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

TPS7A49

AKTIV

Rauscharmer, einstellbarer Low-Dropout-Spannungsregler, 150 mA, 36 V, hoher PSRR mit Aktivierung

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TPS7A49

AKTIV
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Produktdetails

Output options Adjustable Output Iout (max) (A) 0.15 Vin (max) (V) 36 Vin (min) (V) 3 Vout (max) (V) 33 Vout (min) (V) 1.2 Noise (µVrms) 15 Iq (typ) (mA) 0.06 Thermal resistance θJA (°C/W) 48 Rating Catalog Load capacitance (min) (µF) 2.2 Regulated outputs (#) 1 Features Enable, Soft start Accuracy (%) 2.5 PSRR at 100 KHz (dB) 54 Dropout voltage (Vdo) (typ) (mV) 260 Operating temperature range (°C) -40 to 125
Output options Adjustable Output Iout (max) (A) 0.15 Vin (max) (V) 36 Vin (min) (V) 3 Vout (max) (V) 33 Vout (min) (V) 1.2 Noise (µVrms) 15 Iq (typ) (mA) 0.06 Thermal resistance θJA (°C/W) 48 Rating Catalog Load capacitance (min) (µF) 2.2 Regulated outputs (#) 1 Features Enable, Soft start Accuracy (%) 2.5 PSRR at 100 KHz (dB) 54 Dropout voltage (Vdo) (typ) (mV) 260 Operating temperature range (°C) -40 to 125
HVSSOP (DGN) 8 14.7 mm² 3 x 4.9 VSON (DRB) 8 9 mm² 3 x 3
  • Input Voltage Range: 3 V to 36 V
  • Noise:
    • 12.7 µVRMS (20 Hz to 20 kHz)
    • 15.4 µVRMS (10 Hz to 100 kHz)
  • Power-Supply Ripple Rejection:
    • 72 dB (120 Hz)
    • ≥ 52 dB (10 Hz to 400 kHz)
  • Adjustable Output: 1.194 V to 33 V
  • Output Current: 150 mA
  • Dropout Voltage: 260 mV at 100 mA
  • Stable with Ceramic Capacitors ≥ 2.2 µF
  • CMOS Logic-Level-Compatible Enable Pin
  • Fixed Current-Limit and Thermal Shutdown Protection
  • Packages: 8-Pin HVSSOP PowerPAD™ and
    3-mm × 3-mm VSON
  • Operating Temperature Range:
    –40°C to 125°C
  • Input Voltage Range: 3 V to 36 V
  • Noise:
    • 12.7 µVRMS (20 Hz to 20 kHz)
    • 15.4 µVRMS (10 Hz to 100 kHz)
  • Power-Supply Ripple Rejection:
    • 72 dB (120 Hz)
    • ≥ 52 dB (10 Hz to 400 kHz)
  • Adjustable Output: 1.194 V to 33 V
  • Output Current: 150 mA
  • Dropout Voltage: 260 mV at 100 mA
  • Stable with Ceramic Capacitors ≥ 2.2 µF
  • CMOS Logic-Level-Compatible Enable Pin
  • Fixed Current-Limit and Thermal Shutdown Protection
  • Packages: 8-Pin HVSSOP PowerPAD™ and
    3-mm × 3-mm VSON
  • Operating Temperature Range:
    –40°C to 125°C

The TPS7A49 series of devices are positive, high-voltage (36 V), ultralow-noise (15.4 µVRMS, 72-dB PSRR) linear regulators that can source a 150-mA load.

These linear regulators include a CMOS logic-level-compatible enable pin and capacitor-programmable soft-start function that allows for customized power-management schemes. Other available features include built-in current limit and thermal shutdown protection to safeguard the device and system during fault conditions.

The TPS7A49 family is designed using bipolar technology, and is ideal for high-accuracy, high-precision instrumentation applications where clean voltage rails are critical to maximize system performance. This design makes the device an excellent choice to power operational amplifiers, analog-to-digital converters (ADCs), digital-to-analog converters (DACs), and other high-performance analog circuitry.

In addition, the TPS7A49 family of linear regulators is suitable for post dc-dc converter regulation. By filtering out the output voltage ripple inherent to dc-dc switching conversion, maximum system performance is provided in sensitive instrumentation, test and measurement, audio, and RF applications.

For applications where positive and negative high-performance rails are required, consider TI’s TPS7A30xx family of negative high-voltage, ultralow-noise linear regulators as well.

The TPS7A49 series of devices are positive, high-voltage (36 V), ultralow-noise (15.4 µVRMS, 72-dB PSRR) linear regulators that can source a 150-mA load.

These linear regulators include a CMOS logic-level-compatible enable pin and capacitor-programmable soft-start function that allows for customized power-management schemes. Other available features include built-in current limit and thermal shutdown protection to safeguard the device and system during fault conditions.

The TPS7A49 family is designed using bipolar technology, and is ideal for high-accuracy, high-precision instrumentation applications where clean voltage rails are critical to maximize system performance. This design makes the device an excellent choice to power operational amplifiers, analog-to-digital converters (ADCs), digital-to-analog converters (DACs), and other high-performance analog circuitry.

In addition, the TPS7A49 family of linear regulators is suitable for post dc-dc converter regulation. By filtering out the output voltage ripple inherent to dc-dc switching conversion, maximum system performance is provided in sensitive instrumentation, test and measurement, audio, and RF applications.

For applications where positive and negative high-performance rails are required, consider TI’s TPS7A30xx family of negative high-voltage, ultralow-noise linear regulators as well.
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Technische Dokumentation

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Typ Titel Datum
* Data sheet TPS7A49 36-V, 150-mA, Ultralow-Noise, Positive Linear Regulator datasheet (Rev. E) PDF | HTML 26 Mai 2015
White paper Parallel LDO Architecture Design Using Ballast Resistors PDF | HTML 14 Dez 2022
White paper Comprehensive Analysis and Universal Equations for Parallel LDO's Using Ballast PDF | HTML 13 Dez 2022
Application note A Topical Index of TI LDO Application Notes (Rev. F) 27 Jun 2019
Application note Accurate Thermal Calculations on the Back of a Napkin 03 Jun 2019
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
Selection guide Low Dropout Regulators Quick Reference Guide (Rev. P) 21 Mär 2018
EVM User's guide TPS7A30-49EVM-567 User's Guide 27 Aug 2010

Design und Entwicklung

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Simulationsmodell

TPS7A4901 PSpice Transient Model (Rev. B)

SBVM024B.ZIP (47 KB) - PSpice Model
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TPS7A4901 PSpice Transient Model (Rev. C)

SBVM024C.ZIP (47 KB) - PSpice Model
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Simulationsmodell

TPS7A4901 TINA-TI Transient Reference Design (Rev. A)

SBVM217A.TSC (105 KB) - TINA-TI Reference Design
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Simulationsmodell

TPS7A4901 TINA-TI Transient Spice Model (Rev. A)

SBVM216A.ZIP (12 KB) - TINA-TI Spice Model
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Simulationsmodell

TPS7A4901 Unencrypted PSpice Transient Model (Rev. A)

SBVM528A.ZIP (2 KB) - PSpice Model
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