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- Output

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V - Input

Voltage

- V

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V = 5.0 V

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Product

Folder

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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. UNLESS OTHERWISE NOTED, this document contains PRODUCTION

DATA.

TPS61253, TPS61254, TPS61256, TPS61258, TPS61259, TPS612592

SLVSAG8G – SEPTEMBER 2011 – REVISED JUNE 2016

TPS6125x 3.5-MHz High Efficiency Step-Up Converter In Chip Scale Packaging

1

1 Features

1

•

93% Efficiency at 3.5-MHz Operation

•

21-µA Quiescent Current in Standby Mode

•

37-µA Quiescent Current in Normal Operation

•

•

•

•

•

V

•

±2% Total DC Voltage Accuracy

•

Light-Load PFM Mode

•

Selectable Standby Mode or True Load

Disconnect During Shutdown

•

Thermal Shutdown and Overload Protection

•

Only Three Surface-Mount External Components

Required

•

•

2 Applications

•

Cell Phones, Smart Phones

•

Mono and Stereo APA Applications

•

USB Charging Ports (5V)

3 Description

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.

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

device supports applications powered by Li-Ion

batteries with extended voltage range. Different fixed

voltage output versions are available from 3.15 V to

5.0 V.

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 37

μA (typ) during light load

operation.

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 21 µA. During

shutdown, the load is completely disconnected from

the battery. Input current in shutdown mode is less

than 1 µA (typ), which maximizes battery life.

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.

PART NUMBER

PACKAGE

BODY SIZE (NOM)

TPS6125x

DSBGA (9)

1.206 mm × 1.306 mm

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

the end of the datasheet.

Efficiency vs Load Current