Datasheet > RT8131B

RT8131B

更新时间： 2024-09-24 15:50:03

品牌	Logo	应用领域
立锜 - RICHTEK		/
页数	文件大小	规格书
16页	236K
描述
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中文翻译

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技术参数
数据手册

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RT8131B 技术参数

Status：	Active	Vs (typ) (V)：	5
Vin (min) (V)：	5.5	Vin (max) (V)：	26.5
Vout (min) (V)：	4.5	Vout (max) (V)：	22
Preset Vout (V)：		Output Adj. Method：	Resistor
Accuracy (+/- %)：	0.875	Freq (typ) (kHz)：	300
Freq (min) (kHz)：		Freq (max) (kHz)：
Iq (typ) (mA)：	2	Features：	Enable Input;OCP;OVP;Power Good;SCP;UVP
Package Type：	WDFN3x3-10

RT8131B 数据手册

RT8131B

5V High Efficiency Synchronous Buck PWM Controller

General Description

Features

^High Light Load Efficiency

The RT8131B is a high efficiency single phase

synchronous Buck DC-DC controller with 5V supply

voltage.

^Single 5V Driver Voltage

^Integrated High Driving Capability N-MOSFET Gate

Drivers

The RT8131B has embedded MOSFET gate driver with

high driving capability, supporting driving voltage up to 5V.

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

current sense technique for over-current protection with

adjustable threshold set by the LGATE pin (LGOCS).

Other features include power good indication, enable/

disable control and internal soft-start. The RT8131B also

provides fault protection functions to protect the power

stage output. With above functions, the IC provides

customers a cost-effective solution for high efficiency

power conversion. The RT8131B is available in the WDFN-

10L 3x3 package.

^300kHz Fixed Frequency Internal Oscillator

^88% Maximum PWM Duty Cycle

^Power Good Indicator

^Enable/Disable Control

^Internal Soft-Start

^Lossless Low-Side MOSFET R_DS(ON)Current Sensing

for Over-Current Fault Monitoring

^LGATE Over-Current Setting (LGOCS)

 OCP, UVP, OVP, OTP, UVLO

Applications

 Motherboard, Memory/Chip-Set Power

 Graphic Card,GPU/Memory Core Power

 Low Voltage, High CurrentDC-DC Regulator

Ordering Information

RT8131B

Package Type

QW : WDFN-10L 3x3 (W-Type)

Pin Configuration

Lead Plating System

G : Green (Halogen Free and Pb Free)

(TOP VIEW)

BOOT

PHASE

UGATE

LGATE

GND

PGOOD

VOS

COMP/EN

VCC

Note :

Richtek products are :

 RoHS compliant and compatible with the current require-

ments of IPC/JEDEC J-STD-020.

 Suitable for use in SnPb or Pb-free soldering processes.

WDFN-10L 3x3

Marking Information

KT= : Product Code

YMDNN : Date Code

KT=YM

DNN

is a registered trademark of Richtek Technology Corporation.

DS8131B-00 March 2017

www.richtek.com

12 3 4 5 6 7...16

中文翻译

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