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Product details

Parameters

Output options Fixed Output Iout (Max) (A) 1 Vin (Max) (V) 26 Vin (Min) (V) 6 Vout (Max) (V) 15 Vout (Min) (V) 5 Fixed output options (V) 5, 8, 9, 10, 12, 15 Noise (uVrms) 150 Iq (Typ) (mA) 10 Thermal resistance θJA (°C/W) 23 Load capacitance (Min) (µF) 22 Rating Catalog Regulated outputs (#) 1 Features Accuracy (%) 2 PSRR @ 100 KHz (dB) 48 Dropout voltage (Vdo) (Typ) (mV) 500 Operating temperature range (C) -40 to 125, -40 to 85 open-in-new Find other Linear regulators (LDO)

Package | Pins | Size

SOT-223 (DCY) 4 46 mm² 6.5 x 7 TO-220 (NDE) 3 47 mm² 10.16 x 4.58 TO-263 (KTT) 3 155 mm² 10.16 x 15.24 WSON (NGN) 8 16 mm² 4 x 4 open-in-new Find other Linear regulators (LDO)

Features

  • Input Voltage Range = 6 V to 26 V
  • Dropout Voltage Typically 0.5 V at IOUT = 1 A
  • Output Current in Excess of 1 A
  • Output Voltage Trimmed Before Assembly
  • Reverse Battery Protection
  • Internal Short Circuit Current Limit
  • Mirror Image Insertion Protection
  • P+ Product Enhancement Tested
open-in-new Find other Linear regulators (LDO)

Description

The LM2940-N and LM2940C positive voltage regulators feature the ability to source 1 A of output current with a dropout voltage of typically 0.5 V and a maximum of 1 V over the entire temperature range. Furthermore, a quiescent current reduction circuit has been included which reduces the ground current when the differential between the input voltage and the output voltage exceeds approximately 3 V. The quiescent current with 1 A of output current and an input-output differential of 5 V is therefore only 30 mA. Higher quiescent currents only exist when the regulator is in the dropout mode (VIN − VOUT ≤ 3 V).

Designed also for vehicular applications, the LM2940-N and LM2940C and all regulated circuitry are protected from reverse battery installations or 2-battery jumps. During line transients, such as load dump when the input voltage can momentarily exceed the specified maximum operating voltage, the regulator will automatically shut down to protect both the internal circuits and the load. The LM2940-N and LM2940C cannot be harmed by temporary mirror-image insertion. Familiar regulator features such as short circuit and thermal overload protection are also provided.

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

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 9
Type Title Date
* Datasheet LM2940x 1-A Low Dropout Regulator datasheet (Rev. J) Dec. 22, 2014
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
Selection guides Low Dropout Regulators Quick Reference Guide (Rev. P) Mar. 21, 2018
Technical articles LDO basics: noise – part 1 Jun. 14, 2017
Application notes Linear power for automated industrial systems Jan. 09, 2015
More literature Die D/S LM2940-5.0 MD8 1A Low Dropout Adjustable Regulator Dec. 20, 2012
Application notes Linear and Switching Voltage Regulator Fundamental Part 1 Mar. 21, 2007

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
Description
DLP® LightCrafter Display 4710 EVM-G2 is an easy to use, plug and play evaluation platform for the Full HD DLP4710 chipset. The DLP4710 chipset is designed to be used in a wide array of display applications like mobile projectors, screenless TVs, interactive displays and digital signage. The DLP4710 (...)
Features
  • 1080p HD display using DLP4710
  • Digital controller for the DLP4710 DMD, DLPC3439
  • PMIC/LED driver for the DLP4710 DMD and DLPC3439 controller, DLPA3005
  • Production ready RGB LED optical engine from YoungOptics
  • DLP4710, DLPC3439 Configuration and Support Firmware
EVALUATION BOARDS Download
document-generic User guide
199
Description
The LMG34XX-BB-EVM is an easy to use breakout board to configure any LMG34XX half bridge board, such as the LMG3410-HB-EVM, as a synchronous buck converter.  By providing a power stage, bias power and logic circuitry this EVM allows for quick measurements of the GaN device switching.  This (...)
Features
  • Input voltage operates up to 600V
  • Simple open loop design to evaluate performance of LMG3410
  • Single PWM input on board for PWM signal with 50 ns dead time
  • Convenient probe points for logic and power stage measurements with oscilloscope probes that have short ground spring probes
EVALUATION BOARDS Download
document-generic User guide
149
Description

The TPA3251EVM Ultra-HD evaluation module demonstrates the TPA3251 integrated circuit from Texas Instruments. The TPA3251 is a high-performance Class-D amplifier that enables true premium sound quality with high efficiency Class-D technology. It features an advanced integrated feedback design and (...)

