LTC3786
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LTC3786

Low IQ Synchronous Boost Controller

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file View Data Sheet (Rev.E)
Documentation View All Documentation
LTspice LTC3786 Demo Circuit - High Efficiency Li-Ion Battery to USB Boost Converter (2.7-5V to 5V @ 5A) Download 4.00KB LTspice LTC3786 Demo Circuit - High Current Single Output Synchronous Boost Supply (5V-24V to 24V @ 3-5A) Download 4.00KB LTspice LTC3786 - Step-Up (Boost) Regulators Download 2.94 KB
Part Models 20
1ku List Price Starting From $3.05
Features
  • Synchronous Operation For Highest Efficiency and Reduced Heat Dissipation
  • Wide VIN Range: 4.5V to 38V (40V Abs Max) and Operates Down to 2.5V After Start-Up
  • Output Voltages Up to 60V
  • ±1% 1.2V Reference Voltage
  • RSENSE or Inductor DCR Current Sensing
  • 100% Duty Cycle Capability for Synchronous MOSFET
  • Low Quiescent Current: 55μA
  • Phase-Lockable Frequency (75kHz to 850kHz)
  • Programmable Fixed Frequency (50kHz to 900kHz)
  • Adjustable Output Voltage Soft-Start
  • Power Good Output Voltage Monitor
  • Low Shutdown Current IQ: <8μA
  • Internal 5.4V LDO for Gate Drive Supply
  • Thermally Enhanced 16-Pin 3mm × 3mm QFN and MSOP Packages
  • AEC-Q100 Qualified for Automotive Applications
Additional Details
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The LTC3786 is a high performance synchronous boost converter controller that drives all N-channel power MOSFETs. Synchronous rectification increases efficiency, reduces power losses and eases thermal requirements, allowing the LTC3786 to be used in high power boost applications.

A 4.5V to 38V input supply range encompasses a wide range of system architectures and battery chemistries. When biased from the output of the boost converter or another auxiliary supply, the LTC3786 can operate from an input supply as low as 2.5V after start-up. The 55μA no-load quiescent current extends operating run time in battery-powered systems.

The operating frequency can be set for a 50kHz to 900kHz range or synchronized to an external clock using the internal PLL. The LTC3786 also features a precision 1.2V reference and a power good output indicator. The SS pin ramps the output voltage during start-up. The PLLIN/MODE pin selects among Burst Mode® operation, pulse-skipping mode or continuous inductor current mode at light loads.

APPLICATIONS

  • Industrial and Automotive Power Supplies
  • Automotive Start-Stop Systems
  • Medical Devices
  • High Voltage Battery-Powered Systems
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file View Data Sheet (Rev.E)
Documentation View All Documentation
LTspice LTC3786 Demo Circuit - High Efficiency Li-Ion Battery to USB Boost Converter (2.7-5V to 5V @ 5A) Download 4.00KB LTspice LTC3786 Demo Circuit - High Current Single Output Synchronous Boost Supply (5V-24V to 24V @ 3-5A) Download 4.00KB LTspice LTC3786 - Step-Up (Boost) Regulators Download 2.94 KB
Part Models 20
1ku List Price Starting From $3.05
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LTC3786

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Data Sheet

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UPDATED 09/15/2016
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LTC3786: Low IQ Synchronous Boost Controller Data Sheet (Rev.E)

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UPDATED 10/27/2011
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LTC3786: 低消費電流の同期整流式昇圧コントローラ データシート

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UPDATED 11/24/2010
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DC1641A - Demo Manual redirect icon

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UPDATED 03/26/2018
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R526 Reliability Data redirect icon

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UPDATED 04/01/2011
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Low IQ, Triple Output Boost/Buck/Buck Synchronous Controller Keeps Electronics Running Through Battery Transients in Automotive Start-Stop and Always-On Systems redirect icon

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UPDATED 04/01/2012
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High Voltage, High Current Battery Charger Works with All Converter Topologies, Any Battery Configuration redirect icon

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UPDATED 09/16/2014
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LTC3786: High Efficiency Li-Ion Battery-to-USB Boost Converter redirect icon

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UPDATED 09/16/2014
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LTC3786: 高电压锂离子电池至 USB 升压型转换器 redirect icon

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UPDATED 09/16/2014
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LTC3786: リチウムイオン・バッテリからUSBへの高効率昇圧コンバータ redirect icon

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Documentation

Technical Documents 6
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Data Sheet 1

LTC3786: Low IQ Synchronous Boost Controller Data Sheet (Rev.E)

Reliability Data 1

R526 Reliability Data

User Guide 1

DC1641A - Demo Manual

Technical Articles 3

Low IQ, Triple Output Boost/Buck/Buck Synchronous Controller Keeps Electronics Running Through Battery Transients in Automotive Start-Stop and Always-On Systems
High Voltage, High Current Battery Charger Works with All Converter Topologies, Any Battery Configuration
LTC3786: High Efficiency Li-Ion Battery-to-USB Boost Converter

