SC4612H_09 Datasheet, PDF (1/18 Pages) Semtech Corporation – 40V Synchronous Buck Controller

SC4612H
40V Synchronous Buck Controller
POWER MANAGEMENT
Features
 Wide input voltage range, 4.75V to 40V
 Internally regulated DRV
 1.7A gate drive capability
 Low side RDS-ON sensing with hiccup OCP
 Programmable current limit
 Programmable frequency up to 1.2 MHz
 Overtemperature protected
 Pre-bias startup
 Reference accuracy ±1%
 Available in MLPD-12 4 x 3 and SOIC-14 Pb-free pack-
ages. This product is fully WEEE and RoHS compliant
Applications
 Distributed power architectures
 Telecommunication equipment
 Servers/work stations
 Mixed signal applications
 Base station power management
 Point of use low voltage high current applications
Description
The SC4612H is a high performance synchronous buck
controller that can be configured for a wide range of
applications. The SC4612H utilizes synchronous rectified
buck topology where high efficiency is the primary con-
sideration. SC4612H can be used over a wide input voltage
range with output voltage adjustable within limits set by
the duty cycle boundaries.
SC4612H comes with a rich set of features such as regu-
lated DRV supply, programmable soft-start, high current
gate drivers, shoot through protection, R_DS(ON) sensing with
hiccup over current protection.
Typical Application Circuit
March 24, 2009
© 2008 Semtech Corporation