Startseite Energiemanagement Linear- und Low-Dropout-Regler (LDO)

TPS7A25

AKTIV

Hochpräziser, einstellbarer Low-Dropout-Spannungsregler mit 300 mA, 18 V, extrem niedrigem IQ, Power

Produktdetails

Output options Adjustable Output, Fixed Output Iout (max) (A) 0.3 Vin (max) (V) 18 Vin (min) (V) 2.4 Vout (max) (V) 17.64 Vout (min) (V) 1.24 Fixed output options (V) 1.25, 1.8, 2.5, 3.3, 5 Noise (µVrms) 300 Iq (typ) (mA) 0.002 Thermal resistance θJA (°C/W) 73.3 Rating Catalog Load capacitance (min) (µF) 1 Regulated outputs (#) 1 Features Enable, Power good, Soft start Accuracy (%) 1 PSRR at 100 KHz (dB) 22 Dropout voltage (Vdo) (typ) (mV) 210 Operating temperature range (°C) -40 to 125
Output options Adjustable Output, Fixed Output Iout (max) (A) 0.3 Vin (max) (V) 18 Vin (min) (V) 2.4 Vout (max) (V) 17.64 Vout (min) (V) 1.24 Fixed output options (V) 1.25, 1.8, 2.5, 3.3, 5 Noise (µVrms) 300 Iq (typ) (mA) 0.002 Thermal resistance θJA (°C/W) 73.3 Rating Catalog Load capacitance (min) (µF) 1 Regulated outputs (#) 1 Features Enable, Power good, Soft start Accuracy (%) 1 PSRR at 100 KHz (dB) 22 Dropout voltage (Vdo) (typ) (mV) 210 Operating temperature range (°C) -40 to 125
WSON (DRV) 6 4 mm² 2 x 2
  • Ultra-low IQ: 2 µA
  • Input voltage: 2.4 V to 18 V
  • Output voltage options available:
    • Fixed: 1.25 V to 5.0 V
    • Adjustable: 1.24 V to 17.66 V
  • 1% accuracy over temperature
  • Low dropout: 340 mV (max) at 300 mA
  • Open-drain, power-good output
  • Thermal shutdown and overcurrent protection
  • Active overshoot pulldown
  • Operating junction temperature: –40°C to +125°C
  • Stable with 1-µF output capacitors
  • Package: 6-pin WSON
  • Ultra-low IQ: 2 µA
  • Input voltage: 2.4 V to 18 V
  • Output voltage options available:
    • Fixed: 1.25 V to 5.0 V
    • Adjustable: 1.24 V to 17.66 V
  • 1% accuracy over temperature
  • Low dropout: 340 mV (max) at 300 mA
  • Open-drain, power-good output
  • Thermal shutdown and overcurrent protection
  • Active overshoot pulldown
  • Operating junction temperature: –40°C to +125°C
  • Stable with 1-µF output capacitors
  • Package: 6-pin WSON

The TPS7A25 low-dropout (LDO) linear voltage regulator introduces a combination of a 2.4-V to 18-V input voltage range with very-low quiescent current (IQ). These features help modern appliances meet increasingly stringent energy requirements, and help extend battery life in portable-power solutions.

The TPS7A25 is available in both fixed and adjustable versions. For more flexibility or higher output voltages, the adjustable version uses feedback resistors to set the output voltage from 1.24 V to 17.64 V. Both versions have a 1% output regulation accuracy that provides precision regulation for most microcontroller (MCU) references.

The TPS7A25 LDO operates more efficiently than standard linear regulators because the maximum dropout voltage is less than 340 mV at 300 mA of current. This maximum dropout voltage allows for 92.5% efficiency from a 5.4-V input voltage (VIN) to a 5.0-V output voltage (VOUT).

The power-good (PG) indicator can be used to either hold an MCU in reset until power is good, or for sequencing. The PG pin is an open-drain output; therefore, the pin is easily level-shifted for monitoring by a rail other than VOUT. The built-in current limit and thermal shutdown help protect the regulator in the event of a load short or fault.

For a higher output current alternative, consider the TPS7A26.

The TPS7A25 low-dropout (LDO) linear voltage regulator introduces a combination of a 2.4-V to 18-V input voltage range with very-low quiescent current (IQ). These features help modern appliances meet increasingly stringent energy requirements, and help extend battery life in portable-power solutions.

The TPS7A25 is available in both fixed and adjustable versions. For more flexibility or higher output voltages, the adjustable version uses feedback resistors to set the output voltage from 1.24 V to 17.64 V. Both versions have a 1% output regulation accuracy that provides precision regulation for most microcontroller (MCU) references.

The TPS7A25 LDO operates more efficiently than standard linear regulators because the maximum dropout voltage is less than 340 mV at 300 mA of current. This maximum dropout voltage allows for 92.5% efficiency from a 5.4-V input voltage (VIN) to a 5.0-V output voltage (VOUT).

The power-good (PG) indicator can be used to either hold an MCU in reset until power is good, or for sequencing. The PG pin is an open-drain output; therefore, the pin is easily level-shifted for monitoring by a rail other than VOUT. The built-in current limit and thermal shutdown help protect the regulator in the event of a load short or fault.

For a higher output current alternative, consider the TPS7A26.

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Technische Dokumentation

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Typ Titel Datum
* Data sheet TPS7A25 300-mA, 18-V, Ultra-Low IQ, Low-Dropout Linear Voltage Regulator With Power-Good datasheet (Rev. C) PDF | HTML 02 Dez 2022
White paper Understanding the Foundations of Quiescent Current in Linear Power Systems 18 Feb 2021
EVM User's guide TPS7A26EVM-021 Evaluation Module User's Guide 07 Dez 2018

Design und Entwicklung

Weitere Bedingungen oder erforderliche Ressourcen enthält gegebenenfalls die Detailseite, die Sie durch Klicken auf einen der unten stehenden Titel erreichen.

Evaluierungsplatine

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Schaltplan: PDF
Gehäuse Pins CAD-Symbole, Footprints und 3D-Modelle
WSON (DRV) 6 Ultra Librarian

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