• Input Voltage Range: 3V-17V

• Output Voltage Range: 0.6V-10V

• Up to 6A Continuous Output Current

• 100μA Quiescent Current

• 0.6V ±1% Feedback Reference Voltage

• Integrated 42mΩ High-Side and 23mΩ Low-Side Power MOSFETs

• 550kHz Switching Frequency

• Fixed 1.5ms Soft-start Time

• PFM Operation at Light Load (SCT2263)

• FCCM Operation at Light Load (SCT2264)

• Cycle-by-cycle Current Limit

• Input Under-voltage Lockout

• Output Under-voltage Protection

• Over Temperature Protection

• Available in a TSOT23-6L Package

The SCT226x is a fully integrated high efficiency synchronous step-down DCDC converter capable of delivering 6A current. The devices operate over a wide input voltage range from 3V to 17V and fully integrate high-side power MOSFETs and synchronous MOSFETs with low Rdson to minimize the conduction loss. The SCT226x adopts Constant On-Time (COT) control architecture to achieve fast load transient responses for step-down applications. With 550kHz fixed switching frequency, low output voltage ripple, small external inductor are achieved. The SCT2263 operates in PFM mode, which maintains high efficiency during light load operation.

The SCT2264 operates in FCCM mode, which achieves smaller output voltage ripple compared with PFM at light load. It includes full protection features, such as over current protection, output under-voltage protection, input under-voltage lockout, and thermal shutdown.

The SCT226x requires a minimal number of external components and is available in a space-saving TSOT23-6L package.


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