LTC3862-2
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LTC3862-2

Multi-Phase Current Mode Step-Up DC/DC Controller

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LTspice LTC3862-2 Demo Circuit - High Power, High Voltage, 4-Phase Boost Converter (6-36V to 50V @ 10A) Download 9.00KB LTspice LTC3862-2 Demo Circuit - Automotive High Output Voltage Boost Converter (5-28V to 75V @ 1A) Download 7.00KB LTspice LTC3862-2 Demo Circuit - Low Noise PolyPhase SEPIC DC/DC Converter (6-28V to 12V @ 1A) Download 8.00KB
Part Models 18
1ku List Price Starting From $3.95
Features
  • Wide VIN Range: 5.5V to 36V Operation
  • 2-Phase Operation Reduces Input and Output Capacitance
  • Fixed Frequency, Peak Current Mode Control
  • Internal 10V LDO Regulator
  • Lower UVLO Thresholds Allows the Use of MOSFETs Rated at 6V VGS
  • Adjustable Slope Compensation Gain
  • Adjustable Max Duty Cycle (Up to 96%)
  • Adjustable Leading Edge Blanking
  • ±1% Internal Voltage Reference
  • Programmable Operating Frequency with One External Resistor (75kHz to 500kHz)
  • Phase-Lockable Fixed Frequency 50kHz to 650kHz
  • SYNC Input and CLKOUT for 2-, 3-, 4-, 6- or 12-Phase Operation (PHASEMODE Programmable)
  • 24-Lead Narrow SSOP Package
  • 5mm × 5mm QFN Package with 0.65mm Lead Pitch
  • 24-Lead Thermally Enhanced TSSOP Package
Additional Details
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The LTC3862-2 is a two-phase constant frequency, current mode boost and SEPIC controller that drives N-channel power MOSFETs. Two-phase operation reduces system filtering capacitance and inductance requirements.

The operating frequency can be set with an external resistor over a 75kHz to 500kHz range and can be synchronized to an external clock using the internal PLL. Multiphase operation is possible using the SYNC input, the CLKOUT output and the PHASEMODE control pin allowing 2-, 3-, 4-, 6- or 12-phase operation.

Other features include an internal 10V LDO with undervoltage lockout protection for the gate drivers, a precision RUN pin threshold with programmable hysteresis, soft-start and programmable leading edge blanking and maximum duty cycle.

Part Number Vin Range INTVcc UV+ UV-
LTC3862 4V to 36V 5V 3.3V 2.9V
LTC3862-1 8.5V to 36V 10V 7.5V 7.0V
LTC3862-2 5.5V to 36V 10V 4.4V 3.9V


Applications

  • Automotive, Telecom and Industrial Power Supplies
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Documentation View All Documentation
LTspice LTC3862-2 Demo Circuit - High Power, High Voltage, 4-Phase Boost Converter (6-36V to 50V @ 10A) Download 9.00KB LTspice LTC3862-2 Demo Circuit - Automotive High Output Voltage Boost Converter (5-28V to 75V @ 1A) Download 7.00KB LTspice LTC3862-2 Demo Circuit - Low Noise PolyPhase SEPIC DC/DC Converter (6-28V to 12V @ 1A) Download 8.00KB
Part Models 18
1ku List Price Starting From $3.95
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LTC3862-2

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Data Sheet

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UPDATED 12/31/2013
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LTC3862-2: Multi-Phase Current Mode Step-Up DC/DC Controller Data Sheet

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UPDATED 04/14/2014
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LTC3862-2: マルチフェーズ電流モード昇圧DC/DCコントローラ データシート

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User Guide

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UPDATED 10/03/2012
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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
LTC3862EFE-2#PBF 24-Lead TSSOP w/ EP external-link
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LTC3862EFE-2#TRPBF 24-Lead TSSOP w/ EP external-link
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LTC3862EGN-2#PBF 24-Lead SSOP (Narrow 0.15 Inch) external-link
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LTC3862EGN-2#TRPBF 24-Lead SSOP (Narrow 0.15 Inch) external-link
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LTC3862EUH-2#PBF 24-Lead QFN (5mm x 5mm x 0.75mm w/ EP) external-link
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LTC3862EUH-2#TRPBF 24-Lead QFN (5mm x 5mm x 0.75mm w/ EP) external-link
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LTC3862HFE-2#PBF 24-Lead TSSOP w/ EP external-link
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LTC3862HFE-2#TRPBF 24-Lead TSSOP w/ EP external-link
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LTC3862HGN-2#PBF 24-Lead SSOP (Narrow 0.15 Inch) external-link
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LTC3862HGN-2#TRPBF 24-Lead SSOP (Narrow 0.15 Inch) external-link
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LTC3862HUH-2#PBF 24-Lead QFN (5mm x 5mm x 0.75mm w/ EP) external-link
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LTC3862HUH-2#TRPBF 24-Lead QFN (5mm x 5mm x 0.75mm w/ EP) external-link
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LTC3862IFE-2#PBF 24-Lead TSSOP w/ EP external-link
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LTC3862IFE-2#TRPBF 24-Lead TSSOP w/ EP external-link
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LTC3862IGN-2#PBF 24-Lead SSOP (Narrow 0.15 Inch) external-link
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LTC3862IGN-2#TRPBF 24-Lead SSOP (Narrow 0.15 Inch) external-link
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LTC3862IUH-2#PBF 24-Lead QFN (5mm x 5mm x 0.75mm w/ EP) external-link
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LTC3862IUH-2#TRPBF 24-Lead QFN (5mm x 5mm x 0.75mm w/ EP) external-link
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Laser Top Mark for ETSSOP and TSSOP Packages Assembled in ADPG [PNG] and UTL

