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TPS61253YFF

更新时间： 2024-11-15 11:46:15

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
34页	6073K
描述
3.5-MHz HIGH EFFICIENCY STEP-UP CONVERTER IN CHIP SCALE PACKAGING

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TPS61253YFF 数据手册

TPS61253, TPS61254, TPS61256, TPS61258

www.ti.com

SLVSAG8B –SEPTEMBER 2011–REVISED MAY 2012

3.5-MHz HIGH EFFICIENCY STEP-UP CONVERTER IN CHIP SCALE PACKAGING

Check for Samples: TPS61253, TPS61254, TPS61256, TPS61258

FEATURES

DESCRIPTION

•

93% Efficiency at 3.5MHz Operation

22µA Quiescent Current in Standby Mode

36µA Quiescent Current in Normal Operation

Wide V_INRange From 2.3V to 5.5V

The TPS6125x device provides a power supply

solution for battery-powered portable applications.

Intended for low-power applications, the TPS6125x

supports up to 800-mA load current from a battery

discharged as low as 2.65V and allows the use of low

cost chip inductor and capacitors.

V_IN≥ V_OUTOperation

I_OUT≥800mA at V_OUT= 4.5V, V_IN≥2.65V

I_OUT≥1000mA at V_OUT= 5.0V, V_IN≥3.3V

I_OUT≥1500mA (Peak) at V_OUT= 5.0V, V_IN≥3.3V

With a wide input voltage range of 2.3V to 5.5V, the

device supports applications powered by Li-Ion

batteries with extended voltage range. Different fixed

voltage output versions are available from 3.15V to

5.0V.

±2% Total DC Voltage Accuracy

Light-Load PFM Mode

The TPS6125x operates at a regulated 3.5-MHz

switching frequency and enters power-save mode

operation at light load currents to maintain high

efficiency over the entire load current range. The

PFM mode extends the battery life by reducing the

quiescent current to 36μA (typ) during light load

operation.

Selectable Standby Mode or True Load

Disconnect During Shutdown

•

Thermal Shutdown and Overload Protection

Only Three Surface-Mount External

Components Required

Total Solution Size <25mm²

9-Pin NanoFree^TM(CSP) Packaging

•

In addition, the TPS6125x device can also maintain

its output biased at the input voltage level. In this

mode, the synchronous rectifier is current limited

allowing external load (e.g. audio amplifier) to be

powered with a restricted supply. In this mode, the

quiescent current is reduced to 22µA. Input current in

shutdown mode is less than 1µA (typ), which

maximizes battery life.

APPLICATIONS

•

Cell Phones, Smart-Phones

Mono and Stereo APA Applications

USB Charging Port (5V)

The TPS6125x offers a very small solution size due

to minimum amount of external components. It allows

the use of small inductors and input capacitors to

achieve a small solution size. During shutdown, the

load is completely disconnected from the battery.

spacer

V_O= 5.0 V

100

V_OUT

5.0 V @ 700mA

TPS61256

VIN

VOUT

V_IN

2.65 V .. 4.85 V

1 μH

C_O

10 uF

C_I

4.7 μF

GND

Figure 2. Smallest Solution Size Application

Figure 1. Efficiency vs. Load Current

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.

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...34

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与TPS61253YFF相关器件

型号	品牌	获取价格	描述	数据表
TPS61253YFFR	TI	获取价格	3.5-MHz HIGH EFFICIENCY STEP-UP CONVERTER IN CHIP SCALE PACKAGING
TPS61253YFFT	TI	获取价格	3.5-MHz HIGH EFFICIENCY STEP-UP CONVERTER IN CHIP SCALE PACKAGING
TPS61254	TI	获取价格	3.5-MHz HIGH EFFICIENCY STEP-UP CONVERTER IN CHIP SCALE PACKAGING
TPS61254A	TI	获取价格	TPS61253A 3.8-MHz, 5-V / 4-A Boost Converter in 1.2-mm x 1.3-mm WCSP
TPS61254YFF	TI	获取价格	3.5-MHz HIGH EFFICIENCY STEP-UP CONVERTER IN CHIP SCALE PACKAGING
TPS61254YFFR	TI	获取价格	3.5-MHz HIGH EFFICIENCY STEP-UP CONVERTER IN CHIP SCALE PACKAGING
TPS61254YFFT	TI	获取价格	3.5-MHz HIGH EFFICIENCY STEP-UP CONVERTER IN CHIP SCALE PACKAGING
TPS61255	TI	获取价格	3.5-MHz HIGH EFFICIENCY STEP-UP CONVERTER IN CHIP SCALE PACKAGING
TPS61255A	TI	获取价格	TPS61253A 3.8-MHz, 5-V / 4-A Boost Converter in 1.2-mm x 1.3-mm WCSP
TPS61255YFF	TI	获取价格	3.5-MHz HIGH EFFICIENCY STEP-UP CONVERTER IN CHIP SCALE PACKAGING

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