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

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

5x3 DFN-16, TSSOP-16

LTC3114-1 Package Drawing
LTC3114-1 Package Drawing

Order Info

Package Variations and Pricing

Part Number Package Pins Temp Price (1-99) Price (1k)* RoHS Data
LTC3114EDHC-1#PBF DFN 16 E $5.64 $3.95 View
LTC3114EDHC-1#TRPBF DFN 16 E $4.01 View
LTC3114EFE-1#PBF TSSOP 16 E $5.64 $3.95 View
LTC3114EFE-1#TRPBF TSSOP 16 E $4.01 View
LTC3114HDHC-1#PBF DFN 16 H $6.57 $4.60 View
LTC3114HDHC-1#TRPBF DFN 16 H $4.66 View
LTC3114HFE-1#PBF TSSOP 16 H $6.57 $4.60 View
LTC3114HFE-1#TRPBF TSSOP 16 H $4.66 View
LTC3114IDHC-1#PBF DFN 16 I $6.22 $4.35 View
LTC3114IDHC-1#TRPBF DFN 16 I $4.41 View
LTC3114IFE-1#PBF TSSOP 16 I $6.22 $4.35 View
LTC3114IFE-1#TRPBF TSSOP 16 I $4.41 View
LTC3114MPDHC-1#PBF DFN 16 MP $16.76 $11.73 View
LTC3114MPDHC-1#TRPBF DFN 16 MP $11.79 View
LTC3114MPFE-1#PBF TSSOP 16 MP $16.76 $11.73 View
LTC3114MPFE-1#TRPBF TSSOP 16 MP $11.79 View
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.

Part Number Description Price Documentation
DC1821A LTC3114EDHC-1 Demo Board | 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

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

LTspiceIV

LTspice IV 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 IV

Models for the following parts are available in LTspice IV:
LTC3114-1

Technical Support