Datasheet > RT8008-10QB

RT8008-10QB

更新时间： 2022-04-23 23:00:11

品牌	Logo	应用领域
立锜 - RICHTEK		转换器
页数	文件大小	规格书
14页	210K
描述
1.5MHz, 600mA, High Efficiency PWM Step-Down DC/DC Converter

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RT8008-10QB 数据手册

RT8008

1.5MHz, 600mA, High Efficiency PWM Step-Down DC/DC

Converter

General Description

Features

l +2.5V to +5.5V Input Range

The RT8008 is a high-efficiency pulse-width-modulated

(PWM) step-downDC-DC converter. Capable of delivering

600mA output current over a wide input voltage range from

2.5V to 5.5V, the RT8008 is ideally suited for portable

electronic devices that are powered from 1-cell Li-ion

battery or from other power sources within the range such

as cellular phones, PDAs and handy-terminals.

l Adjustable Output From 0.6V to V_IN

l 1.0V, 1.2V, 1.5V, 1.8V, 2.5V and 3.3V Fixed/

Adjustable Output Voltage

l 600mA Output Current, 1A Peak Current

l 95% Efficiency

l No Schottky Diode Required

l 1.5MHz Fixed-Frequency PWM Operation

l Small SOT-23-5 and TSOT-23-5 Package

l RoHS Compliant and 100% Lead (Pb)-Free

Internal synchronous rectifier with low R_DS(ON)dramatically

reduces conduction loss at PWM mode. No external

Schottky diode is required in practical application. The

RT8008 automatically turns off the synchronous rectifier

while the inductor current is low and enters discontinuous

PWM mode. This can increase efficiency at light load

condition.

Applications

l CellularTelephones

l Personal InformationAppliances

l Wireless andDSL Modems

l MP3 Players

TheRT8008entersLow-Dropout mode when normal PWM

cannot provide regulated output voltage by continuously

turning on the upper P-MOSFET. RT8008 enter shutdown

mode and consumes less than 0.1mA when EN pin is pulled

low.

l Portable Instruments

Ordering Information

RT8008(-

)

Package Type

B : SOT-23-5

J5 : TSOT-23-5

The switching ripple is easily smoothed-out by small

package filtering elements due to a fixed operation

frequency of 1.5MHz. This along with small SOT-23-5 and

TSOT-23-5 package provides small PCB area application.

Other features include soft start, lower internal reference

voltage with 2% accuracy, over temperature protection,

and over current protection.

Operating Temperature Range

P : Pb Free with Commercial Standard

G : Green (Halogen Free with Commer-

cial Standard)

Output Voltage

Default : Adjustable

10 : 1.0V

Pin Configurations

12 : 1.2V

(TOP VIEW)

15 : 1.5V

18 : 1.8V

25 : 2.5V

33 : 3.3V

FB/VOUT

VIN

GND

Note :

RichTek Pb-free and Green products are :

}RoHS compliant and compatible with the current require-

ments of IPC/JEDEC J-STD-020.

SOT-23-5/TSOT-23-5

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

}100% matte tin (Sn) plating.

DS8008-04 March 2007

www.richtek.com

12 3 4 5 6 7...14

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