RT8241E - Richtek

RT8241E High Efficiency Single Synchronous Buck PWM Controller

The RT8241E PWM controller provides high efficiency, excellent transient response, and high DC output accuracy needed for stepping down high voltage batteries to generate low voltage CPU core, I/O, and chipset RAM supplies in notebook computers. The RT8241E supports on chip voltage programming function between 0.675V and 0.9V by controlling GX digital inputs.

Features

z Meet Intel VCCSA Voltage Slew Rate z Built-in 1% Reference Voltage z 2-Bit Programmable Output Voltage with Integrated Transition Support z Quick Load-Step Response within 100ns z 4700 ppm/°C Programmable Current Limit by Low Side RDS(ON) Sensing z 4.5V to 26V Battery Input Range z Internal Ramp Current Limit Soft-Start Control z Drives Large Synchronous Rectifier FETs z Integrated Boost Switch z Over/Under Voltage Protection z Thermal Shutdown z Power Good Indicator z RoHS Compliant and Halogen Free Applications z Notebook Computers z CPU/GPU Core Supply z Chipset/RAM Supply z Generic DC/DC.