Datasheet > RT8059GJ5

RT8059GJ5

更新时间： 2024-09-24 11:46:35

品牌	Logo	应用领域
立锜 - RICHTEK		/
页数	文件大小	规格书
10页	303K
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RT8059GJ5 数据手册

RT8059

1.5MHz, 1A, High Efficiency PWM Step-Down DC/DC Converter

General Description

Features

^zWide Input Voltage from 2.8V to 5.5V

^zAdjustable Output from 0.6V to V_IN

^z1A Output Current

The RT8059 is a high efficiency Pulse Width Modulated

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

1A output current over a wide input voltage range from

2.8V to 5.5V. The RT8059 is ideally suited for portable

electronic devices that are powered by 1-cell Li-ion battery

or by other power sources within the range, such as cellular

phones, PDAs and handy-terminals.

^z95% Efficiency

^zNo Schottky Diode Required

^z1.5MHz Fixed Frequency PWM Operation

^zSmall TSOT-23-5 Package

^zRoHS Compliant and Halogen Free

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

RT8059 automatically turns off the synchronous rectifier

when the inductor current is low and enters discontinuous

PWM mode. This can increase efficiency in light load

condition.

Applications

z NIC Card

z CellularTelephones

z Personal InformationAppliances

z Wireless and DSL Modems

z MP3 Players

The RT8059 enters low dropout mode when normal PWM

cannot provide regulated output voltage by continuously

turning on the upper P-MOSFET. The RT8059 enters

shutdown mode and consumes less than 0.1μAwhen the

EN pin is pulled low.

z Portable Instruments

Pin Configurations

(TOP VIEW)

VIN

The switching ripple can be easily smoothed out by small

package filtering elements due to a fixed operation

frequency of 1.5MHz. This along with small 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.

GND LX

TSOT-23-5

Marking Information

BQ= : Product Code

Ordering Information

BQ=DNN

RT8059

DNN : Date Code

Package Type

J5 : TSOT-23-5

Lead Plating System

G : Green (Halogen Free and Pb Free)

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.

is a registered trademark of Richtek Technology Corporation.

DS8059-04 December 2011

www.richtek.com

12 3 4 5 6 7...10

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