Datasheet > TPS62730_12

TPS62730_12

更新时间： 2024-11-15 12:00:35

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
28页	5294K
描述
Step Down Converter with Bypass Mode for Ultra Low Power Wireless Applications

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TPS62730_12 数据手册

TPS62732, TPS62733

TPS62730

www.ti.com

SLVSAC3C –MAY 2011–REVISED DECEMBER 2012

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

Check for Samples: TPS62732, TPS62733, 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

2.4GHz RF 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.

•

Input Voltage Range V_INfrom 1.9V to 3.9V

Typ. 30 nA 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

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 Voltages 1.9V, 2.05V, 2.1V, 2.3V

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.

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

In DC/DC operation mode the device provides a fixed

output voltage 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 × 1.5mm²

6 pin QFN package.

APPLICATIONS

•

CC2540 Bluetooth™ Low Energy

System-On-Chip Solution

•

Low Power Wireless Applications

RF4CE, Metering

I_BATNO TPS62730

V_OUT

2.1V

Battery Current

Reduction @

CC2540

0dBm CW TX

Power

V_IN

2.2V - 3.9V*

TPS62730

L 2.2mH

VIN

VOUT

GND

C_OUT

2.2µF

R_pullup

C_IN

2.2µF

I_BATWith TPS62730

BYP

ON/BYP STAT

* At V_IN< 2.2V, V_OUTtracks V_IN

Battery Current Reduction of CC2540

2.4GHz Bluetooth Low Energy

System-On-Chip Solution

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.

Bluetooth is a trademark of Bluetooth SIG.

UNLESS OTHERWISE NOTED this document contains

PRODUCTION DATA information 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...28

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与TPS62730_12相关器件

型号	品牌	获取价格	描述	数据表
TPS62730_14	TI	获取价格	Step Down Converter with Bypass Mode for Ultra Low Power Wireless Applications
TPS62730DRY	TI	获取价格	Step Down Converter with Bypass Mode for Ultra Low Power Wireless
TPS62730DRYR	TI	获取价格	Step Down Converter with Bypass Mode for Ultra Low Power Wireless
TPS62730DRYT	TI	获取价格	Step Down Converter with Bypass Mode for Ultra Low Power Wireless
TPS62731	TI	获取价格	Step Down Converter with Bypass Mode for Ultra Low Power Wireless Applications
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

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