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RT7263B Datasheet(PDF) 1 Page - Richtek Technology Corporation |
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RT7263B Datasheet(HTML) 1 Page - Richtek Technology Corporation |
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1 / 15 page  RT7263B ® DS7263B-01 September 2012 www.richtek.com 1 Copyright 2012 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. © 3A, 21V 500kHz Synchronous Step-Down Converter General Description The RT7263B is a synchronous step-down regulator with an internal power MOSFET. It achieves 3A of continuous output current over a wide input supply range with excellent load and line regulation. Current mode operation provides fast transient response and eases loop stabilization. Fault condition protection includes cycle-by-cycle current limiting and thermal shutdown. An adjustable soft-start reduces the stress on the input source at startup. The RT7263B requires a minimal number of readily available external components, providing a compact solution. Features Wide Input Range : 4.5V to 21V Adjustable Output from 0.603V to 15V 3A Output Current 120m Ω Ω Ω Ω Ω/40mΩ Ω Ω Ω Ω Internal Power MOSFET Switch Internal Compensation Minimizes External Parts 500kHz Fixed Switching Frequency Synchronized External Clock from 300kHz to 2MHz Adjustable Soft-Start Cycle-by-Cycle Over Current Limit Thermal Shutdown Protection Small 14-Lead WDFN Package RoHS Compliant and Halogen Free Applications Distributive Power Systems Battery Charger DSL Modems Pre-Regulator for Linear Regulators Ordering Information Note : Richtek products are : RoHS compliant and compatible with the current require- ments of IPC/JEDEC J-STD-020. Suitable for use in SnPb or Pb-free soldering processes. Package Type QW : WDFN-14L 4x3 (W-Type) RT7263B Lead Plating System Z : ECO (Ecological Element with Halogen Free and Pb free) Simplified Application Circuit Marking Information 10 : Product Code YMDNN : Date Code 10 YM DNN VIN VCC SYNC VIN RT7263B CIN GND EN AGND ON/OFF SYNC BOOT FB SW L R1 R2 VOUT CBOOT COUT SS RT CSS CC |
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