AOZ2367QI-11 Datasheet | Alpha & Omega Semiconductors

Description The AOZ2367QI-11 is a high-efficiency, easy-to-use DC/ DC synchronous buck regulator that operates over a wide 4.5V to 24V voltage range.The device is capable of supplying 20A of continuous output current with an output voltage adjustable down to 0.6V (±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. A low 80ns minimum ontime enables very low output voltages at ultra-high operating frequencies. Integrated AC ripple injection enables all-ceramic low ESR output filter capacitors and smaller PCB footprint with no external ponents needed. Selectable PFM mode optimizes light load efficiency while forced PWM mode maintains constant frequency for lower harmonic noise. 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 AOZ2367QI-11 is available in a 5mm×5mm QFN-28L package and is rated over a -40°C to +85°C ambient temperature range. Features - Wide input voltage range - 4.5V to 24V - 20A continuous output current - Output voltage adjustable down to 0.6V (±1.0%) - Low RDS(ON) internal NFETs - 4m high-side - 1.5m low-side - Constant On-Time with input feed-forward - Programmable on-time up to 2.6µs and down to 80ns - Programmable switching frequency range: 32k Hz to 1MHz (for 12VIN to 1VOUT) - Selectable PFM or forced PWM light load operation - Ceramic capacitor stable - Adjustable soft start - Power Good output - Integrated bootstrap diode - Cycle-by-cycle current limit - Short-circuit protection - Thermal shutdown - Thermally enhanced 5mm x 5mm QFN-28L package Applications - pact PCs and gaming systems - Set-top boxes and LCD TVs - Server and storage systems - Data and networking - Embedded puting - Point-of load DC/DC converters Rev. 2.1 May...