MAX8893B
Description
The MAX8893A/MAX8893B/MAX8893C power-management integrated circuits (PMICs) are designed for a variety of portable devices including cellular handsets. The PMICs include a high-efficiency step-down DC-DC converter, five low-dropout linear regulators (LDOs) with programmable output voltages, individual power-on/ off control inputs, a load switch, and a USB high-speed switch. These devices maintain high efficiency with a low no-load supply current, and the small 3.0mm x 2.5mm WLP package makes them ideal for portable devices. The step-down DC-DC converter utilizes a proprietary 4MHz hysteretic PWM control scheme that allows for ultra-small external ponents. Internal synchronous rectification improves efficiency and eliminates the external Schottky diode that is required in conventional stepdown converters. Its output voltage is programmable by the I2C serial interface and output current is guaranteed up to 500m A. LDO1, LDO4, and LDO5 offer low 45FVRMS output noise and low...
