Home Power management Linear & low-dropout (LDO) regulators
Home
Power management
Linear & low-dropout (LDO) regulators

LP2951

ACTIVE

100-mA, 30-V, low-dropout voltage regulator with power good & enable

Order now
Data sheet

LP2951

ACTIVE
Data sheet Order now

Product details

Rating Catalog Vin (max) (V) 30 Vin (min) (V) 2 Iout (max) (A) 0.1 Output options Adjustable Output, Fixed Output Vout (max) (V) 29 Vout (min) (V) 1.2 Fixed output options (V) 3, 3.3, 5 Noise (µVrms) 160 PSRR at 100 KHz (dB) 57 Iq (typ) (mA) 0.075 Features Enable, Power good Thermal resistance θJA (°C/W) 52, 97 Load capacitance (min) (µF) 1 Regulated outputs (#) 1 Accuracy (%) 3 Dropout voltage (Vdo) (typ) (mV) 380 Operating temperature range (°C) -40 to 125
Rating Catalog Vin (max) (V) 30 Vin (min) (V) 2 Iout (max) (A) 0.1 Output options Adjustable Output, Fixed Output Vout (max) (V) 29 Vout (min) (V) 1.2 Fixed output options (V) 3, 3.3, 5 Noise (µVrms) 160 PSRR at 100 KHz (dB) 57 Iq (typ) (mA) 0.075 Features Enable, Power good Thermal resistance θJA (°C/W) 52, 97 Load capacitance (min) (µF) 1 Regulated outputs (#) 1 Accuracy (%) 3 Dropout voltage (Vdo) (typ) (mV) 380 Operating temperature range (°C) -40 to 125
SOIC (D) 8 29.4 mm² (4.9 mm × 6 mm) WSON (DRG) 8 9 mm² (3 mm × 3 mm)
filter Find other Linear & low-dropout (LDO) regulators
There are no details available for this product.
open-in-new Find other Linear & low-dropout (LDO) regulators
Download View video with transcript Video

Similar products you might be interested in

open-in-new Compare alternates
Same functionality with different pin-out to the compared device.
TPS7A25 ACTIVE 300-mA, 18-V, ultra-low-IQ, high-accuracy, adjustable low-dropout voltage regulator with power good This is a higher output (300-mA) LDO with power good and lower IQ (2.5 μA)
TPS7B91 ACTIVE 150mA 40V 1.5μA IQ low-dropout linear regulator Increased voltage range up to 40V
TPS709 ACTIVE 150-mA, 30-V, ultra-low-IQ, low-dropout voltage regulator with reverse current protection and enable Improved IQ (1uA)

Technical documentation

No results found. Please clear your search and try again.
View all 36
Top documentation Type Title Format options Date
* Data sheet LP295x 100mA, 30V, Adjustable Voltage Regulator With Shutdown datasheet (Rev. L) PDF | HTML Jun 19, 2026
Application note An empirical analysis of the impact of board layout on LDO thermal performance (Rev. A) PDF | HTML Sep 23, 2025
Application note L1 and L2 EV Charger Electric Vehicle Service Equipment Design Considerations (Rev. B) Jun 9, 2021
Application note LDO Noise Demystified (Rev. B) PDF | HTML Aug 18, 2020
Application note ESR, Stability, and the LDO Regulator (Rev. A) Jan 7, 2020
Application note A Topical Index of TI LDO Application Notes (Rev. F) Jun 27, 2019
E-book LDO Basics (Rev. A) Apr 8, 2019
Application note Fundamental Theory of PMOS LDO Voltage Regulators (Rev. A) Aug 17, 2018
Application note LDO PSRR Measurement Simplified (Rev. A) PDF | HTML Aug 9, 2017
Technical article LDO basics: dropout PDF | HTML Mar 16, 2017
Technical article How to use an LDO as a load switch PDF | HTML Feb 1, 2016
Technical article Two ways LDOs save power in the IoT PDF | HTML Aug 17, 2015
Technical article How to use an LDO to protect a power source PDF | HTML Jul 25, 2015
Application note A Topical Index of TI Supply Voltage Supervisor (SVS) Application Notes Jun 15, 2015
Analog design Journal Techniques for accurate PSRR measurements Oct 28, 2013
Application note AN-1028 Maximum Power Enhancement Techniques for Power Packages (Rev. B) May 6, 2013
Application note AN-1482 LDO Regulator Stability Using Ceramic Output Capacitors (Rev. A) Apr 25, 2013
Application note AN-1815 LDOs Ease the Stress of Start-Up (Rev. A) Apr 24, 2013
Application note AN-1061 Power Conversion in Line-Powered Equipment (Rev. B) Apr 23, 2013
Application note AN-1950 Silently Powering Low Noise Applications (Rev. A) Apr 22, 2013
Application note LDO Performance Near Dropout Oct 8, 2010
Application note 3.6V – 5.5V Input, LDO with Dual-Level Output Reference Design for MSP430 (Rev. A) Jun 14, 2010
Application note 3.6V – 5.5V Input, LDO Reference Design for MSP430 (Rev. A) Jun 14, 2010
Application note Packaging Limits Range of Linear Regulators May 8, 2010
Application note Simple Power Solution Using LDOs for the DM365 (Rev. A) Sep 11, 2009
Application note Digital Designer's Guide to Linear Voltage Regulators & Thermal Mgmt (LDO) (Rev. A) Jun 4, 2008
Application note Low-Voltage Current Loop Transmitter Aug 2, 2007
Application note Battery Charging Mar 21, 2007
Application note Linear and Switching Voltage Regulator Fundamental Part 1 Mar 21, 2007
Application note Ceramic Capacitors Replace Tantalum Capacitors in LDOs (Rev. A) Oct 13, 2006
Application note Understanding LDO Dropout May 9, 2005
White paper Versatility of the LM5030 PWM Push-Pull Controller Dec 1, 2003
Application note Extending the Input Voltage Range of an LDO Regulator Aug 16, 2002
Application note Understanding the Terms and Definitions of LDO Voltage Regulators Oct 21, 1999
Application note Technical Review of Low Dropout Voltage Regulator Operation And Performance Aug 30, 1999
Application brief Low Power 150-mA LDO Linear Regulators. Extended Output Voltage Adjustment Range Jun 11, 1999

