LTC7806

RECOMMENDED FOR NEW DESIGNS

LTC7806

40V, Low I_Q, 3MHz, 2-Phase Synchronous Boost Controller

RECOMMENDED FOR NEW DESIGNS

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Part Models 6

1ku List Price Starting From $3.85

Features

2-Phase Operation Reduces Required Input and Output Capacitance and Power Supply Induced Noise
Synchronous Operation for Highest Efficiency and Reduced Heat Dissipation
Wide Input Voltage Range: 4.5V to 40V, Operates Down to 1V After Start-Up
Output Voltage Up to 40V
Low Operating Quiescent Current: 18μA
PassThru^™ Operation: 100% Duty Cycle Capability for Synchronous MOSFET
R_SENSE or Inductor DCR Current Sensing

Spread Spectrum Operation
Programmable Fixed Frequency (100kHz to 3MHz)
Phase-Lockable Frequency (100kHz to 3MHz)
Selectable Continuous, Pulse-Skipping, or Low Ripple Burst Mode^® Operation at Light Loads
Input Current Monitor Output
Internal LDO Powers Gate Drive from V_BIAS or EXTV_CC
Low Shutdown I_Q: 1.5μA
Side Wettable 28-Lead 4mm × 5mm QFN Package
AEC-Q100 Qualified for Automotive Applications

Additional Details

The LTC7806 is a high performance 2-phase single output synchronous boost converter controller that drives two N-channel power MOSFET stages out-of-phase. Its constant-frequency current mode architecture allows a phase-lockable switching frequency of up to 3MHz. High frequency 2-phase operation reduces input and output capacitor requirements and allows the use of smaller inductors compared to the single-phase equivalent. Synchronous rectification increases efficiency, reduces power losses, and eases thermal requirements, simplifying high power boost applications. The synchronous PassThru capability also minimizes losses in automotive start-stop applications.

The LTC7806 operates from a wide 4.5V to 40V input supply range. When biased from the boost converter output, the LTC7806 can operate from an input supply as low as 1V after start-up. The very low no-load quiescent current extends operating run time in battery powered systems. OPTI-LOOP^® compensation allows the transient response to be optimized over a wide range of output capacitance and ESR values. The LTC7806 features a precision 1.2V reference, a power good output indicator, and an inductor current monitor.

APPLICATIONS

Automotive and Transportation
Audio and RF Power Amplifiers
Industrial and Medical
Communications

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Ask a Question

Submit your question below and we will return the best answer from ADI’s knowledge database:

Other places you can find help

Support

Analog Devices Support Portal is a one-stop shop to answer all your ADI questions.

Visit the ADI Support Page

Ask the ADI community for help.

Ask the EngineerZone Community

FAQs

Sales & Ordering FAQs

Part Models 6

1ku List Price Starting From $3.85

Documentation

Technical Documents 2

LTC7806: 40V, Low I_Q, 3MHz, 2-Phase Synchronous Boost Controller Data Sheet (Rev.B) 08/30/2024

DC2951A - Demo Manual (Rev.0) 08/24/2021

Design Resources 6

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
LTC7806IUFDM#WPBF	28-Lead QFN (4mm x 5mm, Plastic Side Wettable)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
LTC7806IUFDM#WTRPBF	28-Lead QFN (4mm x 5mm, Plastic Side Wettable)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
LTC7806JUFDM#WPBF	28-Lead QFN (4mm x 5mm, Plastic Side Wettable)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
LTC7806JUFDM#WTRPBF	28-Lead QFN (4mm x 5mm, Plastic Side Wettable)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
LTC7806RUFDM#PBF	28-Lead QFN (4mm x 5mm, Plastic Side Wettable)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
LTC7806RUFDM#TRPBF	28-Lead QFN (4mm x 5mm, Plastic Side Wettable)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys

LTC7806IUFDM#WPBF
Pin/Package Drawing
28-Lead QFN (4mm x 5mm, Plastic Side Wettable)
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

LTC7806IUFDM#WTRPBF
Pin/Package Drawing
28-Lead QFN (4mm x 5mm, Plastic Side Wettable)
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

LTC7806JUFDM#WPBF
Pin/Package Drawing
28-Lead QFN (4mm x 5mm, Plastic Side Wettable)
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

LTC7806JUFDM#WTRPBF
Pin/Package Drawing
28-Lead QFN (4mm x 5mm, Plastic Side Wettable)
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

LTC7806RUFDM#PBF
Pin/Package Drawing
28-Lead QFN (4mm x 5mm, Plastic Side Wettable)
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

LTC7806RUFDM#TRPBF
Pin/Package Drawing
28-Lead QFN (4mm x 5mm, Plastic Side Wettable)
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

Software & Part Ecosystem

Evaluation Kit

DC2951A

LTC7806 | 6V to 36V Input, 24V, 10A Output, Synchronous Boost Regulator with Input Current Monitor

LTC7806 | 6V to 36V Input, 24V, 10A Output, Synchronous Boost Regulator with Input Current Monitor

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DC2951A

LTC7806 | 6V to 36V Input, 24V, 10A Output, Synchronous Boost Regulator with Input Current Monitor

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Product Detail

Demonstration circuit 2951A is a boost regulator featuring the LTC7806. The DC2951A operates from a 6V to 36V input voltage range and generates 24V, 10A output from a 12V input. When V_IN ≥ 24V, V_OUT follows V_IN. Also, the LTC7806 has precision voltage reference, which can generate an output voltage with 2% tolerance over the full operating conditions. The 350kHz switching frequency operation results in small and efficient circuit. The converter achieves over 95% efficiency with 10A load. The demonstration circuit can be easily modified to regulate different output voltages.

The DC2951A provides a high performance cost-effective solution for generating output voltages up to 36V from inputs as low as 5V.

The LTC7806 data sheet gives a complete description of this part, its operation and application information and must be read in conjunction with the demo manual.

Resources

PDF

DC2951A - Demo Manual (Rev.0)

751.98 K

ZIP

DC2951A - Gerber Files

411.27 K

PDF

DC2951A - Schematic

107.2 K

DC2951A

LTC7806 | 6V to 36V Input, 24V, 10A Output, Synchronous Boost Regulator with Input Current Monitor

Tools & Simulations

LTspice 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.

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.