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Buck DC/DC Converter unveiled with Power OK function

Advanced Analogic Technologies, Inc. (AnalogicTech is announcing the AAT1152, a fully integrated 850kHz 1A Buck DC/DC Converter. This addition to AnalogicTech's converter family adds a Power OK (POK) function that monitors the output, alerting the system if the output voltage falls out of regulation.

The AAT1152 SwitchReg is a member of AnalogicTech's Total Power Management IC product family. The step-down switching converter is ideal for applications where high efficiency, small size, and low ripple are critical. Able to deliver 1A with internal Power MOSFETs, the current-mode controlled IC provides high efficiency using synchronous rectification. Fully internally compensated, the AAT1152 simplifies system design and lowers external part count. The AAT1152 features a Power Good (POK) function which monitors output, alerting the system if the output voltage falls out of regulation. The AAT1152 is available in an MSOP-8 package, rated over the -40 to +85°C temperature range.

Applications:
* Cable/DSL modems
* Computer peripherals
* High efficiency conversion from 5V or 3.3V supply
* Network cards
* Set top boxes

Features:
* 5.5V max supply input
* Fixed or adjustable output voltage: 1.0V”4.2V with 100 mV increment
* 1A output current
* Integrated low on-resistance power switches
* Synchronous rectification
* Up to 95% efficiency
* Power Good signal
* Internally compensated current mode control
* High initial accuracy: 1%
* 850kHz switching frequency
* Constant PWM mode
* Low output ripple with light load
* Internal soft start
* Current limit protection
* Over-temperature protection
* MSOP-8 package

For more information go to: www.analogictech.com

AAT1152 Data sheet

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