- 5

- 4

- 3

- 2

- 1

0

0

1

2

3

4

5

TPS60400

3

5

OUT

IN

GND

1

2

4

1

µF

1

µF

Output

-1.6 V to -5.5 V,

Max 60 mA

Input

1.6 V to 5.5 V

1

µF

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TPS60400, TPS60401

TPS60402, TPS60403

SLVS324B – JULY 2001 – REVISED APRIL 2015

TPS6040x Unregulated 60-mA Charge Pump Voltage Inverter

1 Features

3 Description

The TPS6040x family of devices generates an

1

•

Inverts Input Supply Voltage

unregulated negative output voltage from an input

•

Up to 60-mA Output Current

voltage ranging from 1.6 V to 5.5 V. The devices are

•

Only Three Small 1-µF Ceramic Capacitors

typically supplied by a preregulated supply rail of 5 V

Needed

or 3.3 V. Due to its wide input voltage range, two or

three NiCd, NiMH, or alkaline battery cells, as well as

•

Input Voltage Range From 1.6 V to 5.5 V

one Li-Ion cell can also power them.

•

PowerSave-Mode for Improved Efficiency at Low-

Only three external 1-µF capacitors are required to

Output Currents (TPS60400)

build a complete DC-DC charge pump inverter.

•

Device Quiescent Current Typical 65 µA

Assembled in a 5-pin SOT-23 package, the complete

•

Integrated Active Schottky-Diode for Start-up Into

Load

Additional board area and component count reduction

is achieved by replacing the Schottky diode that is

•

Small 5-Pin SOT-23 Package

typically needed for start-up into load by integrated

•

Evaluation Module Available TPS60400EVM-178

circuitry.

2 Applications

The TPS6040x can deliver a maximum output current

of 60 mA with a typical conversion efficiency of

•

LCD Bias

greater than 90% over a wide output current range.

•

GaAs Bias for RF Power Amps

Three device options with 20-kHz, 50-kHz, and 250-

kHz

fixed-frequency

operation

are

available.

•

Sensor Supply in Portable Instruments

TPS60400 comes with a variable switching frequency

•

Bipolar Amplifier Supply

to reduce operating current in applications with a

•

Medical Instruments

wide load range and enables the design with low-

•

Battery-Operated Equipment

value capacitors.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

TPS6040x

SOT-23 (5)

2.90 mm x 1.60 mm

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

the end of the datasheet.

Output Voltage vs Input Voltage

Typical Application

1

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.