RT6543AGQW

$1.41

Description：IC REG CTRLR BUCK PWM WQFN-20
Series：-
Mfr：Richtek USA Inc.
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:e772ae286c9b Category: DC DC Switching Controllers Brand: Richtek USA Inc.

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Product introduction

Product Detailed Parameters

Description：IC REG CTRLR BUCK PWM WQFN-20
Series：-
Mfr：Richtek USA Inc.
Package：Tape & Reel (TR),Cut Tape (CT)
Output Type：Transistor Driver
Function：Step-Down
Output Configuration：Positive
Topology：Buck
Number of Outputs：1
Output Phases：1
Voltage - Supply (Vcc/Vdd)：3V ~ 24V
Frequency - Switching：400kHz, 600kHz, 800kHz
Duty Cycle (Max)：-
Synchronous Rectifier：Yes
Clock Sync：No
Serial Interfaces：-
Control Features：Current Limit, Dead Time Control, Enable, Frequency Control, Phase Control, Power Good, Soft Start
Operating Temperature：-40°C ~ 125°C (TJ)
Mounting Type：Surface Mount
Package / Case：20-WFQFN Exposed Pad
Supplier Device Package：20-WQFN (3x3)
Grade：-
Qualification：-

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RT6543AGQW

Overview

The RT6543AGQW is a high-efficiency single synchronous buck PWM controller designed for Intel VCCIN AUX ICL and TGL applications. It operates with an input voltage range of 3V to 24V and features a programmable output voltage. The device supports switching frequencies of 400kHz, 600kHz, and 800kHz. It provides two outputs and includes comprehensive control features such as current limiting, blank time control, enable, frequency control, phase control, power good signaling, and soft start. The component functions within a temperature range of -40°C to +125°C TJ and is housed in a 20-WQFN (3x3) package.

Feature Summary

Synchronous buck topology optimized for high efficiency
Programmable output voltage with multiple fixed switching frequency options
Integrated protection and control features including current limit and soft start

Applications

Intel VCCIN AUX ICL power supplies
TGL platform power management
General purpose synchronous step-down conversion

Procurement Notes

Verify the specific suffix and marking code against the manufacturer's official datasheet to ensure compatibility with target design requirements. Confirm moisture sensitivity level handling procedures during assembly. Check for any recent revisions or obsolescence notices from Richtek USA Inc. prior to finalizing procurement plans.

Selection Notes

Select this controller when a synchronous buck solution with programmable output and flexible frequency selection is required. Ensure the application demands fit within the 3V to 24V input range and that the thermal performance supports the specified junction temperature limits. Verify that the 20-WQFN package footprint aligns with the PCB layout constraints.

Part Context

This component belongs to Richtek's series of DC-DC switching controllers. It is categorized under PMIC devices specifically engineered for stable voltage regulation in complex digital systems. The part number indicates a WQFN-20 package variant designed for surface mount technology applications requiring compact form factors.