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19-3201; Rev 2; 2/11 KIT EVALUATION AVAILABLE Digital Power-Supply Controller/Monitor with PMBus Interface General Description Features M The MAX8688 fully integrated digital power-supply con- PMBus Interface for Programming, Monitoring, A X troller and monitor IC works with any existing POL Sequencing Up and Down, and Accurate Output- (point-of-load) power supply to provide complete digital Voltage Control programmability. By interfacing to the reference input, Controls Output Voltage with 0.2% Accuracy for 8 feedback node, and output enable, the MAX8688 takes Line, Load, and Temperature Variations 6 control of the POL to provide functions such as perfect Output Voltage, Output Current, and Temperature 8 8 tracking, sequencing, margining, and dynamic adjust- ment of the output voltage. Monitoring with Adjustable Monitor Rate The MAX8688 offers an accurate 12-bit analog-to-digi- Current Measurement with 2.6% Accuracy tal converter (ADC) accompanied with two differential Programmable Soft-Start and Soft-Stop Ramp amplifiers for accurately monitoring both voltage and Rates current. An integrated 12-bit digital-to-analog converter