LTC3786
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LTC3786

Low IQ Synchronous Boost Controller

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Part Details
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
Part Models 20
1ku List Price Starting From $3.05

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
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Product Lifecycle

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Oct 11, 2022

- 22_0244

Epoxy Change from Henkel 8290 to 8290A for MSOP Package

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PRODUCTION

Jul 31, 2020

- 20_0245

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

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PRODUCTION

Feb 4, 2020

- 20_0132

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

LTC3786EMSE#PBF

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LTC3786IMSE#TRPBF

PRODUCTION

Jul 12, 2022

- 22_0157

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

Jun 21, 2022

- 22_0050

UTAC Thai Limited (UTL) as Alternate Assembly Site for MSOP Packages / Devices

Filter by Model

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Part Models

Product Lifecycle

PCN

Oct 11, 2022

- 22_0244

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Epoxy Change from Henkel 8290 to 8290A for MSOP Package

LTC3786EMSE#PBF

PRODUCTION

LTC3786EMSE#TRPBF

PRODUCTION

LTC3786HMSE#PBF

PRODUCTION

LTC3786HMSE#TRPBF

PRODUCTION

Jul 31, 2020

- 20_0245

arrow down

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

LTC3786EMSE#PBF

PRODUCTION

LTC3786EMSE#TRPBF

PRODUCTION

LTC3786EUD#PBF

PRODUCTION

LTC3786EUD#TRPBF

PRODUCTION

LTC3786HMSE#PBF

PRODUCTION

LTC3786HMSE#TRPBF

PRODUCTION

LTC3786HUD#PBF

PRODUCTION

LTC3786HUD#TRPBF

PRODUCTION

LTC3786IMSE#PBF

PRODUCTION

LTC3786IMSE#TRPBF

PRODUCTION

LTC3786IUD#PBF

PRODUCTION

LTC3786IUD#TRPBF

PRODUCTION

Feb 4, 2020

- 20_0132

arrow down

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

LTC3786EMSE#PBF

PRODUCTION

LTC3786EMSE#TRPBF

PRODUCTION

LTC3786HMSE#PBF

PRODUCTION

LTC3786HMSE#TRPBF

PRODUCTION

LTC3786IMSE#PBF

PRODUCTION

LTC3786IMSE#TRPBF

PRODUCTION

Jul 12, 2022

- 22_0157

arrow down

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

Jun 21, 2022

- 22_0050

arrow down

UTAC Thai Limited (UTL) as Alternate Assembly Site for MSOP Packages / Devices

Software and Part Ecosystem

Software and Part Ecosystem

Evaluation Kit

Evaluation Kits 1

reference details image

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

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

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.

Tools & Simulations

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.

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