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SC4612STRT Datasheet(PDF) 1 Page - Semtech Corporation |
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SC4612STRT Datasheet(HTML) 1 Page - Semtech Corporation |
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1 / 24 page  1 www.semtech.com SC4612 Wide Input Range High Performance Synchronous Buck Switching Controller POWER MANAGEMENT Description Features Applications Typical Application Circuit Wide voltage range, V DD = 28V, VPWRIN = 40V Internally regulated DRV Output voltage as low as 0.5V 1.7A gate drive capability Asynchronous start up mode Low side R DS-ON sensing with hiccup mode current limit Programmable current limit Programmable frequency up to 1.2 MHz Available in MLPD-12 and SOIC-14 Lead-free packages. This product is fully WEEE and RoHS compliant SC4612 is a high performance synchronous buck controller that can be configured for a wide range of applications. The SC4612 utilizes synchronous rectified buck topology where high efficiency is the primary consideration. SC4612 is optimized for applications requiring wide input supply range and low output voltages down to 500mV. SC4612 implements an asynchronous soft-start mode, which keeps the lower side MOSFET off during soft-start, a desired feature when a converter turns on into a preset external voltage or pre-biased output voltage. With the lower MOSFET off, the external bus is not discharged, preventing any disturbances in the start up slope and any latch-up of modern day ASIC circuits. SC4612 comes with a rich set of features such as regulated DRV supply, programmable soft-start, high current gate drivers, internal bootstrapping for driving high side N-channel MOSFET, shoot through protection, R DS-ON sensing with hiccup over current protection, and asynchronous start up with over current protection. Distributed power architectures Telecommunication equipment Servers/work stations Mixed signal applications Base station power management Point of use low voltage high current applications Revision: January 31, 2007 Q1 Q2 L1 C8 C10 + _ + _ Vin Vout R3 R4 C5 R1 C1 C9 C2 R5 C3 D1 C7 C4 R2 R6 C6 ILIM 1 PHASE 12 OSC 2 SS/EN 3 FB 5 VDD 6 GND 7 DL 8 DRV 9 BST 10 DH 11 EAO 4 U1 SC4612MLP |
Similar Part No. - SC4612STRT |
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Similar Description - SC4612STRT |
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