Datasheet > TPS62040_12

TPS62040_12

更新时间： 2024-11-21 12:16:15

品牌	Logo	应用领域
德州仪器 - TI		转换器功效
页数	文件大小	规格书
30页	944K
描述
1.2 A/1.25 MHz, HIGH-EFFICIENCY STEP-DOWN CONVERTER

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TPS62040_12 数据手册

TPS62040

TPS62042, TPS62043

TPS62044, TPS62046

www.ti.com

SLVS463B − JUNE 2003 − REVISED OCTOBER 2005

1.2 A/1.25 MHz, HIGH-EFFICIENCY STEP-DOWN CONVERTER

USB Powered Modems

FEATURES

CPUs and DSPs

Up to 95% Conversion Efficiency

Typical Quiescent Current: 18 µA

Load Current: 1.2 A

PC Cards and Notebooks

xDSL Applications

Standard 5-V to 3.3-V Conversion

Operating Input Voltage Range: 2.5 V to 6.0 V

Switching Frequency: 1.25 MHz

Adjustable and Fixed Output Voltage

DESCRIPTION

The TPS6204x family of devices are high efficiency

synchronous step-down dc-dc converters optimized for

battery powered portable applications. The devices are

ideal for portable applications powered by a single Li-Ion

battery cell or by 3-cell NiMH/NiCd batteries. With an

output voltage range from 6.0 V down to 0.7 V, the devices

support low voltage DSPs and processors in PDAs,

pocket PCs, as well as notebooks and subnotebook

computers. The TPS6204x operates at a fixed switching

frequency of 1.25 MHz and enters the power save mode

operation at light load currents to maintain high efficiency

over the entire load current range. For low noise

applications, the devices can be forced into fixed

frequency PWM mode by pulling the MODE pin high. The

TPS6204x supports up to 1.2-A load current.

Power Save Mode Operation at Light load

Currents

100% Duty Cycle for Lowest Dropout

Internal Softstart

Dynamic Output Voltage Positioning

Thermal Shutdown

Short-Circuit Protection

10 Pin MSOP PowerPad™ Package

10 Pin QFN 3 X 3 mm Package

APPLICATIONS

PDA, Pocket PC and Smart Phones

EFFICIENCY

LOAD CURRENT

100

= 1.8 V

Typical Application Circuit 1.2-A Output Current

V = 2.7 V

V = 3.6 V

TPS6204x

6.2 µH

0.7 V to V /1.2 A

2.5 V to 6 V

V = 5 V

VIN

22 µF

PGND

MODE

GND

MODE = Low

PGND

V = 3.6 V

MODE = High

0.01

0.1

100

1 k

10 k

− Load Current − mA

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 Texas Instruments standard warranty.

Production processing does not necessarily include testing of all parameters.

12 3 4 5 6 7...30

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与TPS62040_12相关器件

型号	品牌	获取价格	描述	数据表
TPS62040_16	TI	获取价格	1.2 A/1.25 MHz, HIGH-EFFICIENCY STEP-DOWN CONVERTER
TPS62040_17	TI	获取价格	1.2 A/1.25 MHz, HIGH-EFFICIENCY STEP-DOWN CONVERTER
TPS62040DGQ	TI	获取价格	1.2 A/1.25 MHZ, HIGH EFFICIENCY STEP DOWN CONVERTER
TPS62040DGQG4	TI	获取价格	1.2 A/1.25 MHz, HIGH-EFFICIENCY STEP-DOWN CONVERTER
TPS62040DGQR	TI	获取价格	1.2 A/1.25 MHz, HIGH-EFFICIENCY STEP-DOWN CONVERTER
TPS62040DGQRG4	TI	获取价格	1.2 A/1.25 MHz, HIGH-EFFICIENCY STEP-DOWN CONVERTER
TPS62040DRC	TI	获取价格	1.2 A/1.25 MHZ, HIGH EFFICIENCY STEP DOWN CONVERTER
TPS62040DRCR	TI	获取价格	1.2 A/1.25 MHz, HIGH-EFFICIENCY STEP-DOWN CONVERTER
TPS62040DRCRG4	TI	获取价格	1.2 A/1.25 MHz, HIGH-EFFICIENCY STEP-DOWN CONVERTER
TPS62042	TI	获取价格	1.2 A/1.25 MHZ, HIGH EFFICIENCY STEP DOWN CONVERTER

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