TPS62731

更新时间： 2024-11-15 08:38:43

品牌	Logo	应用领域
德州仪器 - TI		转换器无线
页数	文件大小	规格书
27页	4702K
描述
Step Down Converter with Bypass Mode for Ultra Low Power Wireless Applications

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TPS62731 数据手册

TPS62730

www.ti.com

SLVSAC3 –MAY 2011

Step Down Converter with Bypass Mode for Ultra Low Power Wireless Applications

Check for Samples: TPS62730

FEATURES

DESCRIPTION

The TPS62730 is a high frequency synchronous step

down DC-DC converter optimized for ultra low power

wireless applications. The device is optimized to

supply TI's Low Power Wireless sub 1GHz and

•

Input Voltage Range V_INfrom 1.9V to 3.9V

Typ. 30nA Ultra Low Power Bypass Mode

Typ. 25 μA DC/DC Quiescent Current

Internal Feedback Divider Disconnect

Typ. 2.1Ω Bypass Switch between V_INand V_OUT

2.4GHz

transceivers

and

System-On-Chip-solutions. The TPS62730 reduces

the current consumption drawn from the battery

during TX and RX mode by a high efficient step down

voltage conversion. It provides up to 100mA output

current and allows the use of tiny and low cost chip

inductors and capacitors. With an input voltage range

of 1.9V to 3.9V the device supports Li-primary battery

chemistries such as Li-SOCl2, Li-SO2, Li-MnO2 and

also two cell alkaline batteries.

Automatic Transition from DC/DC to Bypass

Mode

•

Up To 3MHz switch frequency

Up to 95% DC/DC Efficiency

Open Drain Status Output STAT

Output Peak Current up to 100mA

Fixed Output Voltage 2.1V

Small External Output Filter Components

2.2μH/ 2.2μF

Optimized For Low Output Ripple Voltage

Small 1 × 1.5 × 0.6mm³SON Package

12 mm²Minimum Solution Size

The TPS62730 features an Ultra Low Power bypass

mode with typical 30nA current consumption to

support sleep and low power modes of TI's CC2540

Bluetooth Low Energy and CC430 System-On-Chip

solutions. In this bypass mode, the output capacitor

of the DC/DC converter is connected via an

integrated typ. 2.1Ω Bypass switch to the battery.

•

APPLICATIONS

In DC/DC operation mode the device provides a

regulated output voltage of 2.1V to the system. With a

switch frequency up to 3MHz, the TPS62730 features

low output ripple voltage and low noise even with a

small 2.2uF output capacitor. The automatic transition

into bypass mode during DC/DC operation prevents

an increase of output ripple voltage and noise once

the DC/DC converter operates close to 100% duty

cycle. The device automatically enters bypass mode

once the battery voltage falls below the transition

threshold V_{IT BYP}. The TPS62730 is available in a 1 ×

1.5mm²6 pin QFN package.

•

CC2540 Bluetooth Low Energy

System-On-Chip Solution

Low Power Wireless Applications

RF4CE, Metering

•

I_BATNO TPS62730

Battery Current

Reduction @

CC2540

0dBm CW TX

Power

V_OUT

2.1V

V_IN

2.2V - 3.9V*

TPS62730

L 2.2mH

VIN

I_BATWith TPS62730

VOUT

GND

C_OUT

2.2µF

R_pullup

C_IN

2.2µF

BYP

Battery Current Reduction of CC2540

2.4GHz Bluetooth Low Energy

System-On-Chip Solution

ON/BYP STAT

* At V_IN< 2.2V, V_OUTtracks V_IN

2.2 2.4 2.6 2.8

3.2 3.4 3.6 3.8

Battery Voltage - V_BAT

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 the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...27

中文翻译

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与TPS62731相关器件

型号	品牌	获取价格	描述	数据表
TPS62731DRY	TI	获取价格	Step Down Converter with Bypass Mode for Ultra Low Power Wireless
TPS62731DRYR	TI	获取价格	SWITCHING REGULATOR, 3000kHz SWITCHING FREQ-MAX, PDSO6, 1 X 1.50 MM, 0.60 MM HEIGHT, PLAST
TPS62731DRYT	TI	获取价格	SWITCHING REGULATOR, 3000kHz SWITCHING FREQ-MAX, PDSO6, 1 X 1.50 MM, 0.60 MM HEIGHT, PLAST
TPS62732	TI	获取价格	Step Down Converter with Bypass Mode for Ultra Low Power Wireless Applications
TPS62732DRY	TI	获取价格	Step Down Converter with Bypass Mode for Ultra Low Power Wireless
TPS62732DRYR	TI	获取价格	Step Down Converter with Bypass Mode for Ultra Low Power Wireless Applications
TPS62732DRYT	TI	获取价格	Step Down Converter with Bypass Mode for Ultra Low Power Wireless Applications
TPS62733	TI	获取价格	Step Down Converter with Bypass Mode for Ultra Low Power Wireless Applications
TPS62733DRYR	TI	获取价格	Step Down Converter with Bypass Mode for Ultra Low Power Wireless Applications
TPS62733DRYT	TI	获取价格	Step Down Converter with Bypass Mode for Ultra Low Power Wireless Applications

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