LTC3786

PRODUCTION

Low IQ Synchronous Boost Controller

Data Sheet (Rev. E) Product Selection Table
Part Models
20
1ku List Price
Starting From $3.05
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Part Details

  • Synchronous Operation For Highest Efficiency and Reduced Heat Dissipation
  • Wide VIN Range: 4.5V to 38V (40V Abs Max) and Operates Down to 2.5V After Start-Up
  • Output Voltages Up to 60V
  • ±1% 1.2V Reference Voltage
  • RSENSE or Inductor DCR Current Sensing
  • 100% Duty Cycle Capability for Synchronous MOSFET
  • Low Quiescent Current: 55μA
  • Phase-Lockable Frequency (75kHz to 850kHz)
  • Programmable Fixed Frequency (50kHz to 900kHz)
  • Adjustable Output Voltage Soft-Start
  • Power Good Output Voltage Monitor
  • Low Shutdown Current IQ: <8μA
  • Internal 5.4V LDO for Gate Drive Supply
  • Thermally Enhanced 16-Pin 3mm × 3mm QFN and MSOP Packages
  • AEC-Q100 Qualified for Automotive Applications
LTC3786
Low IQ Synchronous Boost Controller
LTC3786 Application Circuit LTC3786 Pin Configuration LTC3786 Pin Configuration LTC3786 Performance Graph
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Documentation

Data Sheet 1

Reliability Data 1

User Guide 1

Technical Articles 3

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Hardware Ecosystem

Parts Product Life Cycle Description
Surge Stopper, Overvoltage, and Overcurrent Protection 1
LT4363
RECOMMENDED FOR NEW DESIGNS High Voltage Surge Stopper with Current Limit
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Tools & Simulations

LTspice 3

Models for the following parts are available in LTspice:

  • LTC3786

LTpowerCAD 1

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.

LTpowerCAD

LTpowerCAD® is a power supply design program which selects power stage components, provides detailed power efficiency, shows quick loop Bode plot stability and load transient analysis, and can export to LTspice for simulation.

Evaluation Kits

eval board
schematic 1
schematic 2
schematic 3
schematic 4
schematic 5
DC1641A

LTC3786 MS16E Demo Board 5V VIN 24V; VOUT = 24V @ Up to 10A

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Product Details

Demonstration circuit DC1641 is DC/DC boost converter featuring the LTC3786 constant frequency current mode boost controller. The DC1641A operates over 5V to 24V input and provides over 5A at 6V input voltage and over 9A of output current at 10V input as shown in figure 3. The 350kHz 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.
DC1641A
LTC3786 MS16E Demo Board 5V VIN 24V; VOUT = 24V @ Up to 10A
DC1641A Demo Board DC1641A Demo Board DC1641A Demo Board DC1641A Demo Board DC1641A - Schematic

Latest Discussions

2 Years Ago
RE: Questions about the LTC3786 ripple voltage equation
2 Years Ago
RE: Loop Analysis Problems in Ltspice
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