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SC4520EVB Datasheet(PDF) 1 Page - Semtech Corporation |
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SC4520EVB Datasheet(HTML) 1 Page - Semtech Corporation |
1 / 12 page POWER MANAGEMENT 1 www.semtech.com SC4520 3A Step-Down Switching Regulator with Adjustable Switching Frequency Description Features Typical Application Circuit Applications Revision: December 13, 2006 The SC4520 is a current mode switching regulator with an integrated switch and an adjustable frequency with enable function. The integrated switch allows for cost- effective, low power solutions with a peak switch current of 3 amps. An adjustable high frequency of 100kHz to 600kHz provides for fast dynamic response and instantaneous duty cycle adjustment as the input varies, making the device ideal for CPE applications where the input is a wall plug power. Low shutdown current also makes the this device an excellent choice for portable applications where conserving battery life is of prime concern. Wide operating voltage range: 4.4V to 24V Integrated 3 Amp switch 100kHz to 600kHz adjustable frequency operation Current mode control Precision enable threshold SO-8 EDP package. Lead-free product, fully WEEE and RoHS compliant XDSL modems CPE equipment DC-DC point of load applications Portable equipment Digtial consumer electronics C1 VOUT D2 R3 D1 L1 C2 BST 1 IN 2 SW 3 GND 4 EN 5 FB 6 COMP 7 FSET 8 Enable C4 VIN C3 R2 R1 SC4520 Rosc |
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