TPS725

ACTIVE

1-A, ultra-low-dropout voltage regulator with enable & RESET

Product details

Output options Adjustable Output, Fixed Output Iout (max) (A) 1 Vin (max) (V) 6 Vin (min) (V) 1.8 Vout (max) (V) 5.5 Vout (min) (V) 1.22 Fixed output options (V) 1.5, 1.6, 1.8, 2.5 Rating Catalog Noise (µVrms) 150 PSRR at 100 KHz (dB) 20 Iq (typ) (mA) 0.075 Thermal resistance θJA (°C/W) 23, 55.5 Load capacitance (min) (µF) 10 Regulated outputs (#) 1 Features Enable, Power good Accuracy (%) 2 Dropout voltage (Vdo) (typ) (mV) 170 Operating temperature range (°C) -40 to 125
Output options Adjustable Output, Fixed Output Iout (max) (A) 1 Vin (max) (V) 6 Vin (min) (V) 1.8 Vout (max) (V) 5.5 Vout (min) (V) 1.22 Fixed output options (V) 1.5, 1.6, 1.8, 2.5 Rating Catalog Noise (µVrms) 150 PSRR at 100 KHz (dB) 20 Iq (typ) (mA) 0.075 Thermal resistance θJA (°C/W) 23, 55.5 Load capacitance (min) (µF) 10 Regulated outputs (#) 1 Features Enable, Power good Accuracy (%) 2 Dropout voltage (Vdo) (typ) (mV) 170 Operating temperature range (°C) -40 to 125
SOT-223 (DCQ) 6 45.89 mm² 6.5 x 7.06 TO-263 (KTT) 5 154.8384 mm² 10.16 x 15.24
  • 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
  • APPLICATIONS
    • PCI Cards
    • Modem Banks
    • Telecom Boards
    • DSP, FPGA, and Microprocessor Power Supplies
    • Portable, Battery-Powered Applications

  • 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
  • APPLICATIONS
    • PCI Cards
    • Modem Banks
    • Telecom Boards
    • DSP, FPGA, and Microprocessor Power Supplies
    • Portable, Battery-Powered Applications

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 applications. 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, battery-powered equipment.

Although an output capacitor is not required for stability, transient response and output noise are improved with a 10-µF output capacitor.

Unlike some regulators that have a minimum current requirement, the TPS725 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 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 applications. 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, battery-powered equipment.

Although an output capacitor is not required for stability, transient response and output noise are improved with a 10-µF output capacitor.

Unlike some regulators that have a minimum current requirement, the TPS725 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.

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Technical documentation

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* Data sheet TPS725xx: Low Input Voltage, 1-A Low-Dropout Linear Regulators with Supervisor datasheet (Rev. E) 18 Jun 2010
Application note LDO Noise Demystified (Rev. B) PDF | HTML 18 Aug 2020
Application note LDO PSRR Measurement Simplified (Rev. A) PDF | HTML 09 Aug 2017
User guide DEM-SOT223LDO Demonstration Fixture 15 Oct 2003
User guide DEM-TO263LDO Demonstration Fixture 15 Oct 2003

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

DEM-SOT223LDO — DEM-SOT223LDO Compatible with Most Positive Output LDOs in SOT223 (DCQ) Package

The Texas Instruments DEM-SOT223LDO demonstration module (DEM) helps designers evaluate the operation and performance of Texas Instruments low-dropout regulators (LDOs).  This module is compatible with most positive output LDOs offered in the SOT223 (DCQ) package.

User guide: PDF
Not available on TI.com
Reference designs

PMP2187 — Flyback Linear Regulator for Medical Pack (5.75V at 10mA) Reference Design

This design provides isolated 5V (x2), 3.3V, 2.5V and -5V outputs. All outputs are noise filtered using Low Drop Out (LDO) linear regulators for noise sensitive applications such as medical imaging and data acquisition.
Test report: PDF
Schematic: PDF
Package Pins CAD symbols, footprints & 3D models
SOT-223 (DCQ) 6 Ultra Librarian
TO-263 (KTT) 5 Ultra Librarian

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