Design & development

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

Evaluation board

LP2951EVM — LP2951 Fixed/Adjustable Micropower Low-Dropout (LDO) Regulator Evaluation Module

The LP2951 devices are bipolar low-dropout (LDO) voltage regulators that can accommodate a wide input supply-voltage range of up to 30 V with an output load up to 100 mA. The LP2951EVM allows for flexibility in design, allowing the user to add or remove input and output capacitors, as well as (...)
User guide: PDF
Supported products & hardware
In stock
Limit:
??asset.out-of-stock-ti_en_US??
Not available
Simulation model

LP2951 PSpice Transient Model (Rev. A)

SNVM037A.ZIP (23 KB) - PSpice model
Supported products & hardware
Simulation model

LP2951 Unencrypted PSpice Transient Model

SNVMAO3.ZIP (1 KB) - PSpice model
Supported products & hardware
Reference design

PMP20852 — 3W Isolated Triple Output Flyback Converter Reference Design

PMP20852 is an isolated flyback converter reference design with primary-side regulation using the UCC2805 controller IC. There are three independently isolated outputs on the secondary side, each of which use LP2951 linear regulators to provide a well-regulated 16V output on each of the three (...)
Supported products & hardware
Reference design

PMP21872 — Small form factor 12-Vin, 1-Vout 40-A dual-phase synchronous buck reference design

This reference design is a dual-phase synchronous buck solution using TPS53622 controller with two CSD95490Q5MC power-stage ICs. It takes a 12-V input and converts it to 1-V out at 40 A; 20 A per phase.
Supported products & hardware
Reference design

PMP31179 — 400-W AC/DC reference design for avionics

This is a compact, 30-V DC, 400-W reference design for avionics applications that works with mains frequency between 400 Hz and 800 Hz. A two-phase interleaved transition mode (TM) power factor correction (PFC) based on UCC28064A is used to correct power factor and minimizes harmonic content of (...)
Supported products & hardware
Reference design

TIDA-010025 — Three-phase inverter reference design for 200-480 VAC drives with opto-emulated input gate drivers

This reference design realizes a reinforced isolated three-phase inverter subsystem using isolated IGBT gate drivers and isolated current/voltage sensors. The UCC23513 gate driver used has a 6-pin wide body package with optical LED emulated inputs which enables its use as pin-to-pin replacement to (...)
Supported products & hardware
Reference design

TIDA-010076 — Daisy-chained power and data over single pair Ethernet (T1) reference design

The TIDA-010076 shows the transfer of 220-W power and 100-Mbit/s data over SPE. Communication systems in daisy-chain topology need significantly less hardware and wiring than conventional systems in star-topology. When combined with single-pair Ethernet (SPE, 100BASE-T1) and power over data line, (...)

Supported products & hardware
Package Pins CAD symbols, footprints & 3D models
SOIC (D) 8 Ultra Librarian
WSON (DRG) 8 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

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

View all forum topics

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