Power Management Switching Regulator Buck-Boost Regulators Internal Power Switch Buck-Boost
Space & Harsh Environment Extended Temperature Plastic (H & MP) Extended Temperature (H & MP) Switching Regulators

LTC4364 - Surge Stopper with Ideal Diode

LTC3114-1 - 40V, 1A Synchronous Buck-Boost DC/DC Converter with Programmable Output Current

Features

  • Regulates VOUT Above, Below or Equal to VIN
  • Single Inductor
  • Wide VIN Range: 2.2V to 40V
  • Wide VOUT Range: 2.7V to 40V
  • 1A Output Current in Buck Mode
  • 0.5A Output Current, VIN = 3.6V, VOUT = 5V
  • Programmable Average Output Current
  • Up to 96% Efficiency
  • Burst Mode® Operation, 30μA No-Load IQ
  • Current Mode Control
  • 1.2MHz Ultralow Noise PWM
  • Accurate RUN Pin Threshold
  • Thermally Enhanced, 16-lead 3mm × 5mm DFN and TSSOP Packages

Typical Application

LTC3114-1 Typical Application
LTC3114-1 Typical Application

Description

The LTC®3114-1 is a versatile, wide operating voltage range synchronous monolithic buck-boost DC/DC converter with programmable average output current. The LTC3114-1’s proprietary buck-boost PWM control circuitry delivers low noise operation across the entire operating voltage range. Current mode control ensures exceptional line and load transient responses.

Synchronous, internal MOSFET switches and pin selectable Burst Mode operation maintain high efficiency across the entire range of load current. Average output current is programmed with a standard resistor and provides the basis for wide input range, high efficiency charging systems or constant current, high efficiency LED drive. Regulator turn-on is programmable through the accurate RUN pin. Quiescent current is just 3μA in shutdown. Overtemperature protection, short-circuit protection and soft-start are integrated. The LTC3114-1 is offered in 16-lead 3mm × 5mm × 0.75mm DFN and 16 lead TSSOP (FE) packages.

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
LTC3114EDHC-1#PBF 5x3 DFN-16 DHC E 05-08-1706 Yes
LTC3114EDHC-1#TRPBF 5x3 DFN-16 DHC E 05-08-1706 Yes
LTC3114EFE-1#PBF TSSOP-16 FE E 05-08-1663 (BB) Yes
LTC3114EFE-1#TRPBF TSSOP-16 FE E 05-08-1663 (BB) Yes
LTC3114HDHC-1#PBF 5x3 DFN-16 DHC H 05-08-1706 Yes
LTC3114HDHC-1#TRPBF 5x3 DFN-16 DHC H 05-08-1706 Yes
LTC3114HFE-1#PBF TSSOP-16 FE H 05-08-1663 (BB) Yes
LTC3114HFE-1#TRPBF TSSOP-16 FE H 05-08-1663 (BB) Yes
LTC3114IDHC-1#PBF 5x3 DFN-16 DHC I 05-08-1706 Yes
LTC3114IDHC-1#TRPBF 5x3 DFN-16 DHC I 05-08-1706 Yes
LTC3114IFE-1#PBF TSSOP-16 FE I 05-08-1663 (BB) Yes
LTC3114IFE-1#TRPBF TSSOP-16 FE I 05-08-1663 (BB) Yes
LTC3114MPDHC-1#PBF 5x3 DFN-16 DHC MP 05-08-1706 Yes
LTC3114MPDHC-1#TRPBF 5x3 DFN-16 DHC MP 05-08-1706 Yes
LTC3114MPFE-1#PBF TSSOP-16 FE MP 05-08-1663 (BB) Yes
LTC3114MPFE-1#TRPBF TSSOP-16 FE MP 05-08-1663 (BB) Yes


LTC3114-1 Package Drawing
LTC3114-1 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
LTC3114EDHC-1#PBF 5x3 DFN-16 E $5.64 $3.95 Yes
LTC3114EDHC-1#TRPBF 5x3 DFN-16 E $4.01 Yes
LTC3114EFE-1#PBF TSSOP-16 E $5.64 $3.95 Yes
LTC3114EFE-1#TRPBF TSSOP-16 E $4.01 Yes
LTC3114HDHC-1#PBF 5x3 DFN-16 H $6.57 $4.60 Yes
LTC3114HDHC-1#TRPBF 5x3 DFN-16 H $4.66 Yes
LTC3114HFE-1#PBF TSSOP-16 H $6.57 $4.60 Yes
LTC3114HFE-1#TRPBF TSSOP-16 H $4.66 Yes
LTC3114IDHC-1#PBF 5x3 DFN-16 I $6.22 $4.35 Yes
LTC3114IDHC-1#TRPBF 5x3 DFN-16 I $4.41 Yes
LTC3114IFE-1#PBF TSSOP-16 I $6.22 $4.35 Yes
LTC3114IFE-1#TRPBF TSSOP-16 I $4.41 Yes
LTC3114MPDHC-1#PBF 5x3 DFN-16 MP $16.76 $11.73 Yes
LTC3114MPDHC-1#TRPBF 5x3 DFN-16 MP $11.79 Yes
LTC3114MPFE-1#PBF TSSOP-16 MP $16.76 $11.73 Yes
LTC3114MPFE-1#TRPBF TSSOP-16 MP $11.79 Yes
Buy Now • Request 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.

Part Number Description Price Documentation
DC1821B LTC3114EDHC-1 Demo Board | Sync Buck-Boost, VIN=2.7V to 40V, VOUT = 5V @ Up to 1A $175.00
Buy Now
Click here to view our complete list of demo boards

Applications

  • 24V/28V Industrial Power Supply
  • 12V Lead-Acid to 12V Regulator
  • High Power LED Driver
  • 12V/24V Solar Panel Battery Charging Systems
  • Automotive Power Systems

People Who Viewed This Product Also Viewed

Product Notifications

Please login to your MyLinear account for notifications of datasheet updates, new document releases and LTspice model announcements for your favorite products. If you do not have a MyLinear account you may Sign Up Now.

Forgot your password? Click here.
Need help? Email mylinear@linear.com with questions and comments.

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:
LTC3114-1

LTpowerCAD

The LTpowerCAD design tool is a complete power supply design tool program that can significantly ease the tasks of power supply design. It guides users to a solution, selects power stage components, provides detailed power efficiency, shows quick loop bode plot stability and load transient analysis, and can export a final design to LTspice for simulation. Click here to download LTpowerCAD

To open the project file for this circuit:

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

Design tools for the following parts are available in LTpowerCAD:
LTC3114-1

Technical Support