1 = 4.7µF, C3 = 10µF, TA = +25°C, unless otherwise noted. MP2105-TPC09 Short Circuit Protection (No Load) MP2105-TPC07 Heavy Load Operation IOUT = 800mA MP2105-TPC10 Short Circuit Recovery (No Load) MP2105-TPC08 Startup from Shutdown VOUT 10mV/div. IL 0.2A/div. IL=0 SW 2V/div. VOUT 1V/div. IL 0.5A/div. VOUT 1V/div. IL 0.5A/div. VEN 2V/div. VOUT 1V/div. IL 0.5A/div. PIN FUNCTIONS Pin # Name Description EN 1 Regulator Enable Control Input. Drive EN above 1.5V to turn on the MP2105. Drive EN below 0.3V to turn it off (shutdown current < 0.1µA). GND 2 Ground SW 3 Power Switch Output. Inductor connection to drains of the internal PFET and NFET switches. IN 4 Supply Input. Bypass to GND with a 2.2µF or greater ceramic capacitor. FB 5 Feedback Input. Connect FB to the center point of the external resistor divider. The feedback threshold voltage is 0.6V. |
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