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DESCRIPTION：

 

The SCT9431 are 3A synchronous buck converters with up to 36V wide input voltage range, which fully integrates an 74mΩ high-side MOSFET and a 40mΩ low-side MOSFET to provide high efficiency step-down DCDC conversion. The SCT9431 adopts peak current mode control with integrated compensation network. The SCT9431 supports the Pulse Skipping Modulation (PSM) with typical 22uA Ultra-Low Quiescent. 
The SCT9431 are optimized for Electromagnetic Interference (EMI) reduction. The converter has proprietary designed gate driver scheme to resist switching node ringing without sacrificing MOSFET turn-on and turn-off time, which further erases high frequency radiation EMI noise caused by the MOSFETs hard switching. The converter features Frequency Spread Spectrum (FSS) with a switching frequency jitter of ±6%, which reduces EMI by not allowing emitted energy to stay in any one frequency for a significant period of time. 
The SCT9431 offer output over-voltage protection, cycle-by-cycle peak current limit, and thermal shutdown protection. The device is available in a low profile QFN-9L 3mm X 2mm package.

 

 

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