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
LTC3786EMSE#PBF 16-Lead MSOP w/ EP external-link
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LTC3786EMSE#TRPBF 16-Lead MSOP w/ EP external-link
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LTC3786EUD#PBF 16-Lead QFN (3mm x 3mm x 0.75mm w/ EP) external-link
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LTC3786EUD#TRPBF 16-Lead QFN (3mm x 3mm x 0.75mm w/ EP) external-link
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LTC3786HMSE#PBF 16-Lead MSOP w/ EP external-link
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LTC3786HMSE#TRPBF 16-Lead MSOP w/ EP external-link
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LTC3786HMSE#WPBF 16-Lead MSOP w/ EP external-link
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LTC3786HMSE#WTRPBF 16-Lead MSOP w/ EP external-link
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LTC3786HUD#PBF 16-Lead QFN (3mm x 3mm x 0.75mm w/ EP) external-link
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LTC3786HUD#TRPBF 16-Lead QFN (3mm x 3mm x 0.75mm w/ EP) external-link
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LTC3786HUD#WPBF 16-Lead QFN (3mm x 3mm x 0.75mm w/ EP) external-link
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LTC3786HUD#WTRPBF 16-Lead QFN (3mm x 3mm x 0.75mm w/ EP) external-link
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LTC3786IMSE#PBF 16-Lead MSOP w/ EP external-link
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LTC3786IMSE#TRPBF 16-Lead MSOP w/ EP external-link
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  • Material Declaration external-link
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LTC3786IMSE#WPBF 16-Lead MSOP w/ EP external-link
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LTC3786IMSE#WTRPBF 16-Lead MSOP w/ EP external-link
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LTC3786IUD#PBF 16-Lead QFN (3mm x 3mm x 0.75mm w/ EP) external-link
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LTC3786IUD#TRPBF 16-Lead QFN (3mm x 3mm x 0.75mm w/ EP) external-link
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  • Material Declaration external-link
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LTC3786IUD#WPBF 16-Lead QFN (3mm x 3mm x 0.75mm w/ EP) external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
LTC3786IUD#WTRPBF 16-Lead QFN (3mm x 3mm x 0.75mm w/ EP) external-link
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Oct 11, 2022

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Epoxy Change from Henkel 8290 to 8290A for MSOP Package

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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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Feb 4, 2020

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Laser Top Mark for 16-Lead MSOP Packages Assembled in ADPG and UTAC

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Jun 5, 2024

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Epoxy Change from Henkel 8290 to 8290A for MSOP Package (2)

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Jul 12, 2022

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UTAC Thai Limited (UTL) as Alternate Assembly Site for MSOP Packages [With Modification in BOM]

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Oct 11, 2022

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Epoxy Change from Henkel 8290 to 8290A for MSOP Package

LTC3786EMSE#PBF

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LTC3786EMSE#TRPBF

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LTC3786HMSE#PBF

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PCN22_0244_Form

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Material_Report

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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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Feb 4, 2020

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Laser Top Mark for 16-Lead MSOP Packages Assembled in ADPG and UTAC

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LTC3786EMSE#TRPBF

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Jun 5, 2024

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Jul 12, 2022

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UTAC Thai Limited (UTL) as Alternate Assembly Site for MSOP Packages [With Modification in BOM]

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Jun 21, 2022

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Software & Part Ecosystem

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Evaluation Kits 1

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DC1641A

LTC3786 MS16E Demo Board 5V VIN 24V; VOUT = 24V @ Up to 10A

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DC1641A

LTC3786 MS16E Demo Board 5V VIN 24V; VOUT = 24V @ Up to 10A

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DC1641A
LTC3786 MS16E Demo Board 5V VIN 24V; VOUT = 24V @ Up to 10A
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Product Detail

Demonstration circuit DC1641 is DC/DC boost converter featuring the LTC3786 constant frequency current mode boost controller. The DC1641A operates over 5V to 24V input and provides over 5A at 6V input voltage and over 9A of output current at 10V input as shown in figure 3. The 350kHz constant frequency operation results in small and efficient circuit. The converter provides high output voltage accuracy (typically ±3%) over wide load range with no minimum load requirement. The demonstration circuit can be easily modified to generate different output voltages.

Resources

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DC1641A - Desgin Files Download

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DC1641A - Schematic Download

55.02 K

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DC1641A - Demo Manual Download

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Evaluation Kits1

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DC1641A

LTC3786 MS16E Demo Board 5V VIN 24V; VOUT = 24V @ Up to 10A

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

LTC3786 Demo Circuit - High Efficiency Li-Ion Battery to USB Boost Converter (2.7-5V to 5V @ 5A) Download

4.00K

spice tool Lt Spice

LTC3786 Demo Circuit - High Current Single Output Synchronous Boost Supply (5V-24V to 24V @ 3-5A) Download

4.00K

spice tool Lt Spice

LTC3786 - Step-Up (Boost) Regulators Download

2.94 K

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