Datasheet > RT8056GQW

RT8056GQW

更新时间： 2024-09-24 12:25:07

品牌	Logo	应用领域
立锜 - RICHTEK		转换器
页数	文件大小	规格书
11页	295K
描述
Dual 1A 1.5MHz Synchronous Step-Down Converters

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RT8056GQW 数据手册

RT8056

Dual 1A 1.5MHz Synchronous Step-Down Converters

General Description

Features

^z2.8V to 5.5V Input Voltage Range

The RT8056 is a high efficiency synchronous dual step-

down converter. Capable of delivering two independent 1A

output current over a wide input voltage range from 2.8V

to 5.5V. The RT8056 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 and hand-held devices. The RT8056

provides two operation modes including PWM/Low-

Dropout auto switch and shutdown modes. 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 RT8056

enters Low-Dropout mode when normal PWM cannot

provide regulated output voltage by continuously turning

on the upper P-MOSFET. The RT8056 enters shut-down

mode and consumes less than 0.1μA when EN pin is

pulled low. The switching ripple is easily smoothed-out

by small package filtering elements due to a fixed

operating frequency of 1.5MHz.

^z1.5MHz Fixed Frequency PWM Operation

^z2 x 1A Output Current

^zUp to 95% Efficiency

^zNo Schottky Diode Required

^z0.6V Reference Allows for Low Output Voltage

^zLow Dropout Operation : 100% Duty Cycle

^zSmall 10-Lead WDFN Package

^zRoHS Compliant and Halogen Free

Applications

z Portable Instruments

z Microprocessors and DSP Core Supplies

z Cellular Phones

z Wireless and DSL Modems

z PC Cards

z Set Top Box

Pin Configurations

(TOP VIEW)

Ordering Information

RT8056

FB2

VIN

FB1

LX2

EN2

GND

EN1

LX1

Package Type

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

Lead Plating System

G : Green (Halogen Free and Pb Free)

WDFN-10L 3x3

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.

Marking Information

JM= : Product Code

JM=YM

DNN

YMDNN : Date Code

DS8056-02 April 2011

www.richtek.com

12 3 4 5 6 7...11

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