Features
  • Supports Post-Filter Feedback
  • Self-contained protection system (short circuit, clip and thermal)
  • Standard 2VRMS differential input or single ended line input
  • BTL, PBTL and SE output configurations support
  • Double-sided, plated-through, 2oz. Cu 2 layer PCB layout
  • Supports Audio Plug-In Boards through its (...)

Design tools & simulation

SIMULATION MODELS Download
SBVM448.ZIP (8 KB) - TINA-TI Spice Model
SIMULATION MODELS Download
SBVM449.TSC (101 KB) - TINA-TI Reference Design
SIMULATION MODELS Download
SLVMAN3.ZIP (41 KB) - PSpice Model
SIMULATION MODELS Download
SLVMAN4.ZIP (31 KB) - PSpice Model
SIMULATION MODELS Download
SLVMAN5.ZIP (31 KB) - PSpice Model
SIMULATION MODELS Download
SLVMAN6.ZIP (33 KB) - PSpice Model
SIMULATION MODELS Download
SLVMAN7.ZIP (33 KB) - PSpice Model
SIMULATION MODELS Download
SLVMAN8.ZIP (8 KB) - TINA-TI Spice Model
SIMULATION MODELS Download
SLVMAN9.TSC (94 KB) - TINA-TI Reference Design
SIMULATION MODELS Download
SLVMAO0.TSC (95 KB) - TINA-TI Reference Design
SIMULATION MODELS Download
SLVMAO1.ZIP (8 KB) - TINA-TI Spice Model
SIMULATION MODELS Download
SLVMAO2.ZIP (8 KB) - TINA-TI Spice Model
SIMULATION MODELS Download
SLVMAO3.TSC (93 KB) - TINA-TI Reference Design
SIMULATION MODELS Download
SLVMAO4.TSC (92 KB) - TINA-TI Reference Design
SIMULATION MODELS Download
SLVMAO5.ZIP (8 KB) - TINA-TI Spice Model
SIMULATION MODELS Download
SNVM817.ZIP (34 KB) - PSpice Model
SIMULATION MODELS Download
SNVMA75.ZIP (1 KB) - PSpice Model
SIMULATION MODELS Download
SNVMA76.ZIP (1 KB) - PSpice Model
SIMULATION MODELS Download
SNVMA77.ZIP (1 KB) - PSpice Model
SIMULATION MODELS Download
SNVMA78.ZIP (1 KB) - PSpice Model
SIMULATION MODELS Download
SNVMA79.ZIP (1 KB) - PSpice Model
SIMULATION MODELS Download
SNVMA80.ZIP (1 KB) - PSpice Model

Reference designs

REFERENCE DESIGNS Download
Low Voltage, 50A Sensorless FOC Reference Design for PM or BLDC Motors
TIDM-1003 The design is a 30V to 54 V Brushless DC motor (BLDC) or Permanent-magnet Synchronous Motors (PMSM) controller for low voltage, high current, high power ebike, power tool, fan, and pump applications. The design uses the Texas Instruments UCC27211D MOSFET drivers, CSD19506KCS 80V NexFET™ power (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Compact Full HD 1080p (up to 16 Amps) Projection Display Reference Design Using DLP Pico Technology
TIDA-01226 — This reference design, featuring the DLP Pico™ 0.47-inch TRP Full-HD 1080p display chipset and implemented in the DLP LightCrafter Display 4710 G2 evaluation module (EVM), enables use of full HD resolution for projection display applications such as accessory projectors, screenless displays (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
High Fidelity 175W Class-D Audio Amplifier with Digital Inputs and Processing Reference Design
TIDA-00874 This design turns the extremely high performance analog input TPA3251 Class-D amplifier into a digital input system with audio processing using the highly versatile PCM5242 differential output DAC. Now the full performance of TPA3251 amplifier can be realized with a variety of digital input sources (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
(NEB) 3 View options
DDPAK/TO-263 (KTT) 3 View options
SOT-223 (DCY) 4 View options
TO-220 (NDE) 3 View options
WSON (NGN) 8 View options

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