TPS62590

更新时间： 2024-11-15 12:47:11

品牌	Logo	应用领域
德州仪器 - TI		转换器
页数	文件大小	规格书
24页	637K
描述
1-A Step Down Converter in 2 x 2 QFN Package

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TPS62590 数据手册

TPS62590

www.ti.com

SLVS897B –JANUARY 2009–REVISED APRIL 2011

1-A Step Down Converter in 2 x 2 QFN Package

Check for Samples: TPS62590

FEATURES

DESCRIPTION

The TPS62590 device is

high efficiency

•

Output Current up to 1000 mA

synchronous step down converter, optimized for

battery powered portable applications. It provides up

to 1000-mA output current from batteries, such as

single Li-Ion or other common chemistry AA and AAA

cells.

Input Voltage Range from 2.5 V to 5.5 V

Output Voltage Accuracy in PWM mode ±2.5%

Typ. 15-μA Quiescent Current

100% Duty Cycle for Lowest Dropout

Available in a 2 × 2 × 0.8 mm QFN Package

For Improved Features Set, See TPS62290

With an input voltage range of 2.5 V to 5.5 V, the

device is targeted to power a large variety of portable

handheld equipment or POL applications.

The TPS62590 family operates at 2.25-MHz fixed

switching frequency and enters a Power Save Mode

operation at light load currents to maintain a high

efficiency over the entire load current range.

APPLICATIONS

•

Portable Handheld

WLAN

Low Power DSP Supply

POL

The Power Save Mode is optimized for low output

voltage ripple. For low noise applications, the device

can be forced into fixed frequency PWM mode by

pulling the MODE pin high. In the shutdown mode the

current consumption is reduced to less than 1 µA.

The TPS62590 allows the use of small inductors and

capacitors to achieve a small solution size.

The TPS62590 is available in a 2-mm × 2-mm 6-pin

QFN package.

Empty para

100

TPS62590DRV

VIN

2.2 mH

OUT

2.5 V to 5.5 V

V = 5 V

0.75 V to V

V = 4.2 V

C_IN

22pF

V = 3.8 V

10mF

MODE

C_OUT

10mF

GND

PwrPAD

V_OUT= 3.3 V,

MODE = GND,

0.0001

0.001

0.01

- Output Current - A

0.1

Typical Application

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PowerPAD is a trademark of Texas Instruments.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...24

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与TPS62590相关器件

型号	品牌	获取价格	描述	数据表
TPS62590_15	TI	获取价格	1-A Step Down Converter
TPS62590_17	TI	获取价格	1-A Step Down Converter in 2-mm x 2-mm WSON Package
TPS62590DRVR	TI	获取价格	1-A Step Down Converter in 2 x 2 QFN Package
TPS62590DRVT	TI	获取价格	1-A Step Down Converter in 2 x 2 QFN Package
TPS62590-Q1	TI	获取价格	1-A Step-Down Converter in 2-mm Ã 2-mm QFN P
TPS62590TDRVRQ1	TI	获取价格	1-A Step-Down Converter in 2-mm Ã 2-mm QFN P
TPS625-B	TOSHIBA	获取价格	Photo Transistor, PHOTO DARLINGTON DETECTOR
TPS626	TOSHIBA	获取价格	TOSHIBA PHOTO DARLINGTON TRANSISTOR SILICON NPN EPITAXIAL PLANAR
TPS626(A)	TOSHIBA	获取价格	Photo Transistor, PHOTO DARLINGTON DETECTOR
TPS626(B)	TOSHIBA	获取价格	暂无描述

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