AOZ1267QI-01
28V/8A Synchronous EZBuckTM Regulator
General Description
The AOZ1267-01 is a high-efficiency, easy-to-use...
AOZ1267QI-01
28V/8A Synchronous EZBuckTM Regulator
General Description
The AOZ1267-01 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%).
The AOZ1267-01 integrates an internal linear regulator to generate 5.3V VCC from input. If input
voltage is lower than 5.3V, the linear regulator operates at low dropoutput 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. The switching frequency can be externally programmed up to 1MHz.
The device features multiple protection functions such as VCC under-
voltage lockout, cycle-by-cycle current limit, output over-
voltage protection, short-circuit protection, as well as thermal shutdown.
The AOZ1267-01 is available in a 4mm x 4mm QFN-23L package and is rated over a -40°C to +85°C ambient temperature range.
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
– 35m high-side – 12m low-side Constant On-Time with input feed-forward Programmable frequency up to 1MHz Selectable PFM light load operation...