Datasheet > GRM31CR71A106KA01

GRM31CR71A106KA01

更新时间： 2024-11-04 12:00:31

品牌	Logo	应用领域
立锜 - RICHTEK		转换器
页数	文件大小	规格书
11页	224K
描述
2.25MHz 1A Synchronous Step-Down Converter

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RT8057

2.25MHz 1A Synchronous Step-Down Converter

General Description

Features

^z2.7V to 5.5V Wide Input Operation Range

^z2.25MHz Fixed-Frequency PWM Operation

^zUp to 1A Output Current

The RT8057 is a high efficiency Pulse-Width-Modulated

(PWM) step-downDC/DC converter, capable of delivering

1Aoutput current over a wide input voltage range from 2.7V

to 5.5V. The RT8057 is ideally suited for portable electronic

devices that are powered from 1-cell Li-ion battery or from

other power sources such as cellular phones, PDAs, hand-

held devices, game console and related accessories.

^zUp to 90% Efficiency

^z0.6V Reference Allows Low Output Voltage

^zInternal Soft-Start

^zNo Schottky Diode Required

^zInternal Compensation to Reduce External

Components

The internal synchronous rectifier with low R_DS(ON)

dramatically reduces conduction loss at PWM mode.

No external Schottky diode is required in practical

applications. The RT8057 enters LowDropout Mode when

normal Pulse -Width Mode cannot provide regulated output

voltage by continuously turning on the upper P-MOSFET.

The RT8057 enters shut-down mode and consumes less

than 1μA when the EN pin is pulled low. The switching

ripple is easily smoothed-out by small package filtering

elements due to a fixed operating frequency of 2.25MHz.

^zLow Dropout Operation : 100% Duty Cycle

^zRoHS Compliant and Halogen Free

Applications

z Portable Instruments

z Game Console and Accessories

z Microprocessors and DSP Core Supplies

z Cellular Phones

z Wireless and DSL Modems

z PC Cards

The RT8057 is available in a smallWDFN-6SL2x2 package.

Ordering Information

Pin Configurations

(2)

RT8057

(TOP VIEW)

Taping Type ( Pin1 at Q2)

GND

VIN

Package Type

QW : WDFN-6SL 2x2 (W-Type)

Lead Plating System

G : Green (Halogen Free and Pb Free)

WDFN-6SL 2x2

Note :

Marking Information

Richtek products are :

J7 : Product Code

` RoHS compliant and compatible with the current require-

ments of IPC/JEDEC J-STD-020.

W : Date Code

J7W

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

DS8057-03 November 2011

www.richtek.com

12 3 4 5 6 7...11

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与GRM31CR71A106KA01相关器件

型号	品牌	获取价格	描述	数据表
GRM31CR71A106KA01#	MURATA	获取价格	民用设备,工业设备,移动设备,植入式以外的医疗器械设备 [GHTF A/B/C],汽车[信
GRM31CR71A106KA01L	ADI	获取价格	Isolated Switching Regulator
GRM31CR71A106KA01L	MURATA	获取价格	CHIP MONOLITHIC CERAMIC CAPACITOR
GRM31CR71A106MA01#	MURATA	获取价格	民用设备,工业设备,移动设备,植入式以外的医疗器械设备 [GHTF A/B/C],汽车[信
GRM31CR71A226KE15	MURATA	获取价格	Chip Monolithic Ceramic Capacitor for General
GRM31CR71A226KE15#	MURATA	获取价格	民用设备,工业设备,移动设备,植入式以外的医疗器械设备 [GHTF A/B/C],汽车[信
GRM31CR71A226KE15L	MURATA	获取价格	Ceramic Capacitor, Multilayer, Ceramic, 10V, 10% +Tol, 10% -Tol, X7R, 15% TC, 22uF, Surfac
GRM31CR71A226ME15	MURATA	获取价格	Chip Monolithic Ceramic Capacitors
GRM31CR71A226ME15#	MURATA	获取价格	民用设备,工业设备,移动设备,植入式以外的医疗器械设备 [GHTF A/B/C],汽车[信
GRM31CR71A226ME15L	MURATA	获取价格	Ceramic Capacitor, Multilayer, Ceramic, 10V, 20% +Tol, 20% -Tol, X7R, 15% TC, 22uF, Surfac

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