• Wide Input Range: 3.8V-36V

• Up to 5A Continuous Output Current

• 0.8V ±1% Feedback Reference Voltage

• Integrated 45mΩ High-Side and 20mΩ Low-Side

  Power MOSFETs

• Pulse Skipping Mode PSM with 25uA Quiescent

  Current in Sleep Mode

• 100ns Minimum On-time

• Programmable Soft-start Time

• Fixed Switching Frequency 570kHz

• Frequency Spread Spectrum FSS Modulation for

  EMI Reduction

• Precision Enable Threshold for Programmable

  Input Voltage Lock Out (UVLO) Threshold and

  Hysteresis

• Low Dropout Mode Operation

• Derivable Inverting Voltage Regulator

• Over-voltage and Over Temperature Protection

• Available in an ESOP-8 Package

The SCT2451 is 5A synchronous buck converters with

wide input voltage, ranging from 3.8V to 36V, which

integrates a 45mΩ high-side MOSFET and a 20mΩ

low-side MOSFET. The SCT2451, adopting the peak

current mode control, supports the Pulse Skipping

Modulation (PSM) with typical 25uA low quiescent

current which assists the converter on achieving high

efficiency at light load or standby condition.

The SCT2451 features programmable soft start time

with 570kHz switching frequency. The converter allows

power conversion from high input voltage to low output

voltage with a minimum 100ns on-time of high-side

MOSFET. It also supports Low Drop-Out LDO

operation at low voltage difference from input to output

condition.

The SCT2451 is an Electromagnetic Interference (EMI)

friendly buck converter with implementing optimized

design for EMI reduction. The SCT2451 features

Frequency Spread Spectrum FSS with ±6% jittering

span of the 570kHz switching frequency and

modulation rate 1/512 of switching frequency to reduce

the conducted EMI.

The SCT2451 offers cycle-by-cycle current limit and

hiccup over current protection, thermal shutdown

protection, output over-voltage protection and input

voltage under-voltage protection. The device is

available in an 8-pin thermally enhanced SOP-8

package.