LTC3114-1
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LTC3114-1

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

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LTspice LTC3114-1 Demo Circuit - Wide Vin Range Regulator with Bootstrapped LDO (2.7-40V to 5V @ 1A) Download 3.00KB LTspice LTC3114-1 - Buck-Boost Regulators Download 2.12 KB
Part Models 24
1ku List Price Starting From $4.72
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
  • AEC-Q100 Qualified for Automotive Applications
Additional Details
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The LTC3114-1 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.

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
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file View Data Sheet (Rev.D)
Documentation View All Documentation
LTspice LTC3114-1 Demo Circuit - Wide Vin Range Regulator with Bootstrapped LDO (2.7-40V to 5V @ 1A) Download 3.00KB LTspice LTC3114-1 - Buck-Boost Regulators Download 2.12 KB
Part Models 24
1ku List Price Starting From $4.72
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LTC3114-1

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Data Sheet

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UPDATED 03/16/2016
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LTC3114-1: 40V, 1A Synchronous Buck-Boost DC/DC Converter with Programmable Output Current Data Sheet (Rev.D)

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UPDATED 06/20/2014
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LTC3114-1: 出力電流をプログラム可能な40V、1A同期整流式昇降圧DC/DCコンバータ データシート

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UPDATED 02/01/2021
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SCP-LTC3114-1-EVALZ - Demo Manual (Rev.0) redirect icon

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UPDATED 12/20/2016
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DC1821B - Demo Manual redirect icon

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UPDATED 03/26/2018
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Documentation

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LTC3114EDHC-1#PBF 16-Lead DFN (5mm x 3mm w/ EP) external-link
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LTC3114EDHC-1#TRPBF 16-Lead DFN (5mm x 3mm w/ EP) external-link
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LTC3114EFE-1#PBF 16-Lead TSSOP w/ EP external-link
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LTC3114EFE-1#TRPBF 16-Lead TSSOP w/ EP external-link
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LTC3114EFE-1#WPBF 16-Lead TSSOP w/ EP external-link
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LTC3114EFE-1#WTRPBF 16-Lead TSSOP w/ EP external-link
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LTC3114HDHC-1#PBF 16-Lead DFN (5mm x 3mm w/ EP) external-link
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LTC3114HDHC-1#TRPBF 16-Lead DFN (5mm x 3mm w/ EP) external-link
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LTC3114HFE-1#PBF 16-Lead TSSOP w/ EP external-link
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LTC3114HFE-1#TRPBF 16-Lead TSSOP w/ EP external-link
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LTC3114IDHC-1#PBF 16-Lead DFN (5mm x 3mm w/ EP) external-link
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LTC3114IDHC-1#TRPBF 16-Lead DFN (5mm x 3mm w/ EP) external-link
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LTC3114IDHC-1#WPBF 16-Lead DFN (5mm x 3mm w/ EP) external-link
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LTC3114IDHC-1#WTRPBF 16-Lead DFN (5mm x 3mm w/ EP) external-link
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LTC3114IFE-1#PBF 16-Lead TSSOP w/ EP external-link
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LTC3114IFE-1#TRPBF 16-Lead TSSOP w/ EP external-link
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LTC3114IFE-1#WPBF 16-Lead TSSOP w/ EP external-link
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LTC3114IFE-1#WTRPBF 16-Lead TSSOP w/ EP external-link
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LTC3114MPDHC-1#PBF 16-Lead DFN (5mm x 3mm w/ EP) external-link
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LTC3114MPDHC-1#TRPBF 16-Lead DFN (5mm x 3mm w/ EP) external-link
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LTC3114MPFE-1#PBF 16-Lead TSSOP w/ EP external-link
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LTC3114MPFE-1#TRPBF 16-Lead TSSOP w/ EP external-link
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Jul 31, 2020

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Notification of Wafer Fab Location Change for 0.6µm BICMOS Process Devices from ADI Milpitas (Hillview) to Vanguard Int. (Taiwan)

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Apr 12, 2022

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Moisture Sensitivity Level Rating Change of LTC3114-1, LTC3115-1, LTC3115-2 with #W for LFCSP Package.

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Apr 6, 2022

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Mar 4, 2022

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Moisture Sensitivity Level Rating Change of LTC3114-1 with #W eTSSOP Package.

