LT3012 - 250mA, 4V to 80V Low Dropout Micropower Linear Regulator

Features

  • Wide Input Voltage Range: 4V to 80V
  • Low Quiescent Current: 40µA
  • Low Dropout Voltage: 400mV
  • Output Current: 250mA
  • No Protection Diodes Needed
  • Adjustable Output from 1.24V to 60V
  • 1µA Quiescent Current in Shutdown
  • Stable with 3.3µF Output Capacitor
  • Stable with Aluminum, Tantalum or Ceramic Capacitors
  • Reverse-Battery Protection
  • No Reverse Current Flow from Output to Input
  • Thermal Limiting
  • Thermally Enhanced 16-Lead TSSOP and 12-Pin (4mm × 3mm) DFN Packages
Designed for Automotive and Transportation Applications
AEC-Q100 data available for specific packages


Typical Application

LT3012 Typical Application
LT3012 Typical Application

Description

The LT3012 is a high voltage, micropower low dropout linear regulator. The device is capable of supplying 250mA of output current with a dropout voltage of 400mV. Designed for use in battery-powered or high voltage systems, the low quiescent current (40µA operating and 1µA in shutdown) makes the LT3012 an ideal choice. Quiescent current is also well controlled in dropout.

Other features of the LT3012 include the ability to operate with very small output capacitors. The regulators are stable with only 3.3µF on the output while most older devices require between 10µF and 100µF for stability. Small ceramic capacitors can be used without any need for series resistance (ESR) as is common with other regulators. Internal protection circuitry includes reverse-battery protection, current limiting, thermal limiting and reverse current protection.

The device is available with an adjustable output with a 1.24V reference voltage. The LT3012 regulator is available in the 16-lead TSSOP and 12 pin low profile (0.75mm) (4mm × 3mm) DFN packages with an exposed pad for enhanced thermal handling capability.

  Shutdown Pin
LT3012 Yes
LT3012B No

Packaging

CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.

For complete and up to date package information and drawings, please refer to our packaging page

Part Number Package Code Temp Package
Drawing
RoHS
LT3012EDE#PBF 4x3 DFN-12 DE/UE E 05-08-1695 Yes
LT3012EDE#TRPBF 4x3 DFN-12 DE/UE E 05-08-1695 Yes
LT3012EFE#PBF TSSOP-16 FE E 05-08-1663 (BB) Yes
LT3012EFE#TRPBF TSSOP-16 FE E 05-08-1663 (BB) Yes
LT3012HFE#PBF TSSOP-16 FE H 05-08-1663 (BB) Yes
LT3012HFE#TRPBF TSSOP-16 FE H 05-08-1663 (BB) Yes


LT3012 Package Drawing
LT3012 Package Drawing

Order Info

  • Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
  • Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
  • Please refer to our general ordering information or the product datasheet for more details

Package Variations and Pricing

Part Number Package Temp Price
(1-99)
Price
(1k)*
RoHS
LT3012EDE#PBF 4x3 DFN-12 E $2.93 $2.05 Yes
LT3012EDE#TRPBF 4x3 DFN-12 E $2.15 Yes
LT3012EFE#PBF TSSOP-16 E $3.14 $2.20 Yes
LT3012EFE#TRPBF TSSOP-16 E $2.32 Yes
LT3012HFE#PBF TSSOP-16 H $3.90 $2.73 Yes
LT3012HFE#TRPBF TSSOP-16 H $2.79 Yes
Buy NowRequest Samples
* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Click here to view our complete list of demo boards

Designed for Automotive and Transportation Applications

AEC-Q100 data is available for these specific part numbers. Please contact your local sales representative for more information regarding reliability reports or to inquire about parts that are not included. For more information, view our Automotive and Transportation page

Part Number Package Temp Price
(1-99)
Price
(1k)*
RoHS
LT3012HFE#PBF TSSOP-16 H $3.90 $2.73 Yes
LT3012HFE#TRPBF TSSOP-16 H $2.79 Yes
Buy NowRequest Samples
* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Applications

  • Low Current High Voltage Regulators
  • Regulator for Battery-Powered Systems
  • Telecom Applications
  • Automotive Applications

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Design Tools

LTspice

LTspice® software is a powerful, fast and free simulation tool, schematic capture and waveform viewer with enhancements and models for improving the simulation of switching regulators. Click here to download LTspice

To launch a ready to run LTspice demonstration circuit for this part:

  • Step 1: If you have not installed LTspice on this computer, download and install LTspice
  • Step 2: Once LTspice is installed, click on the link(s) below to launch the simulation
  • Step 3: If LTspice does not automatically open after clicking the link above, you can instead run the simulation by right clicking on the link and selecting "Save Target As." After saving the file to your computer, start LTspice and open the demonstration circuit by selecting 'Open' from the 'File' menu

To explore other ready to run LTspice demonstration circuits, please visit our Demo Circuits Collection.

Models for the following parts are available in LTspice:
LT3012
LT3012B

Technical Support