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DESCRIPTION：

 

The SCT2650B is 5A buck converter with wide input voltage, ranging from 4.3V to 60V, which integrates an 130mΩ high-side MOSFET. The SCT2650B, adopting the peak current mode control, supports the Pulse Skipping Modulation (PSM) which assists the converter on achieving high efficiency at light load or standbycondition. The switching frequency is programmable from 100kHz to 2.2MHz with two setting modes, resistor setting frequency mode and the clock synchronization mode,to optimizes either the power efficiency or the external components’ sizes. The SCT2650B allows power conversion from high input voltage to low output voltage with a minimum 100ns on-time of high-side MOSFET. The SCT2650B is an Electromagnetic Interference (EMI) friendly buck converter with implementing optimized design for EMI reduction. The SCT2650B features Frequency Spread Spectrum FSS with ±6% jittering span and modulation rate 1/512 of switching frequency to reduce the conducted EMI.The device offers fixed 4ms soft start to prevent inrush current during the startup of output voltage ramping.The SCT2650B supports monotonic start with prebiased output. The SCT2650B features external loop compensation to provide the flexibility to optimize either loop stability or loop response.The SCT2650B provides cycle-by-cycle current limit, hiccup mode for over current protection, thermal shutdown protection, output over-voltage protection and input voltage under-voltage protection. The device is available in an 8-pin ESOP-8 package.

 

 

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