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Linear & low-dropout (LDO) regulators

TPS7A49

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150-mA, 36-V, low-noise, high-PSRR, adjustable low-dropout voltage regulator with enable

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TPS7A88 ACTIVE 1-A, low-noise, high-PSRR, dual-channel adjustable ultra-low-dropout voltage regulator A dual-channel, low noise, 1-A LDO.
TPS7A91 ACTIVE 1-A, low-noise, high-PSRR, adjustable ultra-low-dropout voltage regulator with high-accuracy A single-channel, low-noise, 1-A LDO.

TPS7A49

ACTIVE
Data sheet Order now

Product details

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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Technical documentation

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Type Title Date
* Data sheet TPS7A49 36-V, 150-mA, Ultralow-Noise, Positive Linear Regulator datasheet (Rev. E) PDF | HTML 26 May 2015
White paper Parallel LDO Architecture Design Using Ballast Resistors PDF | HTML 14 Dec 2022
White paper Comprehensive Analysis and Universal Equations for Parallel LDO's Using Ballast PDF | HTML 13 Dec 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 Mar 2018
Technical article Designing output isolated 4-wire sensor transmitters 28 Aug 2015
Technical article Input Isolation for 3-wire Analog Outputs 15 Jun 2015
Technical article Knock out the noise! Create a cleaner PLC design 26 Feb 2015
Technical article Powering Bipolar Rails with Wide-VIN Fly-Buck Converter 09 Dec 2014
EVM User's guide TPS7A30-49EVM-567 User's Guide 27 Aug 2010

Design & development

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

Evaluation board

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User guide: PDF
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Evaluation board

TPS7A30-49EVM-567 — TPS7A3001 and TPS7A4901 low-dropout (LDO) linear regulator evaluation module

The TPS7A30-49EVM-567 is a fully assembled and tested circuit for evaluating the TPS7A3001 and TPS7A4901 low-dropout linear regulators in the DGN (3mm x 5mm MSOP-8) package. The TPS7A30-49EVM-567 includes two independent circuits with outputs of –15 V and +15 V (respectively). These (...)
User guide: PDF
Not available on TI.com
Development kit

PMLKLDOEVM — TI-PMLK LDO experiment board using TPS7A4901 and TPS7A8300

Our TI-PMLK LDO experiment board is part of the TI Power Management Lab Kit (TI-PMLK) series. TI-PMLK series provides hands on learning to reinforce power supply knowledge. The modular format lets you customize the TI-PMLK series experience in a way that makes the most impact (...)

User guide: PDF
Not available on TI.com
Simulation model

TPS7A4901 PSpice Transient Model (Rev. B)

SBVM024B.ZIP (47 KB) - PSpice Model
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Simulation model

TPS7A4901 PSpice Transient Model (Rev. C)

SBVM024C.ZIP (47 KB) - PSpice Model
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Simulation model

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

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

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

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

TPS7A4901 Unencrypted PSpice Transient Model (Rev. A)

SBVM528A.ZIP (2 KB) - PSpice Model
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HVSSOP (DGN) 8 View options
VSON (DRB) 8 View options
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