Datasheet > RT8129B

RT8129B

更新时间： 2024-04-09 19:00:55

品牌	Logo	应用领域
立锜 - RICHTEK		/
页数	文件大小	规格书
17页	964K
描述
High Efficiency Single Synchronous Buck PWM Controller

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RT8129B 数据手册

RT8129B

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 RT8129B is a high efficiency single phase

synchronous buck controller with 5V/12V supply

voltage. The RT8129B 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 RT8129B also provide protection functions

including Over-Voltage Protection (OVP), Under-Voltage

Protection (UVP), current limit and thermal shutdown.

 Thermal Shutdown

Applications

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.

 Motherboard, Memory/Chip-set Power

 Graphic Card, GPU/Memory Core Power

 Low Voltage, High Current DC-DC Regulator

Marking Information

With above functions, the RT8129B provides

customers a cost-effective solution for high efficiency

power conversion. The RT8129B is available in the

WDFN-10L 3x3 package.

Q0= : Product Code

YMDNN : Date Code

Q0=YM

DNN

Simplified Application Circuit

RT8129B

VCC

BOOT

UGATE

PHASE

OUT

LGATE/

OCSET

PGOOD

Enable

GND

is a registered trademark of Richtek Technology Corporation.

DS8129B-00 June 2019

www.richtek.com

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与RT8129B相关器件

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RT8130B	RICHTEK	获取价格	暂无描述
RT8130C	RICHTEK	获取价格	暂无描述
RT8131B	RICHTEK	获取价格	暂无描述
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RT8132-8-4M8	Schaffner	获取价格	Current-compensated Chokes