AOZ1237QI-02 Datasheet, PDF (1/15 Pages) Alpha & Omega Semiconductors – 24V/8A Synchronous EZBuckTM Regulator

AOZ1237QI-02
24V/8A Synchronous EZBuck^TM Regulator
General Description
The AOZ1237 is a high-efficiency, easy-to-use DC/DC
synchronous buck regulator that operates up to 24V.
The device is capable of supplying 8A 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 switching frequency
can be externally programmed up to 1MHz.
The device features multiple protection functions such as
V_CC under-voltage lockout, cycle-by-cycle current limit,
output over-voltage protection, short-circuit protection, as
well as thermal shutdown.
The AOZ1237 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 24V
 8A continuous output current
 Output voltage adjustable down to 0.8V (±1.0%)
 Low R_DS(ON) internal NFETs
– 35m high-side
– 8m low-side SRFET™
 Constant On-Time with input feed-forward
 Programmable frequency up to 1MHz
 Selectable PFM light load operation
 Ceramic capacitor stable
 Adjustable soft start
 Power Good output
 Integrated bootstrap diode
 Cycle-by-cycle current limit
 Short-circuit protection
 Over voltage 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
Rev. 2.0 April 2013
www.aosmd.com
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