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SCT2A21 Datasheet Constant On-time Synchronous Buck Converter

Manufacturer: SCT

Overview: 芯洲科技 Silicon Content Technology SCT2A21 Rev.1.0 4.5V-100V Vin, 1A, Constant On-Time Synchronous BUCK.

Datasheet Details

Part number SCT2A21
Manufacturer SCT
File Size 1.42 MB
Description Constant On-Time Synchronous BUCK Converter
Datasheet SCT2A21-SCT.pdf

General Description

The SCT2A21 is a 1A synchronous buck converters with wide input voltage, ranging from 4.5V to 100V, which integrates an 530mΩ high-side MOSFET and a 220mΩ low-side MOSFET.

The SCT2A21, adopting the constant-on time (COT) mode control, supports the PFM mode with typical 150uA low quiescent current which assists the converter on achieving high efficiency at light load or standby condition.

Applying an external diode on VCC pin from converter output, the quiescent current can be further reduced.

Key Features

  • Wide Input Range: 4.5V-100V.
  • 1A Continuous Output Current.
  • Integrated 530mΩ High-Side and 220mΩ Low- Side Power MOSFETs.
  • 150uA Quiescent Current.
  • 1.2V ±1% Feedback Reference Voltage at Room Temperature.
  • 4.3ms Internal Soft-start Time.
  • Programmable Switching Frequency Range 100KHz ~ 600KHz.
  • COT Control Mode.
  • PFM operation mode at light load.
  • Precision Enable Threshold for Programmable Input UVLO Threshold and Hysteresis.
  • Cycle-by-Cycle Curre.

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SCT2A21 Distributor