LTC3115-2
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LTC3115-2

40V, 2A Synchronous Buck-Boost DC/DC Converter

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LTspice LTC3115-2 - Buck-Boost Regulators Download 2.92 KB
Part Models 20
1ku List Price Starting From $6.37
Features
  • Wide VIN Range: 2.7V to 40V
  • Wide VOUT Range: 2.7V to 40V
  • 0.8A Output Current for VIN ≥ 3.6V, VOUT = 5V
  • 2A Output Current in Step-Down Operation for VIN ≥ 6V
  • Programmable Frequency: 100kHz to 2MHz
  • Synchronizable Up to 2MHz with an External Clock
  • Up to 95% Efficiency
  • 30µA No-Load Quiescent Current in Burst Mode® Operation
  • Ultralow Noise Buck-Boost PWM
  • Internal Soft-Start
  • 3µA Supply Current in Shutdown
  • Programmable Input Undervoltage Lockout
  • Small 4mm × 5mm × 0.75mm DFN Package
  • Thermally Enhanced 20-Lead TSSOP Package
  • AEC-Q100 Qualified for Automotive Applications
Additional Details
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The LTC3115-2 is a high voltage monolithic synchronous buck-boost DC/DC converter optimized for applications subject to fast (<1ms) input voltage transients. For all other applications, the LTC3115-1 is recommended. With its wide 2.7V to 40V input and output voltage ranges, the LTC3115-2 is well suited for use in a wide variety of automotive and industrial power supplies. A proprietary low noise switching algorithm optimizes efficiency with input voltages that are above, below or even equal to the output voltage and ensures seamless transitions between operational modes.

Programmable frequency PWM mode operation provides low noise, high efficiency operation and the ability to synchronize switching to an external clock. Switching frequencies up to 2MHz are supported to allow use of small value inductors for miniaturization of the application circuit. Pin selectable Burst Mode operation reduces standby current and improves light load efficiency which, combined with a 3µA shutdown current, make the LTC3115-2 ideally suited for battery-powered applications. Additional features include output disconnect in shutdown, short-circuit protection and internal soft-start. The LTC3115-2 is available in thermally enhanced 16-lead 4mm × 5mm × 0.75mm DFN and 20-lead TSSOP packages.


 Features
LTC3115-1 -
LTC3115-2 Optimized for applications subject to fast (<1ms) input voltage transients

APPLICATIONS

  • 24V/28V Industrial Applications
  • Automotive Power Systems
  • Telecom, Servers and Networking Equipment
  • FireWire Regulator
  • Multiple Power Source Supplies
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LTspice LTC3115-2 - Buck-Boost Regulators Download 2.92 KB
Part Models 20
1ku List Price Starting From $6.37
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LTC3115-2

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UPDATED 06/11/2015
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LTC3115-2: 40V, 2A Synchronous Buck-Boost DC/DC Converter Data Sheet (Rev.C)

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LTC3115-2: 40V、2A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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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.

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LTC3115IDHD-2#PBF 16-Lead DFN (5mm x 4mm w/ EP) external-link
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LTC3115MPFE-2#PBF 20-Lead TSSOP w/ EP external-link
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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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Notification of Wafer Fab Location Change for 0.6µm BICMOS Process Devices from ADI Milpitas (Hillview) to Vanguard Int. (Taiwan)

LTC3115EDHD-2#PBF

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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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Evaluation Kits 1

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DC2119A

LTC3115EDHD-2 Demo Board | 2.7V to 40VIN, 5VOUT @ 2A

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DC2119A

LTC3115EDHD-2 Demo Board | 2.7V to 40VIN, 5VOUT @ 2A

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DC2119A
LTC3115EDHD-2 Demo Board | 2.7V to 40VIN, 5VOUT @ 2A
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Product Detail

Demonstration circuit 2119A features the LTC3115-2, a high voltage monolithic synchronous buck-boost converter optimized for applications with fast input voltage transients. The DC2119A demo board has two user selectable operating modes: Burst Mode© and Forced Continuous Operation (Fixed Frequency PWM) (JP1). There is also an accurate programmable RUN pin which is used to ENABLE the converter (JP2). The DC2119A operates with a 2.7V to 40V input voltage range. The demo board has been designed with the output voltage set to 5.0V. The LTC3115-2 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.

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DC2119A - Schematic Download

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DC2119A - Demo Manual Download

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DC2119A - Design Files Download

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DC2119A

LTC3115EDHD-2 Demo Board | 2.7V to 40VIN, 5VOUT @ 2A

Tools & Simulations 1

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.

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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.

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LTC3115-2 - Buck-Boost Regulators Download

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