Datasheet > TPS61255A

TPS61255A

更新时间： 2024-11-16 02:48:47

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德州仪器 - TI		/
页数	文件大小	规格书
34页	2464K
描述
TPS61253A 3.8-MHz, 5-V / 4-A Boost Converter in 1.2-mm x 1.3-mm WCSP

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TPS61255A 数据手册

TPS61253A

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SLVSDE4C – MARCH 2017 – REVISED NOVEMBER 2020

TPS61253A 3.8-MHz, 5-V / 4-A Boost Converter in 1.2-mm x 1.3-mm WCSP

1 Features

3 Description

•

Wide input voltage range from 2.3 V to 5.5 V

Fixed output voltage: 4.5 / 4.7 / 5.0 / 5.2 V

Two FETs integrated: 35-mΩ LS-FET, 60-mΩ HS-

FET

IOUT ≥ 1500-mA continuously at VOUT = 5 V and

VIN ≥ 3 V

42-µA quiescent current from input

4-A switching valley current limit

3.8-MHz switching frequency

Selectable auto PFM, forced PWM, and ultrasonic

mode

Support pass-through mode

±2% output voltage accuracy

600-µs soft-start time

Hiccup-mode short protection

Load disconnection during shutdown

Thermal shutdown

The TPS6125xA device provides a power supply

solution for battery-powered portable applications.

With the input voltage ranging from 2.3 V to 5.5 V, the

device supports the applications powered by the Li-

Ion batteries with the extended voltage range.

Different fixed output voltage versions are available of

4.5 V, 4.7 V, 5 V, and 5.2 V. The TPS6125xA supports

up to 1500-mA load current from a battery discharged

as low as 3 V.

•

The TPS6125xA operates at typical 3.8-MHz

switching frequency. The TPS6125xA can be flexibly

configured at the Auto PFM mode, forced PWM

mode, or ultrasonic mode. The Auto PFM mode can

benefit with the high efficiency at the light load. The

forced PWM operation can make the switching

frequency be constant crossing the whole load range.

The ultrasonic mode keeps the switching frequency

always larger than 25 kHz at any load condition to

avoid the acoustic noise.

•

Total solution size < 25 mm²

Create a custom design using the TPS61253A

with the WEBENCH® Power Designer

TPS6125xA has a built-in 600-µs soft start to avoid

the inrush current at start-up. When the output is

shorted, the device enters into the hiccup mode and

recovers automatically after the short releases. During

the shutdown, the load is completely disconnected

from the input end with maximum 1.3-μA current

being consumed.

2 Applications

•

Smart phones

Portable speaker

USB charging ports

NFC PA supply

Li battery to 5-V power conversion

Device Information

PART NUMBER

PACKAGE⁽¹⁾

BODY SIZE (NOM)

TPS61253A

DSBGA (9)

1.2 mm × 1.3 mm

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

VOUT

VIN

C_IN

VIN

VOUT

C_OUT

Forced PWM (High)

Ultrasonic (Floating)

Auto PFM (Low)

MODE

GND

OFF

Typical Schematic

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

Product Folder Links: TPS61253A

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与TPS61255A相关器件

型号	品牌	获取价格	描述	数据表
TPS61255YFF	TI	获取价格	3.5-MHz HIGH EFFICIENCY STEP-UP CONVERTER IN CHIP SCALE PACKAGING
TPS61256	TI	获取价格	3.5-MHz HIGH EFFICIENCY STEP-UP CONVERTER IN CHIP SCALE PACKAGING
TPS612561A	TI	获取价格	TPS61253A 3.8-MHz, 5-V / 4-A Boost Converter in 1.2-mm x 1.3-mm WCSP
TPS612562CYFFR	TI	获取价格	采用 1.2mm x 1.3mm WCSP 封装且具有直通模式的 3.5MHz、5V、90
TPS612562CYFFT	TI	获取价格	采用 1.2mm x 1.3mm WCSP 封装且具有直通模式的 3.5MHz、5V、90
TPS612564CYFFR	TI	获取价格	采用 1.2mm x 1.3mm WCSP 封装且具有直通模式的 3.5MHz、5V、90
TPS612564CYFFT	TI	获取价格	采用 1.2mm x 1.3mm WCSP 封装且具有直通模式的 3.5MHz、5V、90
TPS61256A	TI	获取价格	采用 1.2mm x 1.3mm WCSP 封装的 3.5MHz、5V、1A 负载升压转换
TPS61256AYFFR	TI	获取价格	采用 1.2mm x 1.3mm WCSP 封装的 3.5MHz、5V、1A 负载升压转换
TPS61256AYFFT	TI	获取价格	采用 1.2mm x 1.3mm WCSP 封装的 3.5MHz、5V、1A 负载升压转换

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