Power Management Switching Regulator SEPIC Regulators
Power Management Switching Regulator Step-Up (Boost) Regulators External Power Switch Boost
 Space & Harsh Environment Extended Temperature Plastic (H & MP) Extended Temperature (H & MP) Switching Regulators

LTC6908 - Dual Output Oscillator with Spread Spectrum Modulation

LTC6909 - 1 to 8 Output, Multiphase Oscillator with Spread Spectrum Modulation
more options

LT4363 - High Voltage Surge Stopper with Current Limit

LTC3862 - Multi-Phase Current Mode Step-Up DC/DC Controller

Features

  • Wide VIN Range: 4V to 36V Operation
  • 2-Phase Operation Reduces Input and Output Capacitance
  • Fixed Frequency, Peak Current Mode Control
  • 5V Gate Drive for Logic-Level 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 5V LDO Regulator
  • 24-Lead Narrow SSOP Package
  • 5mm × 5mm QFN with 0.65mm Lead Pitch and
    24-Lead Thermally Enhanced TSSOP Packages

Typical Application

LTC3862 Typical Application
LTC3862 Typical Application

Description

The LTC3862 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 5V gate drive is optimized for most automotive and industrial grade power MOSFETs.

Adjustable slope compensation gain allows the user to fine- tune the current loop gain, improving noise immunity.
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 5V 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

Packaging

For complete and up to date package information and drawings, please refer to our packaging page

SSOP-24, QFN-24

LTC3862 Package Drawing
LTC3862 Package Drawing
LTC3862 Package Drawing

Order Info

Package Variations and Pricing

Part Number Package Pins Temp Price (1-99) Price (1k)* RoHS Data
LTC3862EFE#PBF TSSOP 24 E $4.87 $3.41 View
LTC3862EFE#TRPBF TSSOP 24 E $3.47 View
LTC3862EFE-1#PBF TSSOP 24 E $4.87 $3.41 View
LTC3862EFE-1#TRPBF TSSOP 24 E $3.47 View
LTC3862EFE-2#PBF TSSOP 24 E $4.87 $3.41 View
LTC3862EFE-2#TRPBF TSSOP 24 E $3.47 View
LTC3862EGN#PBF SSOP 24 E $4.70 $3.29 View
LTC3862EGN#TRPBF SSOP 24 E $3.35 View
LTC3862EGN-1#PBF SSOP 24 E $4.70 $3.29 View
LTC3862EGN-1#TRPBF SSOP 24 E $3.35 View
LTC3862EGN-2#PBF SSOP 24 E $4.70 $3.29 View
LTC3862EGN-2#TRPBF SSOP 24 E $3.35 View
LTC3862EUH#PBF QFN 24 E $4.70 $3.29 View
LTC3862EUH#TRPBF QFN 24 E $3.35 View
LTC3862EUH-1#PBF QFN 24 E $4.70 $3.29 View
LTC3862EUH-1#TRPBF QFN 24 E $3.35 View
LTC3862EUH-2#PBF QFN 24 E $4.70 $3.29 View
LTC3862EUH-2#TRPBF QFN 24 E $3.35 View
LTC3862HFE#PBF TSSOP 24 H $5.89 $4.12 View
LTC3862HFE#TRPBF TSSOP 24 H $4.18 View
LTC3862HFE-1#PBF TSSOP 24 H $5.89 $4.12 View
LTC3862HFE-1#TRPBF TSSOP 24 H $4.18 View
LTC3862HFE-2#PBF TSSOP 24 H $5.89 $4.12 View
LTC3862HFE-2#TRPBF TSSOP 24 H $4.18 View
LTC3862HGN#PBF SSOP 24 H $5.71 $4.00 View
LTC3862HGN#TRPBF SSOP 24 H $4.06 View
LTC3862HGN-1#PBF SSOP 24 H $5.71 $4.00 View
LTC3862HGN-1#TRPBF SSOP 24 H $4.06 View
LTC3862HGN-2#PBF SSOP 24 H $5.71 $4.00 View
LTC3862HGN-2#TRPBF SSOP 24 H $4.06 View
LTC3862HUH#PBF QFN 24 H $5.71 $4.00 View
LTC3862HUH#TRPBF QFN 24 H $4.06 View
LTC3862HUH-1#PBF QFN 24 H $5.71 $4.00 View
LTC3862HUH-1#TRPBF QFN 24 H $4.06 View
LTC3862HUH-2#PBF QFN 24 H $5.71 $4.00 View
LTC3862HUH-2#TRPBF QFN 24 H $4.06 View
LTC3862IFE#PBF TSSOP 24 I $5.46 $3.82 View
LTC3862IFE#TRPBF TSSOP 24 I $3.88 View
LTC3862IFE-1#PBF TSSOP 24 I $5.46 $3.82 View
LTC3862IFE-1#TRPBF TSSOP 24 I $3.88 View
LTC3862IFE-2#PBF TSSOP 24 I $5.46 $3.82 View
LTC3862IFE-2#TRPBF TSSOP 24 I $3.88 View
LTC3862IGN#PBF SSOP 24 I $5.30 $3.71 View
LTC3862IGN#TRPBF SSOP 24 I $3.77 View
LTC3862IGN-1#PBF SSOP 24 I $5.30 $3.71 View
LTC3862IGN-1#TRPBF SSOP 24 I $3.77 View
LTC3862IGN-2#PBF SSOP 24 I $5.30 $3.71 View
LTC3862IGN-2#TRPBF SSOP 24 I $3.77 View
LTC3862IUH#PBF QFN 24 I $5.30 $3.71 View
LTC3862IUH#TRPBF QFN 24 I $3.77 View
LTC3862IUH-1#PBF QFN 24 I $5.30 $3.71 View
LTC3862IUH-1#TRPBF QFN 24 I $3.77 View
LTC3862IUH-2#PBF QFN 24 I $5.30 $3.71 View
LTC3862IUH-2#TRPBF QFN 24 I $3.77 View
Buy Now • Request Samples
* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Part Number Description Price Documentation
DC1286A-A LTC3862EGN Demo Board | Multiphase Current Mode Step-Up DC/DC Controller $125.00
Buy Now
Click here to view our complete list of demo boards

Applications

  • Automotive, Telecom and Industrial Power Supplies

People Who Viewed This Product Also Viewed

Product Notifications

Please login to your MyLinear account for notifications of datasheet updates, new document releases and LTspice model announcements for your favorite products. If you do not have a MyLinear account you may Sign Up Now.

Forgot your password? Click here.
Need help? Email mylinear@linear.com with questions and comments.

Simulate

LTspice IV is a powerful, fast and free simulation tool, schematic capture and waveform viewer with enhancements and models for improving the simulation of switching regulators. To download LTspice IV and other FREE simulation tools, please visit our Design Simulation page.

To launch a ready to run LTspice demonstration circuit for this part:

To explore other ready to run LTspice demonstration circuits, please visit our Demo Circuits Collection.

Related models available in LTspice IV
LTC3862-1
LTC3862-2
LTC3862

Technical Support