RT8125CGQW

$1.27

Description：IC REG CTRLR BUCK PWM WDFN-10
Series：-
Mfr：Richtek USA Inc.
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:efef5c36576b Category: DC DC Switching Controllers Brand: Richtek USA Inc.

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Product introduction

Product Detailed Parameters

Description：IC REG CTRLR BUCK PWM WDFN-10
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)：1.5V ~ 24V
Frequency - Switching：300kHz
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 ~ 85°C (TA)
Mounting Type：Surface Mount
Package / Case：10-WFDFN Exposed Pad
Supplier Device Package：10-WDFN (3x3)
Grade：-
Qualification：-

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RT8125CGQW

Overview

The RT8125CGQW is a high-efficiency single synchronous buck PWM controller manufactured by Richtek USA Inc. It operates with an input voltage range of 1.5V to 24V and provides an adjustable output voltage from 0.3V to 3.3V. The device features a typical switching frequency of 300kHz and utilizes a 10-WDFN (3x3) package. It includes control characteristics such as current limiting, enable functionality, frequency control, phase control, power good indication, and soft start capabilities.

Feature Summary

Provides high efficiency and excellent transient response for CPU core and chipset RAM supplies
Utilizes Mach Response technology for rapid load transient handling while maintaining constant switching frequency
Eliminates the need for external current sense resistors to reduce system cost and enhance efficiency
Capable of driving large synchronous rectifier MOSFETs for optimized performance

Applications

CPU core power supplies in notebook computers
I/O power supplies in notebook computers
Chipset RAM power supplies in notebook computers
Generic DC-DC power regulators
Motherboards and desktop servers

Procurement Notes

Verify the specific suffix 'CGQW' against the manufacturer's official datasheet to confirm pinout compatibility and electrical specifications. Ensure that the required output voltage range and switching frequency align with the design constraints. Confirm RoHS compliance status and moisture sensitivity level requirements before finalizing procurement orders.

Selection Notes

Select this component when designing systems requiring high accuracy and fast transient response for low-voltage applications. The absence of a current sense resistor makes it suitable for cost-sensitive designs. Ensure the application environment stays within the specified operating temperature range and input voltage limits defined in the technical documentation.

Part Context

This part belongs to the RT8125 family of synchronous buck controllers designed for portable computing applications. It is distinct from other Richtek PMICs by its focus on high-speed transient response and simplified current mode control without external sensing components. The WDFN-10 package allows for compact board space utilization in mobile devices.