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MAX17031 Datasheet Dual Quick-pwm Step-down Controller

Manufacturer: Maxim Integrated (now Analog Devices)

Overview: 19-4305; Rev 0; 10/08 KIT ATION EVALU E L B A .. IL AVA Dual Quick-PWM Step-Down Controller with LowPower LDO and RTC Regulator for MAIN.

General Description

The MAX17031 is a dual Quick-PWM™ step-down power-supply (SMPS) controller with synchronous rectification, intended for main 5V/3.3V power generation in battery-powered systems.

Low-side MOSFET sensing provides a simple low-cost, highly efficient current sense for valley current-limit protection.

bined with the output overvoltage and undervoltage protection

Key Features

  • this current limit ensures robust output supplies. The 5V/3.3V SMPS outputs can save power by operating in pulse-skipping mode or in ultrasonic mode to avoid audible noise. Ultrasonic mode forces the controller to maintain switching frequencies greater than 20kHz at light loads. The SKIP input also has an accurate logic threshold, allowing it to be used as a secondary feedback input to refresh an external charge pump or secondary winding without overcharging the output voltages. An internal 100.

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MAX17031 Distributor