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Actual Size
(3,00 mm x 3,00 mm)
TPS72101, TPS72115
TPS72116, TPS72118
SLVS352B 鈥?DECEMBER 2001 鈥?REVISED MAY 2002
LOW INPUT VOLTAGE, CAP FREE 150-mA
LOW-DROPOUT LINEAR REGULATORS
FEATURES
D
150-mA LDO
D
Available in 1.5-V, 1.6-V, 1.8-V Fixed-Output
and Adjustable Versions
voltage (150 mV at full load). Therefore, compared to
many other regulators that require 2.5-V or higher input
voltages for operation, these regulators can be
operated directly from two AAA batteries. Also, the
typical quiescent current (ground pin current) is low,
starting at 85
碌A
during normal operation and 1
碌A
in
shutdown mode. These regulators can be operated
very efficiently and, in a battery-powered application,
help extend the longevity of the device.
Similar LDO regulators require 1-碌F or larger output
capacitors for stability. However, this regulator uses an
internal compensation scheme that stabilizes the
feedback loop over the full range of input voltages and
load currents with output capacitances as low as
0.1-碌F. Ceramic capacitors of this size are relatively
inexpensive and available in small footprints.
This family of regulators is particularly suited as a
portable power supply solution due to its minimal board
space requirement and 1.8-V minimum input voltage.
Being able to use two off-the-shelf, AAA, batteries
makes system design easier and also reduces
component cost. Moreover, the solution will be more
efficient than if a regulator with a higher input voltage is
used.
DBV PACKAGE
(TOP VIEW)
IN
GND
EN
1
2
3
4
NC/FB
5
OUT
D
Low Input Voltage Requirement
(Down to 1.8 V)
D
Small Output Capacitor, 0.1-碌F
D
Dropout Voltage Typically 200 mV at 150 mA
D
Less Than 1
碌A
Quiescent Current in
Shutdown Mode
D
Thermal Protection
D
Over Current Limitation
D
5-Pin SOT-23 (DBV) Package
APPLICATIONS
D
D
D
D
D
D
D
D
D
Portable Communication Devices
Battery Powered Equipment
PCMCIA Cards
Personal Digital Assistants
Modems
Bar Code Scanners
Backup Power Supplies
SMPS Post Regulation
Internet Audio
DESCRIPTION
The TPS721xx family of LDO regulators is available in
fixed voltage options that are commonly used to power
the latest DSP鈥檚 and microcontrollers with an adjustable
option ranging from 1.22 V to 2.5 V. These regulators
can be used in a wide variety of applications ranging
from portable, battery-powered equipment to PC
peripherals. The family features operation over a wide
range of input voltages (1.8 V to 5.5 V) and low dropout
1.8 V
TPS72115
IN
EN
OUT
GND
1.5 V
0.1
碌F
0.1
碌F
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments
semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date. Products
conform to specifications per the terms of Texas Instruments standard warranty.
Production processing does not necessarily include testing of all parameters.
Copyright
铮?/div>
2002, Texas Instruments Incorporated
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