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

TPS71025

AKTIV

Low-Dropout-Spannungsregler, 500 mA, 10 V, hoher PSRR-Wert, mit Aktivierung

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open-in-new Alternativen vergleichen
Gleiche Funktionalität, andere Pinbelegung als verglichener Baustein
TLV767 AKTIV Linearer (LDO) Spannungsregler, 1 V, 16 A mit einstellbarer und fester Ausgangsspannung 1-A, alternative product offering lower-IQ, better noise/PSRR performance and improved accuracy.
TPS7A26 AKTIV Hochpräziser, einstellbarer Low-Dropout-Spannungsregler mit 500 mA, 18 V, extrem niedrigem IQ, Power Alternative product offering ultra-low-IQ and improved accuracy in a 2-mm x 2-mm WSON package.

TPS71025

AKTIV
Datenblatt Jetzt bestellen

Produktdetails

Output options Fixed Output Iout (max) (A) 0.5 Vin (max) (V) 10 Vin (min) (V) 3.5 Vout (max) (V) 2.5 Vout (min) (V) 2.5 Fixed output options (V) 2.5 Noise (µVrms) 228 Iq (typ) (mA) 0.28 Thermal resistance θJA (°C/W) 106 Rating Catalog Load capacitance (min) (µF) 10 Regulated outputs (#) 1 Features Enable Accuracy (%) 2 Dropout voltage (Vdo) (typ) (mV) 330 Operating temperature range (°C) 0 to 125
Output options Fixed Output Iout (max) (A) 0.5 Vin (max) (V) 10 Vin (min) (V) 3.5 Vout (max) (V) 2.5 Vout (min) (V) 2.5 Fixed output options (V) 2.5 Noise (µVrms) 228 Iq (typ) (mA) 0.28 Thermal resistance θJA (°C/W) 106 Rating Catalog Load capacitance (min) (µF) 10 Regulated outputs (#) 1 Features Enable Accuracy (%) 2 Dropout voltage (Vdo) (typ) (mV) 330 Operating temperature range (°C) 0 to 125
PDIP (P) 8 92.5083 mm² 9.81 x 9.43 SOIC (D) 8 29.4 mm² 4.9 x 6
  • 2.5-V Fixed-Output Regulator
  • V ery Low-Dropout (LDO) Voltage...57 mV Typical at IO = 100 mA
  • Very Low Quiescent Current, Independent of Load...292 uA Typ
  • Extremely Low Sleep-State Current,
    0.5 uA Max
  • 2% Tolerance Over Specified Conditions
  • Output Current Range...0 mA to 500 mA
  • Available in Space Saving 8-Pin SOIC and 20-Pin TSSOP Packages
  • 0°C to 125°C Operating Junction Temperature Range
  • 2.5-V Fixed-Output Regulator
  • V ery Low-Dropout (LDO) Voltage...57 mV Typical at IO = 100 mA
  • Very Low Quiescent Current, Independent of Load...292 uA Typ
  • Extremely Low Sleep-State Current,
    0.5 uA Max
  • 2% Tolerance Over Specified Conditions
  • Output Current Range...0 mA to 500 mA
  • Available in Space Saving 8-Pin SOIC and 20-Pin TSSOP Packages
  • 0°C to 125°C Operating Junction Temperature Range

The TPS71025 low-dropout regulator offers an order of magnitude reduction in both dropout voltage and quiescent current over conventional LDO performance. The improvement results from replacing the typical pnp pass transistor with a PMOS device.

Because the PMOS device behaves as a low-value resistor, the dropout voltage is very low (maximum of 95mV at an output current of 100 mA) and is directly proportional to the output current (see Figure 1). Additionally, since the PMOS pass element is a voltage-driven device, the quiescent current is very low and remains independent of output loading (typically 292 uA over the full range of output current, 0 mA to 500mA). These two key specifications yield a significant improvement in operating life for battery-powered systems. The TPS71025 also features a sleep mode; applying a TTL high signal to EN\ (enable\) shuts down the regulator, reducing the quiescent current to 0.5 uA maximum at TJ = 25°C.

The D package is availabe taped and reeled. Add R suffix to device type (e.g., TPS71025DR). The PW package is only available left-end taped and reeled and is indicated by the LE suffix on the device type.


Figure 1. Dropout Voltage Versus Output Current

The TPS71025 low-dropout regulator offers an order of magnitude reduction in both dropout voltage and quiescent current over conventional LDO performance. The improvement results from replacing the typical pnp pass transistor with a PMOS device.

Because the PMOS device behaves as a low-value resistor, the dropout voltage is very low (maximum of 95mV at an output current of 100 mA) and is directly proportional to the output current (see Figure 1). Additionally, since the PMOS pass element is a voltage-driven device, the quiescent current is very low and remains independent of output loading (typically 292 uA over the full range of output current, 0 mA to 500mA). These two key specifications yield a significant improvement in operating life for battery-powered systems. The TPS71025 also features a sleep mode; applying a TTL high signal to EN\ (enable\) shuts down the regulator, reducing the quiescent current to 0.5 uA maximum at TJ = 25°C.

The D package is availabe taped and reeled. Add R suffix to device type (e.g., TPS71025DR). The PW package is only available left-end taped and reeled and is indicated by the LE suffix on the device type.


Figure 1. Dropout Voltage Versus Output Current
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Technische Dokumentation

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Typ Titel Datum
* Data sheet TPS71025 - Low-Dropout Voltage Regulator datasheet (Rev. A) 12 Mai 1998
Application note LDO Noise Demystified (Rev. B) PDF | HTML 18 Aug 2020
Application note Fundamental Theory of PMOS LDO Voltage Regulators (Rev. A) 17 Aug 2018
Application note LDO PSRR Measurement Simplified (Rev. A) PDF | HTML 09 Aug 2017
Application note Technical Review of Low Dropout Voltage Regulator Operation And Performance 30 Aug 1999

Design und Entwicklung

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