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AOZ1237QI-02 Datasheet(PDF) 1 Page - Alpha & Omega Semiconductors |
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AOZ1237QI-02 Datasheet(HTML) 1 Page - Alpha & Omega Semiconductors |
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1 / 15 page  Rev. 2.0 April 2013 www.aosmd.com Page 1 of 15 AOZ1237QI-02 24V/8A Synchronous EZBuckTM 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 VCC 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 RDS(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 |
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