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General Description

The RT9228 is a 3-in-one power controller optimized for high-performance microprocessor and computer applications. The IC integrates a synchronous buck PWM controller, a linear regulator, and a linear controller as well as monitoring and protection functions into a 24-pin SOP package. The PWM controller regulates the microprocessor core voltage. The linear regulator provides power for the clock driver circuit and the linear controller regulates power for the GTL bus.

Features

3-in-one Regulated Voltages for Microprocessor Core, Clock, and GTL

Compatible with HIP6016

Power-good Output Voltage Monitor Switching Section

5-bit DAC Programmable from 1.3V to 3.5V

±1 DAC Accuracy

Fast Transient Response

Full 0 to 100 Duty Cycle Driver

Fixed 200kHz Switching Frequency

Adaptive Non-Overlapping Gate Driver

Over-Current Monitor Uses MOSFET RDS(ON)

Over-Voltage Protection Uses Lower MOSFET Linear Section

Fixed Linear Regulator Output Voltage

MOSFET or NPN Driving Capability

Ultra Fast Response Speed

Under-Voltage Protection

Internal Thermal Shutdown

RoHS Compliant and 100 Lead (Pb)-Free

Applications

Full Motherboard Power Regulation for Computer

Low-voltage Distributed Power Supplies