General Description

The RT9218B is a dual output with one synchronous buck PWM and one linear controller. The part is proposed to generate logic-supply voltages for PC based systems. The high-performance device includes internal soft-start, frequency-compensation networks, power good signaling with specific sequence, and it comes all of the logic control, output adjustment, power monitoring and protection

functions into a small footprint package.

Features

Operating with 12V Supply Voltage

Drives All Low Cost N-MOSFETs

Voltage Mode PWM Control

300kHz Fixed Frequency Oscillator

Fast Transient Response :

    High-Speed GM Amplifier

    Full 0 to 100% Duty Ration

Internal Soft-Start

Power Good Indicator

Adaptive Non-Overlapping Gate Driver

Over-Current Fault Monitor on MOSFET, No Current Sense Resistor Required

Specific power good indicator for Intel® Grantsdale FSB_VTT power sequence

RoHS Compliant and 100% Lead (Pb)-Free

Applications

Graphic Card

Motherboard, Desktop Servers

IA Equipments

Telecomm Equipments

High Power DC-DC Regulators