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深圳市泰德兰电子有限公司
深圳市泰德兰电子有限公司
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TheAOZ2261QI-11isahigh-efficiency,easy-to-useDC/DCsynchronousbuckregulatorthatoperatesupto28V
The AOZ2261QI-11 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%.
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 2.6uS.
The device features multiple protection functions such as
VCCunder-voltage lockout, cycle-by-cycle current limit,
output over-voltage protection, short-circuit protection,
ａnd thermal shutdown.
The AOZ2261QI-11 is available in a 4mm×4mm QFN-22L package and is rated over a -40°C to +85°C ambient
temperature range
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
–26mhigh-side
–12mlow-side
Constant On-Time with input feed-forward
Programmable on-time up to 2.6µs
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
Over-voltage protection
Thermal shutdown
Thermally enhanced 4mm x 4mm QFN-22L 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
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