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TPS72501

TPS72515, TPS72516

TPS72518, TPS72525

SLVS341D – MAY 2002 – REVISED MARCH 2004

LOW INPUT VOLTAGE, 1-A LOW-DROPOUT LINEAR REGULATORS WITH SUPERVISOR

FEATURES

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1-A Output Current

Available in 1.5-V, 1.6-V, 1.8-V, 2.5-V

Fixed-Output and Adjustable Versions

(1.2-V to 5.5-V)

Input Voltage Down to 1.8 V

Low 170-mV Dropout Voltage at 1 A

(TPS72525)

Stable With Any Type/Value Output Capacitor

Integrated Supervisor (SVS) With 50-ms

RESET Delay Time

Low 210-µA Ground Current at Full Load

(TPS72525)

Less than 1-µA Standby Current

±2%

Output Voltage Tolerance Over Line,

Load, and Temperature (-40°C to 125°C)

Integrated UVLO

Thermal and Overcurrent Protection

5-Lead SOT223-5 or DDPAK and 8-Pin SOP

(TPS72501 only) Surface Mount Package

DESCRIPTION

The TPS725xx family of 1-A low-dropout (LDO) linear

regulators has fixed voltage options available that are

commonly used to power the latest DSPs, FPGAs,

and microcontrollers. An adjustable option ranging

from 1.22 V to 5.5 V is also available. The integrated

supervisory circuitry provides an active low RESET

signal when the output falls out of regulation. The no

capacitor/any capacitor feature allows the customer

to tailor output transient performance as needed.

Therefore, compared to other regulators capable of

providing the same output current, this family of

regulators can provide a stand-alone power supply

solution or a post regulator for a switch mode power

supply.

These regulators are ideal for higher current appli-

cations. The family operates over a wide range of

input voltages (1.8 V to 6 V) and has very low

dropout (170 mV at 1-A).

Ground current is typically 210 µA at full load and

drops to less than 80 µA at no load. Standby current

is less than 1 µA.

Each regulator option is available in either a

SOT223-5, D (TPS72501 only), or DDPAK package.

With a low input voltage and properly heatsinked

package, the regulator dissipates more power and

achieves higher efficiencies than similar regulators

requiring 2.5 V or more minimum input voltage and

higher quiescent currents. These features make it a

viable power supply solution for portable, bat-

tery-powered equipment.

D PACKAGE

(TOP VIEW)

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APPLICATIONS

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PCI Cards

Modem Banks

Telecom Boards

DSP, FPGA, and Microprocessor Power

Supplies

Portable, Battery-Powered Applications

DCQ PACKAGE

SOT223-5

(TOP VIEW)

ENABLE

IN

GND

OUT

RESET/FB

1

2

3

4

5

1 2 3 4 5

KTT PACKAGE

DDPAK

(TOP VIEW)

OUT

FB

GND

NC

1

2

3

4

8

7

6

5

IN

GND

GND

ENABLE

ENABLE

IN

GND

OUT

RESET/FB

NC − No internal connection

NOTE: TPS72501 replaces RESET with FB. Tab is GND for the DCK and KTT packages.

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 the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

Copyright © 2002–2004, Texas Instruments Incorporated