SCT2A21 Datasheet | SCT

芯洲科技 Silicon Content Technology Rev.1.0 4.5V-100V Vin, 1A, Constant On-Time Synchronous BUCK Converter Features - Wide Input Range: 4.5V-100V - 1A Continuous Output Current - Integrated 530mΩ High-Side and 220mΩ Low- Side Power MOSFETs - 150u A 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 Current Limiting - Over-Voltage Protection - Over-Temperature Protection - Available in an ESOP-8 Package APPLICATIONS - 48V Industry Power Bus System - E-bike, Scooter - BMS 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 150u A 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. The SCT2A21 Features programmable switching frequency from 100 k Hz to 600KHz with an external resistor, which provides the flexibility to optimize either efficiency or external ponent...