General Description
The AOZ23655QI is a high-efficiency, easy-to-use DC/DC
synchronous buck regulators capable of operation from a 4V
to 28V input bus. The device is capable of supplying 18A of
continuous output current with an output voltage adjustment
from 0V to 1.8V by controlling VID0 and VID1 signals.
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 devices feature 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 AOZ23655QI is available in a 5mm×5mm QFN-31L
package and is rated over a -40°C to +85°C ambient
temperature range.

Features
• Wide input voltage range
- 4V to 28V
• Support Intel ITDC up to 18A
• Support Intel ICCMAX up to 45A
• 2 bits programmable output voltage adjustable from 0V
to 1.8V
• Integrated high performance trench MOSFETs capable of :
- High peak current
- Up to 90A with 10ms on pulse
- Up to 120A with 10μs on pulse
- High efficiency ceramic capacitor stable
- 6.5mΩ high-side
- 3mΩ low-side
• Constant On-Time with input feed-forward
• Programmable frequency up to 2.6μs
• Selectable PFM light load operation
• Adjustable load-line compensation
• High accuracy current monitor
• Remote sense
• Ceramic capacitor stable
• Fixed soft start
• Power Good output
• Integrated bootstrap diode
• Cycle-by-cycle current limit
• Short-circuit protection
• Over voltage protection
• Thermal shutdown
• Thermally enhanced 31-pin 5m×5m QFN

Applications
• Portable computers
• Compact desktop PCs
• Servers
• Networking equipment