SC4508 SEMTECH [Semtech Corporation], SC4508 Datasheet
SC4508
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SC4508 Summary of contents
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... POWER MANAGEMENT Description The SC4508 is a low voltage current mode switching regu- lator controller that drives a P-channel power MOSFET with programmable switching frequency. It can be con- figured in either buck or buck boost (inverting) convert- ers. The converters can be operated from 2.7V to 15V input voltage range. The typical operating supply current ...
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... POWER MANAGEMENT Block Diagram Marking Information Top View yyww = Date Code (Example: 0012) 2004 Semtech Corp. 5 SC4508 www.semtech.com ...
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... POWER MANAGEMENT Application Information The SC4508 is designed to control buck (step down) or buck-boost (inverting) converter with P-channel MOSFET as a switch using current mode, programmable switching frequency architecture. During steady state operation, the switch is turned on each cycle and turned off when the voltage across current sense resistor exceeds the voltage level at COMP pin set by voltage loop error amplifier ...
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... Semtech Corp. LAYOUT GUIDELINES Careful attention to layout requirements are necessary = 2V . Under this for successful implementation of the SC4508 PWM con- IN OUT troller. High switching currents are present in the appli- cation and their effect on ground plane voltage differen- tials must be understood and minimized. ...
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... SC4508 L1 10uH 6V/ 470uF/6.3V 470uF/6.3V R5 3.74K R6 1.24K TP7 TP8 ...
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... SC4508 C1 C2 47uF/16V 5 TP3 33uH -5V/0.1A C9 100uF/6.3V R5 6.04K GND R6 240 ...
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... THIS LAND PATTERN IS FOR REFERENCE PURPOSES ONLY. CONSULT YOUR MANUFACTURING GROUP TO ENSURE YOUR COMPANY'S MANUFACTURING GUIDELINES ARE MET. Semtech Corporation Power Management Products Division 200 Flynn Road, Camarillo, CA 93012 10 SC4508 DIMENSIONS MILLIMETERS MAX MIN NOM MAX - - .040 0.80 1. .002 ...