RT9218BGS

Description：IC REG DL BUCK/LINEAR SYNC 14SOP
Series：-
Mfr：Richtek USA Inc.
Package：Bulk

SKU:7aea02cf37e6 Category: Voltage Regulators - Linear + Switching Brand: Richtek USA Inc.

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Product introduction

Product Detailed Parameters

Description：IC REG DL BUCK/LINEAR SYNC 14SOP
Series：-
Mfr：Richtek USA Inc.
Package：Bulk
Topology：Step-Down (Buck) Synchronous (1), Linear (LDO) (1)
Number of Outputs：2
Frequency - Switching：300kHz
Voltage/Current - Output 1：Controller
Voltage/Current - Output 2：Controller
Voltage/Current - Output 3：-
w/LED Driver：No
w/Supervisor：No
w/Sequencer：No
Voltage - Supply：5V ~ 12V
Operating Temperature：-40°C ~ 85°C (TA)
Mounting Type：Surface Mount
Package / Case：14-SOIC (0.154", 3.90mm Width)
Supplier Device Package：14-SOP
Grade：-
Qualification：-

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RT9218BGS

Overview

The RT9218BGS is a dual-output power controller integrating one synchronous buck PWM DC-DC converter and one linear regulator. Designed for PC-based systems, it generates logic supply voltages with internal soft-start, frequency compensation, and specific power good signaling sequences. The device operates from a 12V supply, drives low-cost N-MOSFETs via an adaptive non-overlapping gate driver, and features fast transient response through a high-speed GM amplifier. It supports full 0 to 100% duty ratio operation and includes over-current fault monitoring without external sense resistors.

Feature Summary

Integrates a synchronous buck PWM controller and a linear regulator in a single package
Provides specific power good indicators and sequential power management for Intel Grantsdale FSB_VTT applications
Features adaptive non-overlapping gate drivers capable of driving low-cost N-MOSFETs

Applications

Graphic cards
Motherboards
Desktop servers
IA equipment
Telecomm equipment

Procurement Notes

Verify the exact suffix 'GS' against official Richtek documentation to confirm pinout and thermal specifications. Confirm RoHS compliance status as indicated in datasheets. Check for end-of-life notices or alternative recommendations from the manufacturer before finalizing procurement plans.

Selection Notes

Select this component for designs requiring combined buck and linear regulation from a 12V rail. Ensure compatibility with Intel Grantsdale architecture requirements if used in legacy PC platforms. Verify that the package footprint matches the PCB layout constraints for the integrated MOSFET drive capabilities.

Part Context

The RT9218B belongs to Richtek's family of multi-output power controllers designed for complex system voltage sequencing. It addresses the need for compact solutions in computing hardware by combining switching and linear regulation technologies. This integration reduces component count and board space compared to discrete implementations.