RT9222 Datasheet (Richtek) - Programmable Synchronous PWM Buck Converter

RT9222, Programmable Synchronous PWM Buck Converter

The RT9222 integrates a PWM controller and two low-dropout linear regulators into a single chip.

The PWM controller provides the CPU core voltage controlled by a 5-bit DAC and the linear section regulates power for GTL bus, clock driver or other circuits on motherboards.

The PWM controller provides

RT9222 Features

* z Provides 3 Regulated Voltages z N-MOSFET Driver for High Efficiency Switching Section z Power-good, Over-voltage, and Current- limiting Protection for Switching Section z Adjustable Output Voltage for Linear Section z Linear Section Uses Low Cost NPN Transistor as Power Device z TTL-compatible 5-