Datasheet > TPS6205

TPS6205

更新时间： 2024-11-17 22:52:55

品牌	Logo	应用领域
德州仪器 - TI		转换器
页数	文件大小	规格书
21页	425K
描述
800-mA SYNCHRONOUS STEP-DOWN CONVERTER

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TPS6205 数据手册

TPS62050, TPS62051

TPS62052, TPS62054, TPS62056

www.ti.com

SLVS432D–SEPTEMBER 2002–REVISED OCTOBER 2003

800-mA SYNCHRONOUS STEP-DOWN CONVERTER

FEATURES

DESCRIPTION

•

High-Efficiency Synchronous Step-Down

Converter With up to 95% Efficiency

12-µA Quiescent Current (Typ)

2.7-V to 10-V Operating Input Voltage Range

Adjustable Output Voltage Range From 0.7 V

to 6 V

Fixed Output Voltage Options Available in

1.5 V, 1.8 V, and 3.3 V

Synchronizable to External Clock Signal up to

1.2 MHz

High Efficiency Over a Wide Load Current

Range in Power-Save Mode

100% Maximum Duty Cycle for Lowest

Dropout

Low Noise Operation in Forced Fixed

Frequency PWM Operation Mode

Internal Softstart

Overtemperature and Overcurrent Protected

Available in 10-Pin Microsmall Outline

Package MSOP

The TPS6205x devices are a family of high-efficiency

synchronous step-down dc/dc converters ideally suited

for systems powered from a 1-cell or 2-cell Li-Ion

battery or from a 3-cell to 5-cell NiCd, NiMH, or alkaline

battery.

•

The TPS62050 is a synchronous PWM converter with

integrated N-channel and P-channel power MOSFET

switches. Synchronous rectification increases ef-

ficiency and reduces external component count. To

achieve highest efficiency over a wide load current

•

range, the converter enters

power-saving

pulse-frequency modulation (PFM) mode at light load

currents. Operating frequency is typically 850 kHz,

allowing the use of small inductor and capacitor values.

The device can be synchronized to an external clock

signal in the range of 600 kHz to 1.2 MHz. For low noise

operation, the converter can be programmed into

forced-fixed frequency in PWM mode. In shutdown

mode, the current consumption is reduced to less than

2 µA. The TPS6205x is available in the 10-pin (DGS)

micro-small outline package (MSOP) and operates

over an free air temperature range of -40°C to 85°C.

•

APPLICATIONS

•

Cellular Phones

Organizers, PDAs, and Handheld PCs

Low Power DSP Supply

Digital Cameras and Hard Disks

TPS62050

EFFICIENCY

TYPICAL APPLICATION CIRCUIT

V = 3.3 V to 10 V

L1 = 10 µH

V = 1.5 V / 800 mA

OUTPUT CURRENT

VIN

100

TPS62052

C = 10 µF

LBI

= 22 µF

SYNC

GND

LBO

PGND

V = 7.2 V,

= 5 V,

SYNC = L

0.01

0.1

100

1 k

– Output Current – mA

MATHCAD is a trademark of Mathsoft Incorporated.

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.

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 in-

cludetestingofallparameters.

12 3 4 5 6 7...21

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与TPS6205相关器件

型号	品牌	获取价格	描述	数据表
TPS62050	TI	获取价格	800-mA SYNCHRONOUS STEP-DOWN CONVERTER
TPS62050DGS	TI	获取价格	800-mA SYNCHRONOUS STEP-DOWN CONVERTER
TPS62050DGSG4	TI	获取价格	800-mA SYNCHRONOUS STEP-DOWN CONVERTER
TPS62050DGSR	TI	获取价格	800-mA SYNCHRONOUS STEP-DOWN CONVERTER
TPS62050DGSRG4	TI	获取价格	800-mA SYNCHRONOUS STEP-DOWN CONVERTER
TPS62051	TI	获取价格	800-mA SYNCHRONOUS STEP-DOWN CONVERTER
TPS62051DGS	TI	获取价格	800-mA SYNCHRONOUS STEP-DOWN CONVERTER
TPS62051DGSG4	TI	获取价格	800-mA SYNCHRONOUS STEP-DOWN CONVERTER
TPS62051DGSR	TI	获取价格	800-mA SYNCHRONOUS STEP-DOWN CONVERTER
TPS62051DGSRG4	TI	获取价格	800-mA SYNCHRONOUS STEP-DOWN CONVERTER

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