RT9221
Programmable Synchronous PWM Buck Converter with 1.
5V/2.
5V Dual Low Dropout Linear
Regulator Controller
General Description
The RT9221 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 an adjustable Intel-compatible 1.
3V~3.
5V output voltage.
The synchronous N-MOSFET driver with 200 KHz switching frequency optimizes the efficiency, device size, and cost built-in over–voltage and current-limiting protection prevent the CPU from damage.
Power-good si...