Datasheet > RT8129AQW

RT8129AQW

更新时间： 2024-09-25 01:19:47

品牌	Logo	应用领域
立锜 - RICHTEK		/
页数	文件大小	规格书
18页	816K
描述
High Efficiency Single Synchronous Buck PWM Controller

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RT8129AQW 数据手册

RT8129A

High Efficiency Single Synchronous Buck PWM Controller

General Description

Features

 Wide Input Voltage Range : 2.5V to 25V

 High Light Load Efficiency

 Integrated High Driving Capability N-MOSFET

Gate

The RT8129A is a high efficiency single phase

synchronous buck controller with 5V/12V supply

voltage. The RT8129A integrates a Constant-On-Time

(COT) PWM controller and a MOSFET drivers with

internal bootstrap diodes, which is specifically designed

to improve converter efficiency at light load condition.

At light load condition, it automatically operates in the

diode emulation mode to reduce switching frequency

and improve conversion efficiency.

 Drivers and Embedded Switching Boot Diode

 Single IC Supply Voltage : 4.5V to 13.2V

 Power-Good Indicator

 Enable/Disable Control

 Internal Soft-Start

 Programmable Current Limit Threshold

 Under Voltage Protection

 Over Voltage Protection

Other features include power good indication,

enable/disable control and internal soft-start function.

The RT8129A also provide protection functions

including Over Voltage Protection (OVP), Under

Voltage Protection (UVP), current limit and thermal

shutdown.

 Thermal Shutdown

Applications

 Motherboard, Memory/Chip-set Power

 Graphic Card, GPU/Memory Core Power

 Low Voltage, High Current DC/DC Regulator

This device uses lossless low-side MOSFET R_DS(ON)

current sense technique for current limit with adjustable

threshold set by connecting a resistor between the

LGATE/OCSET and GND.

Marking Information

With above functions, the RT8129A provides

customers a cost-effective solution for high efficiency

power conversion. The RT8129A is available in the

WDFN-10L 3x3 package.

5N= : Product Code

YMDNN : Date Code

5N=YM

DNN

Simplified Application Circuit

RT8129A

VCC

BOOT

UGATE

PHASE

OUT

LGATE/

OCSET

PGOOD

Enable

GND

is a registered trademark of Richtek Technology Corporation.

DS8129A-01 October 2015

www.richtek.com

12 3 4 5 6 7...18

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