High-Efficiency, Quad-Output, Main Power-Supply Controllers For Notebook Computers

The MAX8732 MAX8733/MAX8734 dual Step-down switch-mode power-supply (SMPS) controllers generate logic-supply voltages in battery-powered systems. The MAX8732 MAX8733/MAX8734 include two pulse-width modulation (PWM) controllers, adjustable from 2V to 5.5V or fixed at 5V and 3.3V. These devices feature two linear Regulators providing 5V and 3.3V always-on outputs. Each linear Regulator provides up to 100mA output current with Automatic linear-regulator bootstrapping to the main SMPS outputs. The MAX8732 MAX8733/MAX8734 include on-board power-up sequencing, a power-good (PGOOD) output, digital soft-start, and internal soft-stop output dis- charge that prevents negative voltages on shutdown. By Maxim Integrated Products