Description
The SC4508A is a low voltage current mode switching regulator controller that drives a P-channel power MOSFET with programmable switching frequency. It can be configured in either buck or buck boost (inverting) con verters. The converters can be operated from 2.7V to 15V input voltage range.
Features
ÂWide input voltage range 2.7V to 15V
ÂProgrammable output voltage
ÂProgrammable switching frequency up to 1.5MHz
ÂBuck or buck boost (inverting) configuration
ÂCurrent mode control with slope compensation
ÂVery low quiescent current in shutdown mode
ÂAccessible reference voltage
ÂHiccup mode after 32 cycle-by-cycle OCP
Â4mm x 4mm MLPQ-12 lead free package. This product is fully WEEE and RoHS compliant
Applications
ÂLow power point of use converters
ÂSingle or multiple output low power converters
ÂPositive and/or negative output voltage
ÂDSL cards
ÂGraphic cards
ÂI/O cards
ÂNegative bias supplies
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