30

40

50

60

70

80

90

IO − Output Current − mA

VI = 2.0 V

0.1

10

100

1000

1

VI = 2.4 V

VI = 2.7 V

IN

OUT

TPS60140

IN

FB

LBI

LBO

Low

Battery

Warning

Output

5 V, 100 mA

Co

10 µF

R3

R1

R2

C2+

C2−

C2

2.2 µF

C1+

C1−

C1

2.2 µF

NC

ENABLE

PGND

GND

OFF/ON

Ci

4.7 µF

Input

1.8 V to 3.6 V

Product

Folder

Sample &

Buy

Technical

Documents

Tools &

Software

Support &

Community

TPS60140, TPS60141

SLVS273A – FEBRUARY 2000 – REVISED NOVEMBER 2015

TPS6014x Low Power DC-DC Converter Regulated 5-V,

100-mA Charge Pump Voltage Tripler

1 Features

3 Description

The TPS6014x step-up, regulated charge pumps

1

•

Regulated 5 V ±4% Output Voltage

generate a 5-V ±4% output voltage from a 1.8-V to

•

Up to 100-mA Output Current

3.6-V input voltage range. The devices are typically

•

1.8-V to 3.6-V Input Voltage Range

powered by two alkaline, NiCd, or NiMH battery cells

and provide an output current of minimum 100 mA

•

65-µA Quiescent Supply Current

from a 2-V input. Only four external capacitors are

•

0.05-µA Shutdown Current, Battery Is Isolated

needed to build a complete voltage tripler charge

From Load in Shutdown

pump.

•

Integrated Low-Battery or Power-Good Indicator

The devices regulate the output by using the pulse-

•

Low-Output Voltage Ripple Over Complete Output

skip topology. The controller is optimized for lowest

Current Range

output voltage ripple over the complete output current

•

Easy-to-Design With Low-EMI Power Supply

range. The output peak current and therefore the

output

voltage

ripple

are

drastically

reduced

Because No Inductors Are Required

compared to a conventional pulse-skip topology by

•

Evaluation Module Available (TPS60140EVM-144)

regulating the charge pump output resistance. At light

•

Available in a 6.5-mm × 4.4-mm 20-Pin HTSSOP

loads the maximum output resistance is limited to

Package

assure a low quiescent current.

The TPS60140 includes a low-battery comparator

2 Applications

that issues a warning if the battery voltage drops

•

Replacement of DC-DC Converters With Inductors

below

a

user-adjustable

threshold

voltage.

The

in Battery-Powered Applications:

TPS60141 features a power-good output that goes

active when the output voltage reaches 90% of its

–

Two Battery Cells to 5-V Conversions

nominal value.

–

Portable Instruments

–

Miniature Equipment

Device Information(1)

–

Backup-Battery Boost Converters

PART NUMBER

PACKAGE

BODY SIZE (NOM)

TPS6014x

HTSSOP (20)

6.50 mm × 4.40 mm

–

Medical Instruments

–

5-V Smart Card Supplies

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

the end of the data sheet.

Typical Application Schematic

Efficiency vs Output Current

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.