1FEATURES

• 1-A Low-Dropout Regulator Supports Input

Voltages Down to 1.8-V

• Available in 1.26-V, 1.5-V, 1.6-V, 1.8-V, 2.5-V

• Stable With Any Type/Value Output Capacitor

• ±2% Output Voltage Tolerance Over Line,

Load, and Temperature (–40°C to +125°C)

• Integrated Supervisor (SVS) With 200-ms

RESET Delay Time

• Low 170-mV Dropout Voltage at 1 A

(TPS72625)

• Low 210-mA Ground Current at Full Load

• Less than 1-mA Standby Current

• Integrated UVLO with Thermal and

Overcurrent Protection

• 5-Lead SOT223 or DDPAK Surface-Mount

Package

APPLICATIONS

• PCI Cards

• Modem Banks and Telecom Boards

• DSP, FPGA, and Microprocessor Power

Supplies

• Portable, Battery-Powered Applications

• 1.26-V Core Voltage for the Following DSPs:

– TMS320vC5501

– TMS320vC5502

DESCRIPTION

The TPS726xx 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. 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 operate over a wide range of input

voltages (1.8 V to 6 V) and have 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.

Unlike some regulators that have a minimum current

requirement, the TPS726xx family is stable with no

output load current. The low noise capability of this family, coupled with its high current operation and

ease of power dissipation, make it ideal for telecom

boards, modem banks, and other noise sensitive

applications.

The TPS726xx is available in either a SOT223 or

DDPAK package. The TPS726126 is available in a

SOT223 package only.