LTC3863

RECOMMENDED FOR NEW DESIGNS

60V Low IQ Inverting DC/DC Controller

Data Sheet (Rev. B) Product Selection Table
Part Models
16
1ku List Price
Starting From $2.49
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Part Details

  • Wide Operating VIN Range: 3.5V to 60V
  • Wide Negative VOUT Range: –0.4V to Beyond –150V
  • Low Operating IQ = 70µA
  • Strong High Voltage MOSFET Gate Driver
  • Constant Frequency Current Mode Architecture
  • Verified FMEA for Adjacent Pin Open/Short
  • Selectable High Efficiency Burst Mode® Operation or Pulse-Skipping Mode at Light Loads
  • Programmable Fixed Frequency: 50kHz to 850kHz
  • Phase-Lockable Frequency: 75kHz to 750kHz
  • Accurate Current Limit
  • Programmable Soft-Start or Voltage Tracking
  • Internal Soft-Start Guarantees Smooth Start-Up
  • Low Shutdown IQ = 7µA
  • Available in Small 12-Lead Thermally Enhanced MSOP and DFN Packages
LTC3863
60V Low IQ Inverting DC/DC Controller
4.5V to 16V Input, –5V/1.7A Output, 350kHz Inverting Converter Efficiency Product Package 1 Product Package 2
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Documentation

Data Sheet 1

Reliability Data 1

User Guide 1

Design Note 1

Technical Articles 3

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Hardware Ecosystem

Parts Product Life Cycle Description
High Voltage Hot Swap Controllers 1
LTC4364
RECOMMENDED FOR NEW DESIGNS Surge Stopper with Ideal Diode
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Tools & Simulations

LTspice 2

Models for the following parts are available in LTspice:

  • LTC3863
LTspice

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.

Evaluation Kits

eval board
schematic 1
schematic 2
schematic 3
schematic 4
schematic 5
schematic 6
DC1737A

LTC3863EMSE Demo Board | 4.5V-16V; VOUT = -5.2V @ 1.7A or -12V @ 1A

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Product Details

Demonstration circuit 1737A is a current-mode inverting DC/DC converter featuring the LTC3863. The board operates from an input range of 4.5V to 16V, and provides a –5.2V, 1.7A output or a –12V, 1A output (jumper selectable). It operates at 400kHz and may be synchronized to an external clock. A soft-start feature controls output voltage slew rate at start-up, reducing current surge and voltage overshoot. Burst Mode® operation that improves efficiency at light loads can be enabled with a jumper. A power good output signal is provided. The demonstration board has options for larger MOSFET and diode packages on the back of the board for higher output current requirements.
DC1737A
LTC3863EMSE Demo Board | 4.5V-16V; VOUT = -5.2V @ 1.7A or -12V @ 1A
DC1737A Demo Board DC1737A Demo Board DC1737A Demo Board DC1737A Demo Board DC1737A Demo Board DC1737A - Schematic

Latest Discussions

3 Years Ago
Simply reverse the polarity of the voltage
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4 Years Ago
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