General Description
The AOZ2260QI-18 is a high-efficiency, easy-to-use DC/
DC synchronous buck regulator that operates up to 28V.
The device is capable of supplying 6A 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 1.3μs.
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 AOZ2260QI-18 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
 6A continuous output current
 Output voltage adjustable down to 0.8V (±1.0%)
 Low RDS(ON) internal NFETs
– 30m high-side
– 17m low-side
 Constant On-Time with input feed-forward
 Programmable on-time up to 1.3μs
 Selectable PFM light load operation
 Ceramic capacitor stable
 Adjustable soft start
 Ripple reduction
 Power Good output
 Integrated bootstrap diode
 Cycle-by-cycle current limit
 Short-circuit protection
 Thermal shutdown
 Thermally enhanced 4mm x 4mm QFN-23L package

Applications
 Portable computers
 Compact desktop PCs
 Servers
 Graphics cards
 Set-top boxes
 LCD TVs
 Cable modems
 Point-of-load DC/DC converters
 Telecom/Networking/Datacom equipment