Datasheet > BuckConv> RT8055

RT8055

更新时间： 2024-09-23 12:25:07

品牌	Logo	应用领域
立锜 - RICHTEK		转换器 TI的电源Demo板
页数	文件大小	规格书
14页	324K
描述
3A, 2MHz, Synchronous Step-Down Converter

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技术参数
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RT8055 技术参数

Status：	Active	Vin (min) (V)：	2.6
Vin (max) (V)：	5.5	Number of Outputs：	1
Vout (min) (V)：	0.8	Vout (max) (V)：	5
Preset Vout (V)：		Output Adj. Method：	Resistor
Iout (max) (A)：	3	Current Limit (typ) (A)：	4
Freq (typ) (kHz)：	1800	Freq (min) (kHz)：	300
Freq (max) (kHz)：	2000	Ext Sync：	No
Ron_HS (typ) (mOhm)：	100	Ron_LS (typ) (mOhm)：	100
Iq (typ) (mA)：	0.5	Features：	100% Duty Cycle;Adjustable Frequency;Current Mode Control;Force PWM;OCP;Stable with Ceramic Capacitor;UVP
Package Type：	PSOP-8;WDFN3x3-10

RT8055 数据手册

RT8055

3A, 2MHz, Synchronous Step-Down Converter

General Description

Features

^zHigh Efficiency : Up to 95%

The RT8055 is a high efficiency synchronous, step-down

DC/DC converter. Its input voltage range is from 2.6V to

5.5V and provides an adjustable regulated output voltage

from 0.8V to 5V while delivering up to 3A of output current.

^zLow R_DS(ON)Internal Switches : 100mΩ

^zProgrammable Frequency : 300kHz to 2MHz

^zNo Schottky Diode Required

^z0.8V Reference Voltage Allows for Low Output

Voltage

The internal synchronous low on-resistance power

switches increase efficiency and eliminate the need for

an external Schottky diode. The switching frequency is

set by an external resistor. The 100% duty cycle provides

low dropout operation extending battery life in portable

systems. Current mode operation with external

compensation allows the transient response to be

optimized over a wide range of loads and output capacitors.

^zForced Continuous Mode Operation

^z100% Duty Cycle Operation

^zInput Over Voltage Protection

^zRoHS Compliant and Halogen Free

Applications

z Portable Instruments

z Battery-Powered Equipment

z Notebook Computers

z Distributed Power Systems

z IP Phones

The RT8055 is operated in forced continuous PWM Mode

which minimizes ripple voltage and reduces the noise and

RF interference.

The RT8055 is available in the WDFN-10L 3x3 and

SOP-8 (Exposed Pad) packages.

z Digital Cameras

z 3G/3.5GData Card

Ordering Information

Pin Configurations

RT8055

(TOP VIEW)

Package Type

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

SP : SOP-8 (Exposed Pad-Option 2)

SHDN/RT

GND

COMP

PGND

VDD

Lead Plating System

G : Green (Halogen Free and Pb Free)

Z : ECO (Ecological Element with

Halogen Free and Pb free)

Note :

PVDD

WDFN-10L 3x3

Richtek products are :

SHDN/RT

GND

COMP

` RoHS compliant and compatible with the current require-

ments of IPC/JEDEC J-STD-020.

GND

VDD

PVDD

PGND

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

SOP-8 (Exposed Pad)

is a registered trademark of Richtek Technology Corporation.

DS8055-05 November 2012

www.richtek.com

12 3 4 5 6 7...14

中文翻译

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与RT8055相关器件

型号	品牌	获取价格	描述	数据表
RT8055B	RICHTEK	获取价格	3A, 2MHz, Synchronous Step-Down Converter
RT8055GQW	RICHTEK	获取价格	3A, 2MHz, Synchronous Step-Down Converter
RT8056	RICHTEK	获取价格	Dual 1A 1.5MHz Synchronous Step-Down Converters
RT8056GQW	RICHTEK	获取价格	Dual 1A 1.5MHz Synchronous Step-Down Converters
RT8057	RICHTEK	获取价格	2.25MHz 1A Synchronous Step-Down Converter
RT8057A	RICHTEK	获取价格	2.25MHz 1A Synchronous Step-Down Converter
RT8058	RICHTEK	获取价格	1MHz, 2A, High Efficiency PWM Step-Down DC/DC Converter
RT8058A	RICHTEK	获取价格	1.2MHz, 2A, High Efficiency PWM Step-Down DC/DC Converter
RT8058GQW	RICHTEK	获取价格	1MHz, 2A, High Efficiency PWM Step-Down DC/DC Converter
RT8058PQW	RICHTEK	获取价格	1MHz, 2A, High Efficiency PWM Step-Down DC/DC Converter

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