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TPS7A49

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

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

TPS7A49

ACTIVE
Data sheet Order now

Product details

Parameters

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 (uVrms) 15 Iq (Typ) (mA) 0.06 Thermal resistance θJA (°C/W) 48 Load capacitance (Min) (µF) 2.2 Rating Catalog Regulated outputs (#) 1 Features Enable, Soft Start Accuracy (%) 2.5 PSRR @ 100 KHz (dB) 54 Dropout voltage (Vdo) (Typ) (mV) 260 Operating temperature range (C) -40 to 125 open-in-new Find other Linear regulators (LDO)

Package | Pins | Size

HVSSOP (DGN) 8 9 mm² 3 x 3 VSON (DRB) 8 9 mm² 3 x 3 open-in-new Find other Linear regulators (LDO)

Features

  • 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
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Description

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) May 26, 2015
Technical article What’s not in the power MOSFET data sheet part 2: voltage-dependent leakage currents Jul. 23, 2021
Application note A Topical Index of TI LDO Application Notes (Rev. F) Jun. 27, 2019
Application note Accurate Thermal Calculations on the Back of a Napkin Jun. 03, 2019
Technical article LDO basics: capacitor vs. capacitance Aug. 01, 2018
Technical article LDO Basics: Preventing reverse current Jul. 25, 2018
Selection guide Power Management Guide 2018 (Rev. R) Jun. 25, 2018
Technical article LDO basics: introduction to quiescent current Jun. 20, 2018
Selection guide Low Dropout Regulators Quick Reference Guide (Rev. P) Mar. 21, 2018
Selection guide TI Components for Aerospace and Defense Guide (Rev. E) Mar. 22, 2017
User guide TPS7A30-49EVM-567 User's Guide Aug. 27, 2010

Design & development

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

Hardware development

EVALUATION BOARD Download
document-generic User guide
49
Description
The TI Analog, Active Crossover Audio Plug-in Module turns TI Audio Class-D amplifier EVM’s into a high quality, two-way speaker amplifier.  The plug-in module makes it easy to remove the large and expensive passive crossover found in passive loudspeakers and create a biamped, two-way (...)
Features
  • Compatible with TI Audio Plug-in Module Ecosystem
  • Complete design for two-way, active crossover speakers
  • Active crossover includes a high-pass filter, low-pass filter, baffle step and delay
  • Input: Mono RCA jack
  • Output: Analog, 2-channel, 2-Vrms differential
  • Connect to TI Class-D Audio EVMs (Check (...)
View details
EVALUATION BOARD Download
document-generic User guide
20
Description
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 (...)
Features
  • Wide input voltage range: TPS7A4901 (3 V to 36 V), TPS7A3001 (–3 V to –36 V)
  • 1.5% accuracy over line, load and temperature
  • Stable with a ceramic output capacitor greater than 2-µF
  • Low noise and high PSRR
  • Programmable soft start
View details
DEVELOPMENT KIT Download
document-generic User guide
49
Description

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 (...)

Features
  • Two different IC sections to expand the learning experience
  • Each section is configurable with jumpers for different exercises
  • The LDO board is accompanied by a downloadable LDO experiments book       
View details

Design tools & simulation

SIMULATION MODEL Download
SBVM024B.ZIP (47 KB) - PSpice Model
SIMULATION MODEL Download
SBVM024C.ZIP (47 KB) - PSpice Model
SIMULATION MODEL Download
SBVM216A.ZIP (12 KB) - TINA-TI Spice Model
SIMULATION MODEL Download
SBVM217A.TSC (105 KB) - TINA-TI Reference Design
SIMULATION MODEL Download
SBVM528A.ZIP (2 KB) - PSpice Model

Reference designs

Many TI reference designs include the TPS7A49 Use our reference design selection tool to review and identify designs that best match your application and parameters.
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CAD/CAE symbols

Package Pins Download
HVSSOP (DGN) 8 View options
SON (DRB) 8 View options

Ordering & quality

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