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

TPS71

AKTIV

Low-Dropout-Spannungsregler, 500 mA, 10 V mit Aktivierung und RÜCKSETZUNG mit Verzögerung

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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.

TPS71

AKTIV
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Produktdetails

Output options Adjustable Output, Fixed Output Iout (max) (A) 0.5 Vin (max) (V) 10 Vin (min) (V) 2.5 Vout (max) (V) 9.75 Vout (min) (V) 1.2 Fixed output options (V) 1.05, 2.85, 3.3, 4.8, 5 Rating Catalog Noise (µVrms) 89 PSRR at 100 KHz (dB) 3 Iq (typ) (mA) 0.28 Thermal resistance θJA (°C/W) 106, 172, 178 Load capacitance (min) (µF) 10 Regulated outputs (#) 1 Features Enable, Power good Accuracy (%) 3 Dropout voltage (Vdo) (typ) (mV) 235 Operating temperature range (°C) -40 to 125
Output options Adjustable Output, Fixed Output Iout (max) (A) 0.5 Vin (max) (V) 10 Vin (min) (V) 2.5 Vout (max) (V) 9.75 Vout (min) (V) 1.2 Fixed output options (V) 1.05, 2.85, 3.3, 4.8, 5 Rating Catalog Noise (µVrms) 89 PSRR at 100 KHz (dB) 3 Iq (typ) (mA) 0.28 Thermal resistance θJA (°C/W) 106, 172, 178 Load capacitance (min) (µF) 10 Regulated outputs (#) 1 Features Enable, Power good Accuracy (%) 3 Dropout voltage (Vdo) (typ) (mV) 235 Operating temperature range (°C) -40 to 125
PDIP (P) 8 92.5083 mm² 9.81 x 9.43 SOIC (D) 8 29.4 mm² 4.9 x 6 TSSOP (PW) 20 41.6 mm² 6.5 x 6.4
  • Available in 5-V, 4.85-V, and 3.3-V Fixed-Output and Adjustable Versions
  • Very Low-Dropout Voltage ...Maximum of 32 mV at IO = 100 mA (TPS7150)
  • Very Low Quiescent Current – Independent of Load . . . 285 µA Typ
  • Extremely Low Sleep-State Current
       0.5 µA Max
  • 2% Tolerance Over Specified Conditions For Fixed-Output Versions
  • Output Current Range of 0 mA to 500 mA
  • TSSOP Package Option Offers Reduced Component Height for Space-Critical Applications
  • Power-Good (PG) Status Output
  • Available in 5-V, 4.85-V, and 3.3-V Fixed-Output and Adjustable Versions
  • Very Low-Dropout Voltage ...Maximum of 32 mV at IO = 100 mA (TPS7150)
  • Very Low Quiescent Current – Independent of Load . . . 285 µA Typ
  • Extremely Low Sleep-State Current
       0.5 µA Max
  • 2% Tolerance Over Specified Conditions For Fixed-Output Versions
  • Output Current Range of 0 mA to 500 mA
  • TSSOP Package Option Offers Reduced Component Height for Space-Critical Applications
  • Power-Good (PG) Status Output

The TPS71xx integrated circuits are a family of micropower low-dropout (LDO) voltage regulators. An order of magnitude reduction in dropout voltage and quiescent current over conventional LDO performance is achieved by 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 32 mV at an output current of 100 mA for the TPS7150) 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 285 µA over the full range of output current, 0 mA to 500 mA). These two key specifications yield a significant improvement in operating life for battery-powered systems. The LDO family also features a sleep mode; applying a TTL high signal to EN (enable) shuts down the regulator, reducing the quiescent current to 0.5 µA maximum at TJ = 25°C.

Voltage – Power good (PG) reports low output voltage and can be used to implement a power-on reset or a low-battery indicator.

The TPS71xx is offered in 3.3-V, 4.85-V, and 5-V fixed-voltage versions and in an adjustable version (programmable over the range of 1.2 V to 9.75 V). Output voltage tolerance is specified as a maximum of 2% over line, load, and temperature ranges (3% for adjustable version). The TPS71xx family is available in PDIP (8 pin), SO (8 pin), and TSSOP (20-pin) packages. The TSSOP has a maximum height of 1,2 mm.

The TPS71xx integrated circuits are a family of micropower low-dropout (LDO) voltage regulators. An order of magnitude reduction in dropout voltage and quiescent current over conventional LDO performance is achieved by 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 32 mV at an output current of 100 mA for the TPS7150) 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 285 µA over the full range of output current, 0 mA to 500 mA). These two key specifications yield a significant improvement in operating life for battery-powered systems. The LDO family also features a sleep mode; applying a TTL high signal to EN (enable) shuts down the regulator, reducing the quiescent current to 0.5 µA maximum at TJ = 25°C.

Voltage – Power good (PG) reports low output voltage and can be used to implement a power-on reset or a low-battery indicator.

The TPS71xx is offered in 3.3-V, 4.85-V, and 5-V fixed-voltage versions and in an adjustable version (programmable over the range of 1.2 V to 9.75 V). Output voltage tolerance is specified as a maximum of 2% over line, load, and temperature ranges (3% for adjustable version). The TPS71xx family is available in PDIP (8 pin), SO (8 pin), and TSSOP (20-pin) packages. The TSSOP has a maximum height of 1,2 mm.
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Technische Dokumentation

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Typ Titel Datum
* Data sheet Low-Dropout Voltage Regulators datasheet (Rev. G) 22 Jan 2003
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 Power Supply Sequencing Solutions for Dual Supply Voltage DSPs (Rev. A) 05 Jul 2000
Application note Technical Review of Low Dropout Voltage Regulator Operation And Performance 30 Aug 1999
Application note TMS320C62x/67x Power Supply Solutions for 1-2 DSPs Using the TL5001A and TPS7133 (Rev. A) 01 Jun 1999

Design und Entwicklung

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Berechnungstool

TPS7X01CALC — TPS7x01 LDO Design Calculator

This spreadsheet calculates the operating parameters for the Texas Instruments TPS7x01 family of adjustable low dropout regulators.

The closest 1% resistor values are calculated, as well as, the maximum power dissipation, worst-case output voltages, Power-Good trip voltages, and maximum (...)

Unterstützte Produkte und Hardware

Unterstützte Produkte und Hardware

Produkte
Linear- und Low-Dropout-Regler (LDO)
TPS71 — Low-Dropout-Spannungsregler, 500 mA, 10 V mit Aktivierung und RÜCKSETZUNG mit Verzögerung TPS72 — Low-Dropout-Spannungsregler, 250 mA, 10 V, mit Power-Good- und Aktivierungsfunktion TPS73 — Low-Dropout-Spannungsregler, 500 mA, 10 V, mit Power-Good- und Aktivierungsfunktion TPS730 — Low-Dropout-Spannungsregler mit 200 mA und Aktivierung
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Gehäuse Pins CAD-Symbole, Footprints und 3D-Modelle
PDIP (P) 8 Ultra Librarian
SOIC (D) 8 Ultra Librarian
TSSOP (PW) 20 Ultra Librarian
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