Datasheet > RT8241D

RT8241D

更新时间： 2024-09-23 20:04:47

品牌	Logo	应用领域
立锜 - RICHTEK		/
页数	文件大小	规格书
16页	265K
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RT8241D 技术参数

Status：	Active	Vs (typ)(V)：	5
Vin (min)(V)：	4.5	Vin (max)(V)：	26
Vout (min)(V)：	0.675	Vout (max)(V)：	3.3
Preset Vout(V)：		Output Adj. Method：	Digital;Resistor
Accuracy(+/- %)：	1	Freq (typ)(kHz)：	300
Freq (min)(kHz)：		Freq (max)(kHz)：
Iq (typ)(mA)：	0.5	Features：	Adjustable Current Limit;Built-in Bootstrap Switch;COT Control;Cycle-by-Cycle Current Limit;Diode Emulation Mode;Enable Input;OVP;PSM;Power Good;SCP;UVP
Package Type：	WQFN2x2-12

RT8241D 数据手册

RT8241D

High Efficiency Single Synchronous Buck PWM Controller

General Description

Features

z Meet Intel VCCSA Voltage Slew Rate

z Built-in 1% Reference Voltage

z 2-Bit Programmable Output Voltage with Integrated

Transition Support

The RT8241D PWM controller provides high efficiency,

excellent transient response, and highDC output accuracy

needed for stepping down high voltage batteries to

generate low voltage CPU core, I/O, and chipset RAM

supplies in notebook computers.

z Quick Load-Step Response within 100ns

z 4700ppm/°C Programmable Current Limit by Low

Side R_DS(ON)Sensing

The RT8241D supports on chip voltage programming

function between 0.675V and 0.9V by controllingGX digital

inputs.

z 4.5V to 26V Battery Input Range

z Internal Ramp Current Limit Soft-Start Control

z Drives Large Synchronous Rectifier FETs

z Integrated Boost Switch

The constant-on-time PWM control scheme handles wide

input/output voltage ratios with ease and provides 100ns

“instant-on” response to load transients while maintaining

a relatively constant switching frequency.

z Over/Under Voltage Protection

z Thermal Shutdown

z Power Good Indicator

The RT8241Dachieves high efficiency at a reduced cost

by eliminating the current-sense resistor found in

traditional current-mode PWMs. Efficiency is further

enhanced by its ability to drive very large synchronous

rectifier MOSFETs and enter diode emulation mode at

light load condition. The buck conversion allows this device

to directly step down high voltage batteries at the highest

possible efficiency. The RT8241Dis intended for CPU core,

chipset, DRAM, or other low voltage supplies as low as

0.675V.

z RoHS Compliant and Halogen Free

Applications

z Notebook Computers

z CPU/GPU Core Supply

z Chipset/RAM Supply

z GenericDC/DC Power Regulator

Pin Configurations

The RT8241Dis available in a WQFN-12L 2x2 package.

(TOP VIEW)

Ordering Information

RT8241D

12 11 10

LGATE

PGOOD

Package Type

QW : WQFN-12L 2x2 (W-Type)

GND

PHASE

UGATE

Lead Plating System

G : Green (Halogen Free and Pb Free)

Z : ECO (Ecological Element with

Halogen Free and Pb free)

Note :

WQFN-12L 2x2

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.

is a registered trademark of Richtek Technology Corporation.

DS8241D-03 January 2014

www.richtek.com

12 3 4 5 6 7...16

中文翻译

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与RT8241D相关器件

型号	品牌	获取价格	描述	数据表
RT8241E	RICHTEK	获取价格	暂无描述
RT8243A	RICHTEK	获取价格	暂无描述
RT8243AZQW	RICHTEK	获取价格	High Efficiency, Main Power Supply Controller for Notebook Computers
RT8243B	RICHTEK	获取价格	High Efficiency, Main Power Supply Controller for Notebook Computers
RT8243BZQW	RICHTEK	获取价格	High Efficiency, Main Power Supply Controller for Notebook Computers
RT8243C	RICHTEK	获取价格	High Efficiency, Main Power Supply Controller for Notebook Computers
RT8243CZQW	RICHTEK	获取价格	High Efficiency, Main Power Supply Controller for Notebook Computers
RT8245A	RICHTEK	获取价格	暂无描述
RT8245B	RICHTEK	获取价格	暂无描述
RT8245C	RICHTEK	获取价格	暂无描述

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