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Apr 12, 2022

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Apr 6, 2022

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Mar 4, 2022

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Software & Part Ecosystem

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Evaluation Kits 2

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SCP-LTC3114-1-EVALZ

LTC3114 Signal Chain Evaluation Board | 40V, 1A Synchronous Buck-Boost DC/DC Converter with Programmable Output Current

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SCP-LTC3114-1-EVALZ

LTC3114 Signal Chain Evaluation Board | 40V, 1A Synchronous Buck-Boost DC/DC Converter with Programmable Output Current

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SCP-LTC3114-1-EVALZ
LTC3114 Signal Chain Evaluation Board | 40V, 1A Synchronous Buck-Boost DC/DC Converter with Programmable Output Current
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Product Detail

Demonstration circuit SCP-LTC3114-1-EVALZ features the LTC3114-1, a wide operating range, synchronous mono-lithic buck-boost converter with programmable average output current. The circuit operates with a 2.2V to 40V in-put voltage range.

Like all boards in the Signal Chain Power series, this board is designed to be easily plugged into other SCP boards to form a complete signal chain power system, enabling fast evaluation of low power signal chains. To evaluate this board, some universal SCP hardware is required, namely:

  • SCP-INPUT-EVALZ
  • SCP-OUTPUT-EVALZ
  • SCP-1X5BKOUT-EVALZ
  • SCP-THRUBRD-EVALZ
  • SCP-FILTER-EVALZ
  • SCP-1X2BKOUT-EVALZ
  • SCP-5X1-EVALZ

 

To properly evaluate SCP series demo boards, you will need the SCP Configurator companion software. SCP Configurator can help you choose the right board and topology for your design.

Note that the Demo Manual does not cover details important to the operation and configuration regarding the LTC3114-1. Please refer to the LTC3114-1 data sheet for a complete description of the part.

Resources

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SCP-LTC3114-1-EVALZ - Demo Manual (Rev.0) Download

1.61 M

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SCP-LTC3114-1-EVALZ - Design Files Download

3.28 M

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SCP-LTC3114-1-EVALZ - Schematic Download

80.35 K

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DC1821B

LTC3114EDHC-1 Demo Board | Sync Buck-Boost, VIN=2.7V to 40V, VOUT = 5V @ Up to 1A

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DC1821B

LTC3114EDHC-1 Demo Board | Sync Buck-Boost, VIN=2.7V to 40V, VOUT = 5V @ Up to 1A

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DC1821B
LTC3114EDHC-1 Demo Board | Sync Buck-Boost, VIN=2.7V to 40V, VOUT = 5V @ Up to 1A
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Product Detail

Demonstration circuit 1821B features the LTC3114-1, a wide operating range synchronous monolithic buck-boost converter with programmable average output current. DC1821B operates with a 2.7V to 40V input voltage range. The demo board has been designed with the output voltage set to 5V and can provide up to 1A output with VIN > 6V. It features two user selectable operating modes: Burst Mode® operation and Fixed Frequency PWM (JP2). There is also an accurate programmable RUN pin which is used to ENABLE the converter (JP1).


The LTC3114-1 uses average current mode control to simplify voltage loop compensation and provide good line and load transient response. It incorporates a proprietary low noise switching algorithm which optimizes efficiency with input voltages above, below or equal to the output voltage and ensures seamless transitions between operating modes.


 


 


Resources

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DC1821B - Design File Download

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DC1821B - Schematic Download

88.00K

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DC1821B - Demo Manual Download

472.00K

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Evaluation Kits2

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SCP-LTC3114-1-EVALZ

LTC3114 Signal Chain Evaluation Board | 40V, 1A Synchronous Buck-Boost DC/DC Converter with Programmable Output Current

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DC1821B

LTC3114EDHC-1 Demo Board | Sync Buck-Boost, VIN=2.7V to 40V, VOUT = 5V @ Up to 1A

Tools & Simulations 2

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

To launch ready-to-run LTspice demonstration circuits for this part:

Step 1: Download and install LTspice on your computer.

Step 2: Click on the link in the section below to download a demonstration circuit.

Step 3: If LTspice does not automatically open after clicking the link below, 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.

spice tool Lt Spice

LTC3114-1 Demo Circuit - Wide Vin Range Regulator with Bootstrapped LDO (2.7-40V to 5V @ 1A) Download

3.00K

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LTC3114-1 - Buck-Boost Regulators Download

2.12 K

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