DESCRIPTION
High frequency of operation allows for very small passive components. Current mode operation allows for fast dynamic response & instantaneous duty cycle adjustment as the input varies (ideal for CPE applications where the input is a wall plug power). applications where battery life is important. SC4517A FEATURES
Integrated 1.5 Amp switch 1.25MHz frequency of operation Current mode controller Synchronizable to higher frequency up to 2MHz 6µA low shutdown current MSOP-8 and MLPD-8 Lead-free packages. This product is fully WEEE and RoHS compliant APPLICATIONS
XDSL modems CPE equipment DC-DC point of load applications Portable equipment The low shutdown current makes it ideal for portable The SC4517A is a 1.25MHz switching regulator synchronizable to a faster frequency from 1.6MHz to 2MHz. Typical Application Circuit D1 1 VIN Enable C3 2 5 8 BST IN SW 3 6 7 C1 L1 VOUT R1 SC4517AXX EN SYNC FB COMP GND 4 D2 R2 C2 C4 R3 Revision: December 13, 2006 1 SC4517A POWER MANAGEMENT ABSOLUTE MAXIMUM RATINGS
Exceeding the specifications below may result in permanent damage to the device, or device malfunction.
Semtech Corporation
