LT3758

PRODUCTION

High Input Voltage, Boost, Flyback, SEPIC and Inverting Controller

Data Sheet (Rev. H) Product Selection Table
Part Models
26
1ku List Price
Starting From $2.84
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Part Details

  • Wide Input Voltage Range: 5.5V to 100V
  • Positive or Negative Output Voltage Programming with a Single Feedback Pin
  • Current Mode Control Provides Excellent Transient Response
  • Programmable Operating Frequency (100kHz to 1MHz) with One External Resistor
  • Synchronizable to an External Clock
  • Low Shutdown Current < 1μA
  • Internal 7.2V Low Dropout Voltage Regulator
  • Programmable Input Undervoltage Lockout with Hysteresis
  • Programmable Soft-Start
  • Small 10-Lead DFN (3mm × 3mm) and MSOPE Packages
  • AEC-Q100 Qualified for Automotive Applications
LT3758
High Input Voltage, Boost, Flyback, SEPIC and Inverting Controller
LT3758/LT3758A Application Circuit LT3758/LT3758A Pin Configuration LT3758/LT3758A Pin Configuration
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Documentation

Data Sheet 1

Reliability Data 1

User Guide 2

Application Note 1

Technical Articles 2

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Hardware Ecosystem

Parts Product Life Cycle Description
Digital Temperature Sensors 1
LTC2991
RECOMMENDED FOR NEW DESIGNS Octal I2C Voltage, Current, and Temperature Monitor
Ideal Diode Bridge 1
LT4320
LT4320-1
Ideal Diode Bridge Controller
Surge Stopper, Overvoltage, and Overcurrent Protection 1
LTC4366
RECOMMENDED FOR NEW DESIGNS High Voltage Surge Stopper
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Tools & Simulations

LTspice 5

Models for the following parts are available in LTspice:

  • LT3758
  • LT3758A
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
DC1412A

LT3758EMSE Demo Board | Flyback, VIN: 18V to 75V, VOUT: 3.3V/3A, (3 × 3 QFN)

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Product Details

Demonstration circuit 1412A features the LT3758EMSE in a 300kHz Flyback converter circuit, designed for 3.3V/3A output from a 18V to 75V input. The LT3758EMSE operates over an input range of 5.5V to 100V, suitable for automotive, telecom and industrial applications. It also exhibits low shutdown quiescent current of 1μA, making them an ideal fit for battery-operated systems. Thanks to a novel FBX pin architecture, the LT3758EMSE can be connected directly to a divider from either a positive output or a negative output to ground.

eval board
schematic 2
schematic 3
schematic 4
schematic 5
schematic 6
DC1342B

LT3758EMSE Demo Board | SEPIC, VIN: 18V to 72V, VOUT: 24V/1A, (3 × 3 QFN)

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Product Details

Demonstration circuit 1342B features the LT3758AEMSE in a 300kHz SEPIC converter circuit, designed for a 24V output from a 18V to 72V input. The LT3758A operates over an input range of 5.5V to 100V, and features a novel FBX pin architecture, which allows it to be connected directly to a resistor divider from either a positive output voltage or a negative output voltage.


 
DC1412A
LT3758EMSE Demo Board | Flyback, VIN: 18V to 75V, VOUT: 3.3V/3A, (3 × 3 QFN)
DC1412A - Schematic
DC1342B
LT3758EMSE Demo Board | SEPIC, VIN: 18V to 72V, VOUT: 24V/1A, (3 × 3 QFN)
DC1342B Demo Board DC1342B Demo Board DC1342B Demo Board DC1342B Demo Board DC1342B - Schematic

Latest Discussions

1 Years Ago
RE: Understanding the LT3758 SYNC Voltage Levels
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