LTC3862-1
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LTC3862-1

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

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LTspice LTC3862-1 Demo Circuit - 2-Phase Boost Converter for Diesel Fuel Injector Actuator (8.5-28V to 72V @ 1.5A) Download 5.00KB
Part Models 18
1ku List Price Starting From $3.95
Features
  • Wide VIN Range: 8.5V to 36V Operation
  • 2-Phase Operation Reduces Input and Output Capacitance
  • Fixed Frequency, Peak Current Mode Control
  • 10V Gate Drive for High Voltage MOSFETs
  • 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)
  • Internal 10V LDO Regulator
  • 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 LTC3862-1 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. Multi-phase 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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file View Data Sheet
Documentation View All Documentation
LTspice LTC3862-1 Demo Circuit - 2-Phase Boost Converter for Diesel Fuel Injector Actuator (8.5-28V to 72V @ 1.5A) Download 5.00KB
Part Models 18
1ku List Price Starting From $3.95
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LTC3862-1

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UPDATED 12/09/2013
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LTC3862-1: Multi-Phase Current Mode Step-Up DC/DC Controller Data Sheet

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UPDATED 03/27/2014
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LTC3862-1: 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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UPDATED 09/24/2009
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DC1286A - Demo Manual redirect icon

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UPDATED 01/01/2009
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2-Phase, Non-Synchronous Boost Controller Simplifies Design of High Voltage, High Current Supplies redirect icon

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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-1#PBF 24-Lead TSSOP w/ EP external-link
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LTC3862EFE-1#TRPBF 24-Lead TSSOP w/ EP external-link
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LTC3862EGN-1#PBF 24-Lead SSOP (Narrow 0.15 Inch) external-link
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LTC3862EGN-1#TRPBF 24-Lead SSOP (Narrow 0.15 Inch) external-link
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LTC3862EUH-1#PBF 24-Lead QFN (5mm x 5mm x 0.75mm w/ EP) external-link
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LTC3862EUH-1#TRPBF 24-Lead QFN (5mm x 5mm x 0.75mm w/ EP) external-link
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LTC3862HFE-1#PBF 24-Lead TSSOP w/ EP external-link
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LTC3862HFE-1#TRPBF 24-Lead TSSOP w/ EP external-link
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LTC3862HGN-1#PBF 24-Lead SSOP (Narrow 0.15 Inch) external-link
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LTC3862HGN-1#TRPBF 24-Lead SSOP (Narrow 0.15 Inch) external-link
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LTC3862HUH-1#PBF 24-Lead QFN (5mm x 5mm x 0.75mm w/ EP) external-link
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LTC3862IFE-1#PBF 24-Lead TSSOP w/ EP external-link
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LTC3862IFE-1#TRPBF 24-Lead TSSOP w/ EP external-link
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LTC3862IGN-1#PBF 24-Lead SSOP (Narrow 0.15 Inch) external-link
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LTC3862IGN-1#TRPBF 24-Lead SSOP (Narrow 0.15 Inch) external-link
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LTC3862IUH-1#PBF 24-Lead QFN (5mm x 5mm x 0.75mm w/ EP) external-link
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LTC3862IUH-1#TRPBF 24-Lead QFN (5mm x 5mm x 0.75mm w/ EP) external-link
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Laser Top Mark Conversion for QSOP20_24_28 Assembled in ADPG [PNG] and UTL

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Evaluation Kits 1

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DC1286A-B

LTC3862EGN-1 Demo Board | 8V to 36VIN, 48VOUT @ 5A, Multiphase Boost Controller

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DC1286A-B

LTC3862EGN-1 Demo Board | 8V to 36VIN, 48VOUT @ 5A, Multiphase Boost Controller

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DC1286A-B
LTC3862EGN-1 Demo Board | 8V to 36VIN, 48VOUT @ 5A, Multiphase Boost Controller
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Product Detail

Demonstration circuit 1286A is DC/DC boost converter featuring the LTC3862EGN/-1 constant frequency current mode boost controllers. The DC1286A-A (LTC3862) operates over 5V to 36V input and provides 2A-5A of output current at 48V output. The DC1286A-B (LTC3862-1, higher VIN min and higher gate drive) operates over 8V to 36V input and provides 3A-5A of output current at 48V output. The 200kHz 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.

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DC1286A - Design File Download

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DC1286A - Demo Manual Download

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DC1286A - Schematic Download

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Evaluation Kits1

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DC1286A-B

LTC3862EGN-1 Demo Board | 8V to 36VIN, 48VOUT @ 5A, Multiphase Boost Controller

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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LTC3862-1 Demo Circuit - 2-Phase Boost Converter for Diesel Fuel Injector Actuator (8.5-28V to 72V @ 1.5A) Download

5.00K

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