SW

VIN

EN

VOUT

MODE

GND

VIN

VOUT

L

OFF

ON

Forced PWM (High)

Auto PFM (Low)

Ultrasonic (Floating)

Product

Folder

Order

Now

Technical

Documents

Tools &

Software

Support &

Community

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.

TPS61253A

SLVSDE4 – MARCH 2017

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

1

1 Features

1

•

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

•

•

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

•

•

Create a Custom Design Using the TPS61253A

With the WEBENCH® Power Designer

2 Applications

•

Smart Phones

•

Portable Speaker

•

USB Charging Ports

•

NFC PA Supply

•

Li Battery to 5-V Power Conversion

3 Description

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

could

be

flexibly configured at the Auto PFM mode, forced

PWM mode or ultrasonic mode. The Auto PFM mode

could 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.

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

the inrush current at startup. 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-

uA current being consumed.

The TPS6125xA comes in a 9-ball 1.2-mm x 1.3-mm

WCSP package and offers a very small solution size

with the minimum amount of external components.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

TPS6125xA

DSBGA (9)

1.2 mm x 1.3 mm

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

the end of the data sheet.

Typical Schematic