AOZ2223QI Datasheet | Alpha & Omega Semiconductors

ALPHA & OMEGA SEMICONDUCTOR 36V/8A Synchronous EZBuck TM Regulator General Description The AOZ2223QI is a high-efficiency, easy-to-use DC/DC synchronous buck regulator that operates up to 36V. The device is capable of supplying 8A of continuous output current with an output voltage adjustable from 0.8V to 16V. The AOZ2223QI integrates an internal linear regulator to generate 5.3V (±5%) VCC from input power or external bias power. If bias voltage is higher than 4.8V, the input voltage of linear regulator switches to the bias for power saving. When the input voltage of linear regulator is lower than 5.3V, the linear regulator operates at low drop-output mode; the VCC voltage is equal to input voltage minus the drop-output voltage of internal linear regulator. 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 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 AOZ2223QI is available in a 4mm×4mm QFN-23L package and is rated over a -40°C to +85°C ambient temperature range. Features - Wide input voltage range - 4.8V to 36V Connect BIAS to an external bias (>5V) - 6.5V to 36V (Connect BIAS to VOUT if VOUT>5V) - 8A continuous output current - Output voltage adjustable from 0.8V to 16V. - Low RDS(ON) internal NFETs - 20mΩ high-side - 10mΩ low-side - Constant On-Time with input feed-forward - Ceramic capacitor stable - Adjustable soft start - Integrated bootstrap diode - Cycle-by-cycle current limit - Short-circuit protection - Thermal shutdown - Thermally enhanced 4mm x 4mm QFN-23L package Applications - General-purpose wide VIN applications - Industrial distributed power applications - 12-V and 24-V Industrial and munications power...