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TPS7A49

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

Data sheet
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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
* Datasheet TPS7A49 36-V, 150-mA, Ultralow-Noise, Positive Linear Regulator datasheet (Rev. E) May 26, 2015
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 articles LDO basics: capacitor vs. capacitance Aug. 01, 2018
Technical articles LDO Basics: Preventing reverse current Jul. 25, 2018
Selection guide Power Management Guide 2018 (Rev. R) Jun. 25, 2018
Technical articles LDO basics: introduction to quiescent current Jun. 20, 2018
Selection guide Low Dropout Regulators Quick Reference Guide (Rev. P) Mar. 21, 2018
Technical articles LDO basics: noise – part 1 Jun. 14, 2017
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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  • Ongoing reliability monitoring

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