AOZ22421QI Datasheet | Alpha & Omega Semiconductors

28V/10A Synchronous EZBuck TM Regulator General Description The AOZ22421QI is a high-efficiency, easy-to-use DC/DC synchronous buck regulator that operates up to 28V. The device is capable of supplying 10A of continuous output current with an output voltage adjustable down to 0.8V ±1%. A proprietary constant on-time PWM control with input feed-forward results in ultra-fast transient response while maintaining relatively constant switching frequency over the entire input voltage range. The on time can be externally programmed up to1.2µs. The device Features multiple protection functions such as VCC under-voltage lockout, cycle-by-cycle current limit, output over-voltage protection, short-circuit protection, and thermal shutdown. The AOZ22421QI is available in a 4mm×4mm QFN-22L package and is rated over a -40°C to +85°C ambient temperature range. Features - Wide input voltage range: -  4V to 28V - Support Intel ITDC up to 10A - Support Intel ICCMAX up to 12A - Output voltage adjustable to 0.8V ±1.0% - Low RDS(ON) internal NFETs - 10mΩ high-side - 10mΩ low-side - Constant On-Time with input feed-forward - Programmable on-time up to 1.2µs - Selectable PFM Light-Load Operation - Ceramic capacitor stable - Adjustable soft start - Power Good output - Integrated bootstrap diode - Cycle-by-cycle current limit - Short-circuit protection - Over voltage protection - Thermal shutdown - Thermally enhanced 22-pin 4 × 4 QFN package Applications - Portable puters - pact desktop...