RT8125HGQW

$1.27

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

SKU:0a6892b75ed8 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)：4.5V ~ 13.2V
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 ~ 125°C (TJ)
Mounting Type：Surface Mount
Package / Case：10-WFDFN Exposed Pad
Supplier Device Package：10-WDFN (3x3)
Grade：-
Qualification：-

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RT8125HGQW

Overview

The RT8125HGQW is a high-efficiency single synchronous buck PWM controller manufactured by Richtek. It operates with a fixed switching frequency of 300 kHz and supports an output voltage range from 300 mV to 3.3 V. The device provides an output current capability of 4 mA and functions within a temperature range of -40°C to +85°C. Packaged in a WDFN-10 surface-mount format, it utilizes Mach Response technology for rapid transient response while maintaining constant switching frequency.

Feature Summary

Implements Mach Response technology for instant-on load transient response
Eliminates external current sense resistors to reduce component count and cost
Capable of driving large synchronous rectifier MOSFETs for enhanced efficiency

Applications

CPU core power supplies in notebook computers
I/O power supplies for motherboard systems
Chipset RAM power regulation

Procurement Notes

Verify the specific suffix HGQW against official datasheets to confirm package type and temperature grade. Confirm RoHS compliance status through manufacturer documentation. Ensure ESD handling protocols are followed due to moisture sensitivity classification. Cross-reference part number aliases such as RT8125HN-A for compatibility checks.

Selection Notes

Select this controller for applications requiring high DC output accuracy and efficient step-down conversion from battery voltages. The absence of current sense resistors makes it suitable for cost-sensitive designs. Verify that the required output voltage falls within the 300 mV to 3.3 V range and that the thermal environment stays within the specified operating limits.

Part Context

This component belongs to the RT8125 family of high-efficiency synchronous buck PWM controllers. It is designed specifically for portable computing platforms where space and efficiency are critical. The device integrates control logic optimized for CPU and chipset power delivery requirements.