Top

Product details

Parameters

Output options Adjustable Output, Fixed Output Iout (Max) (A) 0.25 Vin (Max) (V) 5.5 Vin (Min) (V) 2.7 Vout (Max) (V) 5.4 Vout (Min) (V) 1.22 Fixed output options (V) 1.8, 2.5, 2.8, 3, 3.3 Noise (uVrms) 32 Iq (Typ) (mA) 0.17 Thermal resistance θJA (°C/W) 53 Load capacitance (Min) (µF) 2.2 Rating Catalog Regulated outputs (#) 1 Features Enable Accuracy (%) 3 PSRR @ 100 KHz (dB) 38 Dropout voltage (Vdo) (Typ) (mV) 155 Operating temperature range (C) -40 to 85 open-in-new Find other Linear regulators (LDO)

Package | Pins | Size

HVSSOP (DGN) 8 9 mm² 3 x 3 SOT-223 (DCQ) 6 46 mm² 6.5 x 7.06 open-in-new Find other Linear regulators (LDO)

Features

  • 250-mA Low-Dropout Regulator With Enable
  • Available in Fixed and Adjustable (1.2 V to
    5.5 V) Versions
  • High PSRR (60 dB at 10 kHz)
  • Ultralow Noise (32 µVrms, TPS79428)
  • Fast Start-Up Time (50 µs)
  • Stable With a 2.2-µF Ceramic Capacitor
  • Excellent Load/Line Transient Response
  • Very Low Dropout Voltage (155 mV at Full Load)
  • Available in MSOP-8 and SOT223-6 Packages
  • APPLICATIONS
    • RF: VCOs, Receivers, ADCs
    • Audio
    • Bluetooth™, Wireless LAN
    • Cellular and Cordless Telephones
    • Handheld Organizers, PDAs

PowerPAD is a trademark of Texas Instruments.
Bluetooth is a trademark of Bluetooth SIG, Inc.
All trademarks are the property of their respective owners.

open-in-new Find other Linear regulators (LDO)

Description

The TPS794xx family of low-dropout (LDO) linear voltage regulators features high power-supply rejection ratio (PSRR), ultralow-noise, fast start-up, and excellent line and load transient responses in small outline, MSOP-8 PowerPAD™ and SOT223-6 packages. Each device in the family is stable with a small 2.2-µF ceramic capacitor on the output. The family uses an advanced, proprietary BiCMOS fabrication process to yield extremely low dropout voltages (for example, 155 mV at 250 mA). Each device achieves fast start-up times (approximately 50 µs with a 0.001-µF bypass capacitor) while consuming low quiescent current (170 µA typical). Moreover, when the device is placed in standby mode, the supply current is reduced to less than µA. The TPS79428 exhibits approximately 32 µVRMS of output voltage noise at 2.8 V output 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.

open-in-new Find other Linear regulators (LDO)
Download
Similar products you might be interested in
open-in-new Compare products
Same functionality and pinout but is not an equivalent to the compared device:
TPS796 ACTIVE 1-A, low-dropout voltage regulator with enable P2P in SOT-223, higher current
Same functionality but is not pin-for-pin or parametrically equivalent to the compared device:
TPS799 ACTIVE 200-mA, low-IQ, low-dropout voltage regulator with low-noise & enable Smaller size, lower noise
NEW TPS7A20 ACTIVE 300-mA, ultra-low-noise, low-IQ, low-dropout (LDO) linear regulator with high PSRR Much smaller size, much lower IQ, much lower noise, improved PSRR, reduced in-rush current, wider VIN Range
TPS7A90 ACTIVE 500-mA, low-noise, high-PSRR, adjustable ultra-low-dropout voltage regulator with high-accuracy Much lower noise, improved PSRR>30 kHz, similar thermal dissipation but 58% smaller package, 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 12
Type Title Date
* Datasheet Ultralow-Noise, High-PSRR, Fast, RF, 250-mA Low-Dropout Linear Regulators datasheet (Rev. E) Jan. 03, 2006
Application notes LDO Noise Demystified (Rev. B) Aug. 18, 2020
Technical articles LDO basics: capacitor vs. capacitance Aug. 01, 2018
Technical articles LDO Basics: Preventing reverse current Jul. 25, 2018
Application notes PowerPAD™ Thermally Enhanced Package (Rev. H) Jul. 06, 2018
Technical articles LDO basics: introduction to quiescent current Jun. 20, 2018
Application notes LDO PSRR Measurement Simplified (Rev. A) Aug. 09, 2017
Technical articles LDO basics: noise – part 1 Jun. 14, 2017
User guides TI Power Reference Design for Xilinx® Artix®-7 (AC701) May 12, 2014
User guides PMP7977 User's Guide Sep. 11, 2013
Application notes Using 3.3-V Signals for Spartan-3 Configuration and JTAG Ports (Rev. A) Apr. 13, 2004
User guides DEM-SOT223LDO Demonstration Fixture Oct. 15, 2003

Design & development

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

Hardware development

EVALUATION BOARDS Download
document-generic User guide
5
Description

The Texas Instruments DEM-SOT223LDO demonstration module (DEM) helps designers evaluate the operation and performance of Texas Instruments low-dropout regulators (LDOs).  This module is compatible with most positive output LDOs offered in the SOT223 (DCQ) package.

Design tools & simulation

SIMULATION MODELS Download
SLVMBR6.ZIP (81 KB) - PSpice Model
SIMULATION MODELS Download
SLVMBR7.ZIP (2 KB) - PSpice Model
SIMULATION MODELS Download
SLVMBU3.ZIP (2 KB) - PSpice Model
SIMULATION MODELS Download
SLVMBU4.ZIP (83 KB) - PSpice Model
SIMULATION MODELS Download
SLVMBU5.ZIP (83 KB) - PSpice Model
SIMULATION MODELS Download
SLVMBU6.ZIP (2 KB) - PSpice Model
SIMULATION MODELS Download
SLVMBU7.ZIP (2 KB) - PSpice Model
SIMULATION MODELS Download
SLVMBU8.ZIP (83 KB) - PSpice Model
SIMULATION MODELS Download
SLVMBU9.ZIP (80 KB) - PSpice Model
SIMULATION MODELS Download
SLVMBV0.ZIP (2 KB) - PSpice Model
SIMULATION MODELS Download
SLVMBV1.ZIP (2 KB) - PSpice Model
SIMULATION MODELS Download
SLVMBV2.ZIP (82 KB) - PSpice Model
PCB LAYOUTS Download
TIDU151.PDF (6781 KB)

Reference designs

REFERENCE DESIGNS Download
Xilinx Artix 7 FPGA with PMBus Power Management Reference Design
PMP7977 The Artix 7 power management reference design board uses power modules, linear regulators, and a PMBus compliant system controller to supply all required core and auxiliary voltages needed by the FPGA, including DDR memory termination. A Digital Power graphical user interface is used to monitor the (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
HVSSOP (DGN) 8 View options
SOT-223 (DCQ) 6 View options

Ordering & quality

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos

Related videos