AOZ2379QI Datasheet | Alpha & Omega Semiconductors

Description The AOZ2379QI is a high-efficiency, easy-to-use DC/DC synchronous buck regulator that operates over a wide 6.5 V to 24 V voltage range.The device is capable of supplying 30 A of continuous output current with an output voltage adjustable down to 0.6 V (±1.0%). The AOZ2379QI integrates an internal linear regulator to generate 5.3 V VCC from input. If input voltage is lower than 5.3 V, the linear regulator operates at low drop output mode, which allows the VCC voltage is equal to input voltage minus the drop-output voltage of the 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. A low 80 ns minimum on-time 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 AOZ2379QI is available in a 5 mm×5 mm QFN-28L package and is rated over a -40°C to +85°C ambient temperature range. Features - Wide input voltage range - 6.5 V to 24 V - 30 A continuous output current - Output voltage adjustable from 0.6 V ±1.0% - Low RDS(ON) internal NFETs - 3.5mΩ high-side - 1.0 mΩ low-side - Constant On-Time with input feed-forward - Programmable on-time up to 3.5 µs and down to 80  ns - Programmable switching frequency range: 32 k Hz to 1 MHz (for 12 VIN to 1 VOUT) - Selectable PFM or forced PWM light load operation - Ceramic capacitor stable - Adjustable soft start - Power Good output - Integrated bootstrap diode -...