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Laser Top Mark Conversion for QSOP20_24_28 Assembled in ADPG [PNG] and UTL

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LTC3862EGN-2#TRPBF

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LTC3862HGN-2#PBF

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Software & Part Ecosystem

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Evaluation Kits 3

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DC2006A-A

LTC3862EUH-2 Demo Board | Boost Controller, 6V ≤ VIN ≤ 36V; VOUT = 50V @ 10A

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DC2006A-A

LTC3862EUH-2 Demo Board | Boost Controller, 6V ≤ VIN ≤ 36V; VOUT = 50V @ 10A

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DC2006A-A
LTC3862EUH-2 Demo Board | Boost Controller, 6V ≤ VIN ≤ 36V; VOUT = 50V @ 10A
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Product Detail

Demonstration circuit 2006A-A is a multiphase high power, high voltage step-up DC/DC converter featuring the LTC3862-2 boost controller. This demo board converts a 6V to 36V input voltage to a 50V output at up to 10A with four phases by utilizing and synchronizing two LTC3862-2 controller IC’s.


 


Resources

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DC2006A - Design Files Download

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DC2006A - Schematic Download

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DC2006A-A - Demo Manual Download

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DC2006A-B

LTC3862EUH-2 Demo Board | Boost Controller, 6V ≤ VIN ≤ 36V; VOUT = 120V @ 2A

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DC2006A-B

LTC3862EUH-2 Demo Board | Boost Controller, 6V ≤ VIN ≤ 36V; VOUT = 120V @ 2A

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DC2006A-B
LTC3862EUH-2 Demo Board | Boost Controller, 6V ≤ VIN ≤ 36V; VOUT = 120V @ 2A
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Product Detail

Demonstration circuit 2006A-B is a multiphase high power, high voltage step-up DC/DC converter featuring two the LTC3862-2 boost controllers. This demo board converts a 6V to 36V input voltage to a 120V output at up to 2.5A with two stages. The first stage converts the input voltage to 50V. The second stage converts the 50V to 120V and each stage uses one LTC3862-2.


 


Resources

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DC2006A - Design Files Download

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DC2006A - Schematic Download

129.00K

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DC2006A-B - Demo Manual Download

757.00K

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DC1891A

LTC3862EFE-2 Demo Board | 2-Phase SEPIC, 6V ≤ VIN ≤ 60V; VOUT = 12V @ 6A

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DC1891A

LTC3862EFE-2 Demo Board | 2-Phase SEPIC, 6V ≤ VIN ≤ 60V; VOUT = 12V @ 6A

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DC1891A
LTC3862EFE-2 Demo Board | 2-Phase SEPIC, 6V ≤ VIN ≤ 60V; VOUT = 12V @ 6A
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Product Detail

Demonstration circuit 1891A is a 2-phase high efficiency nonisolated SEPIC (Single Ended Primary Inductor Converter) converter featuring the LTC3862-2 switching controller. The DC1891A converts a 6V to 60V input to a 12V output and provides 6A of output current. The DC1891A can be easily modified to generate output voltages in the range from 0.8V to 48V.

Resources

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DC1891A - Demo Manual Download

1.00M

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DC1891A - Schematic Download

62.00K

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DC1891A - Design Files Download

1.00M

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Evaluation Kits3

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DC2006A-A

LTC3862EUH-2 Demo Board | Boost Controller, 6V ≤ VIN ≤ 36V; VOUT = 50V @ 10A
evaluation kit item images

DC2006A-B

LTC3862EUH-2 Demo Board | Boost Controller, 6V ≤ VIN ≤ 36V; VOUT = 120V @ 2A
evaluation kit item images

DC1891A

LTC3862EFE-2 Demo Board | 2-Phase SEPIC, 6V ≤ VIN ≤ 60V; VOUT = 12V @ 6A

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

LTC3862-2 Demo Circuit - High Power, High Voltage, 4-Phase Boost Converter (6-36V to 50V @ 10A) Download

9.00K

spice tool Lt Spice

LTC3862-2 Demo Circuit - Automotive High Output Voltage Boost Converter (5-28V to 75V @ 1A) Download

7.00K

spice tool Lt Spice

LTC3862-2 Demo Circuit - Low Noise PolyPhase SEPIC DC/DC Converter (6-28V to 12V @ 1A) Download

8.00K

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