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RT9218 - 5V/12V Synchronous Buck PWM DC/DC and Linear Power Controller

General Description

The RT9218 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.

Key Features

  • z Operating with 5V or 12V Supply Voltage z Drives All Low Cost N-MOSFETs z Voltage Mode PWM Control z 300kHz Fixed Frequency Oscillator z Fast Transient Response : `High-Speed GM Amplifier `Full 0 to 100% Duty Ration z Internal Soft-Start z Power Good Indicator z Adaptive Non-Overlapping Gate Driver z Over Current Fault Monitor on MOSFET, No Current Sense Resistor Required z Specific Power Good Indicator for Intel® Grantsdale FSB_VTT Power Sequence z RoHS Compliant and 100% Lead (Pb)-Free Appli.

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Datasheet Details

Part number RT9218
Manufacturer Richtek
File Size 399.54 KB
Description 5V/12V Synchronous Buck PWM DC/DC and Linear Power Controller
Datasheet download datasheet RT9218 Datasheet

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RT9218 5V/12V Synchronous Buck PWM DC/DC and Linear Power Controller General Description The RT9218 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. The part is operated at fixed 300kHz frequeny providing an optimum compromise between efficiency, external component size, and cost. The linear controller is implemented to drive an external MOSFET for regulation and it's adjustable by setting external resistors.