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RT8287A

Richtek
Part Number RT8287A
Manufacturer Richtek
Description 500kHz Synchronous Step-Down Converter
Published Jan 28, 2013
Detailed Description ® RT8287A 4A, 21V 500kHz Synchronous Step-Down Converter General Description The RT8287A is a synchronous step-down reg...
Datasheet PDF File RT8287A PDF File

RT8287A
RT8287A

Overview
® RT8287A 4A, 21V 500kHz Synchronous Step-Down Converter General Description The RT8287A is a synchronous step-down regulator with an internal power MOSFET.
It achieves 4A 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 RT8287A requires a minimal number of readily available external components, providing a compact solution.
Features z z z z 4A Output Current Adjustable Soft-Start 120mΩ/40mΩ Internal Power MOSFET Switch Internal Compensation Minimizes External Parts Count Fixed 500kHz Frequency Thermal Shutdown Protection Cycle-by-Cycle Over Current Protection Wide 4.
5V to 21V Operating Input Range Adjustable Output from 0.
808V to 15V Small 14-Lead WDFN Package RoHS Compliant and Halogen Free z z z z z z z Ordering Information RT8287A Package Type QW : WDFN-14L 4x3 (W-Type) Lead Plating System Z : ECO (Ecological Element with Halogen Free and Pb free) Note : Richtek products are : ` Applications z z z z Distributive Power Systems Battery Charger DSL Modems Pre-Regulator for Linear Regulators http://www.
DataSheet4U.
net/ Pin Configurations (TOP VIEW) VIN SW SW SW SW BOOT EN 1 2 3 4 5 6 7 14 13 RoHS compliant and compatible with the current requirements of IPC/JEDEC J-STD-020.
Suitable for use in SnPb or Pb-free soldering processes.
` GND 15 12 11 10 9 8 Marking Information 01 : Product Code AGND GND GND VCC SS PGOOD FB WDFN-14L 4x3 01 YM DNN YMDNN : Date Code Copyright © 2012 Richtek Technology Corporation.
All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DS8287A-03 June 2012 www.
richtek.
com 1 datasheet pdf - http://www.
DataSheet4U.
net/ RT8287A Typical Application Circuit VIN CIN 22µF PGOOD R3 100k CC 0.
1µF ON...


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