TPS72201, TPS72215

TPS72216, TPS72218

SLVS390B – DECEMBER 2001 – REVISED MAY 2002

LOW INPUT VOLTAGE, CAP FREE 50-mA

LOW-DROPOUT LINEAR REGULATORS

(3,00 mm x 3,00 mm)

Actual Size

FEATURES

Fixed-Output and Adjustable Versions

(Down to 1.8 V)

Shutdown Mode

APPLICATIONS

DESCRIPTION

The TPS722xx family of LDO regulators is available in

fixed voltage options that are commonly used to power

the latest DSP’s 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

voltage (50 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

µA during normal operation and 1 µA in

shutdown mode. Thus, 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-

µF 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-

µF. 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.

3

2

4

5

DBV PACKAGE

(TOP VIEW)

1

IN

GND

EN

OUT

NC/FB

TPS72215

0.1

µF

0.1

µF

1.8 V

1.5 V

GND

OUT

IN

EN

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.

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.

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Copyright

 2002, Texas Instruments Incorporated