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Product details

Parameters

Output options Adjustable Output, Fixed Output Iout (Max) (A) 0.1 Vin (Max) (V) 5.5 Vin (Min) (V) 2.7 Vout (Max) (V) 5.2 Vout (Min) (V) 1.2 Fixed output options (V) 1.8, 3.3, 4.7 Noise (uVrms) 15 Iq (Typ) (mA) 0.17 Thermal resistance θJA (°C/W) 178 Load capacitance (Min) (µF) 1 Rating Catalog Regulated outputs (#) 1 Features Enable Accuracy (%) 2 PSRR @ 100 KHz (dB) 45 Dropout voltage (Vdo) (Typ) (mV) 38 Operating temperature range (C) -40 to 125 open-in-new Find other Linear regulators (LDO)

Package | Pins | Size

SOT-23 (DBV) 5 5 mm² 2.9 x 1.6 SOT-23 (DBV) 6 5 mm² 2.9 x 1.6 open-in-new Find other Linear regulators (LDO)

Features

  • 100-mA Low-Dropout Regulator With EN
  • Available in 1.8-V, 3.3-V, 4.7-V, and Adj.
  • High PSRR (70 dB at 10 kHz)
  • Ultralow Noise (15 µVRMS)
  • Fast Start-Up Time (63 µs)
  • Stable With Any 1-µF Ceramic Capacitor
  • Excellent Load, Line Transient
  • Very Low Dropout Voltage (38 mV at Full Load, TPS79147)
  • 5-Pin SOT23 (DBV) Package
  • TPS792xx Provides EN Options

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Description

The TPS791 device is a low-dropout (LDO) low-power linear voltage regulator that features high power-supply rejection ratio (PSRR), ultralow noise, fast start-up, and excellent line and load transient responses in a small outline, SOT23 package. The device is stable, with a small 1-µF ceramic capacitor on the output. The TPS791 uses an advanced, proprietary BiCMOS fabrication process to yield extremely low dropout voltages (for example, 38 mV at 100 mA, TPS79147). This device achieves fast start-up times (approximately 63 µs with a 0.001-µF bypass capacitor) while consuming very low quiescent current (170 µA typical). Moreover, when the device is placed in standby mode, the supply current is reduced to less than 1 µA. The TPS79118 exhibits approximately 15 µVRMS of output voltage noise with a 0.1-µF bypass capacitor. Applications with analog components that are noise sensitive, such as portable RF electronics, benefit from the high PSRR and low noise features as well as the fast response time.






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Same functionality but is not pin-for-pin or parametrically equivalent to the compared device:
TPS7A90 ACTIVE 500-mA, low-noise, high-PSRR, adjustable ultra-low-dropout voltage regulator with high-accuracy Much lower noise, improved PSRR>30kHz, much better thermal dissipation, higher current, wider VIN range

Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 5
Type Title Date
* Datasheet TPS791 Ultralow Noise, High PSRR, Fast RF 100-mA Low-Dropout Linear Regulators datasheet (Rev. D) Feb. 01, 2018
Technical articles LDO basics: capacitor vs. capacitance Aug. 01, 2018
Technical articles LDO Basics: Preventing reverse current Jul. 25, 2018
Technical articles LDO basics: introduction to quiescent current Jun. 20, 2018
Technical articles LDO basics: noise – part 1 Jun. 14, 2017

Design & development

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

Hardware development

EVALUATION BOARD Download
5
EVALUATION BOARD Download
49
Description

The TPS76901EVM-127 evaluation module (EVM) provides designers with an easy layout for using and evaluating the TPS76901 SOT-23 LDO in an application to regulate from 5 V to a selectable output. The EVM includes input and output capacitors.

Features

Same size and TO-220 package. Simplifies designing of the power supply for the core power of low-power TMS320C54x digital signal processors (DSPs).

EVALUATION BOARD Download
49
Description

The TPS76918EVM-127 give designer an easy layout for using and evaluating TPS76918 SOT23 LDO in an application to regulate from 5V to a 1.8V output. It includes input and output capacitors.

Features

Same size and TO220 package. Simplifies designing the core power power supply for low power TMS320C54x DSPs.

EVALUATION BOARD Download
49
Description

The TPS76933EVM-127 evaluation module (EVM) provides designers with an easy layout for using and evaluating the TPS76933 SOT-23 LDO in an application to regulate from 5 V to a 3.3-V output. The EVM includes input and output capacitors.

Features

Same size and TO-220 package. Simplifies designing the power supply for the core power of low-power TMS320C54x digital signal processors (DSPs).

EVALUATION BOARD Download
49
EVALUATION BOARD Download
49
Description

The purpose of this EVM is to facilitate evaluation of the TPS793xx family of LDO regulators. Each EVM package contains one SLVP191 test board, with either a TPS79301DBV linear regulator or a TPS79328DBV linear regulator, as well as supporting passive components. The TPS79301DBV adjustable device (...)

Reference designs

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Low Power, Low Noise 24b Analog Front-End Reference Design for DAQ and Wireless Sensor IoT Systems
TIDA-01013 — The need for lower power, lower noise analog front-ends (AFE) is becoming increasingly important in many applications today, such as data acquisition systems (DAQs), field instrumentation, Internet-of-Things (IoT), and automatic test equipment. In many cases, this need is highlighted by the advent (...)
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REFERENCE DESIGNS Download
Isolated, High-Accuracy Analog Input Module Reference Design Using 16-Bit ADC and Digital Isolator
TIDA-01214 — This reference design provides accurate measurements of AC voltage and current inputs using a precision 16-bit SAR ADC over a wide input range, covering protection and measurement range (including sampling requirements of IEC 61850-9-2), simplifying system design and improving trip time performance (...)
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CAD/CAE symbols

Package Pins Download
SOT-23 (DBV) 6 View options
SOT-23 (DBV) 5 View options

Ordering & quality

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