AOZ2261QI-15 Datasheet | Alpha & Omega Semiconductors

Description The AOZ2261QI-15 is a high-efficiency, easy-to-use DC/ DC synchronous buck regulator that operates up to 28V. The device is capable of supplying 8A of continuous output current with an output voltage adjustable down to 0.8V (±1.0%). 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 to 2.6µs. 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 AOZ2261QI-15 is available in a 4mm x 4mm QFN22L package and is rated over a -40°C to +85°C ambient temperature range. Efficiency 100 95 Efficiency vs. Load Current FSW = 450k Hz VOUT = 1.05V Efficiency (%) 6.0V 8.4V 12.0V 19.5V Output Current (A) Features - Wide input voltage range - 2.7V to 28V - 8A continuous output current - Output voltage adjustable down to 0.8V (±1.0%) - Low RDS(ON) internal NFETs - 26m high-side - 12m low-side - Constant On-Time with input feed-forward - Programmable on-time up to 2.6µs - Selectable PFM light load...