TPS60140 Datasheet, PDF (1/25 Pages) Texas Instruments – LOW POWER DC-DC CONVERTER REGULATED 5 V, 100-mA CHARGE PUMP VOLTAGE TRIPLER

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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
•1 Regulated 5 V ±4% Output Voltage
• Up to 100-mA Output Current
• 1.8-V to 3.6-V Input Voltage Range
• 65-µA Quiescent Supply Current
• 0.05-µA Shutdown Current, Battery Is Isolated
From Load in Shutdown
• Integrated Low-Battery or Power-Good Indicator
• Low-Output Voltage Ripple Over Complete Output
Current Range
• Easy-to-Design With Low-EMI Power Supply
Because No Inductors Are Required
• Evaluation Module Available (TPS60140EVM-144)
• Available in a 6.5-mm × 4.4-mm 20-Pin HTSSOP
Package
2 Applications
• Replacement of DC-DC Converters With Inductors
in Battery-Powered Applications:
– Two Battery Cells to 5-V Conversions
– Portable Instruments
– Miniature Equipment
– Backup-Battery Boost Converters
– Medical Instruments
– 5-V Smart Card Supplies
Typical Application Schematic
Input
1.8 V to 3.6 V
R1
TPS60140
IN
OUT
IN
FB
Output
5 V, 100 mA
Co
10 µF
R2
Ci
4.7 µF
C1
2.2 µF
LBI
LBO
C1+
C2+
C1−
C2−
ENABLE NC
R3 _Low
Battery
Warning
C2
2.2 µF
OFF/ON
PGND GND
3 Description
The TPS6014x step-up, regulated charge pumps
generate a 5-V ±4% output voltage from a 1.8-V to
3.6-V input voltage range. The devices are typically
powered by two alkaline, NiCd, or NiMH battery cells
and provide an output current of minimum 100 mA
from a 2-V input. Only four external capacitors are
needed to build a complete voltage tripler charge
pump.
The devices regulate the output by using the pulse-
skip topology. The controller is optimized for lowest
output voltage ripple over the complete output current
range. The output peak current and therefore the
output voltage ripple are drastically reduced
compared to a conventional pulse-skip topology by
regulating the charge pump output resistance. At light
loads the maximum output resistance is limited to
assure a low quiescent current.
The TPS60140 includes a low-battery comparator
that issues a warning if the battery voltage drops
below a user-adjustable threshold voltage. The
TPS60141 features a power-good output that goes
active when the output voltage reaches 90% of its
nominal value.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS6014x
HTSSOP (20)
6.50 mm × 4.40 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Efficiency vs Output Current
90
80
VI = 2.0 V
VI = 2.4 V
70
VI = 2.7 V
60
50
40
30
0.1
1
10
100
IO − Output Current − mA
1000
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.