LT8301
Info : RECOMMENDED FOR NEW DESIGNS
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LT8301

42VIN Micropower No-Opto Isolated Flyback Converter with 65V/1.2A Switch

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Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 18
1ku List Price Starting From $3.31
Features
  • AEC-Q100 Qualified for Automotive Applications
  • 2.7V to 42V Input Voltage Range
  • 1.2A, 65V Internal DMOS Power Switch
  • Low Quiescent Current:
    • 100µA in Sleep Mode
    • 350µA in Active Mode
  • Boundary Mode Operation at Heavy Load
  • Low-Ripple Burst Mode® Operation at Light Load
  • Minimum Load <0.5% (Typ) of Full Output
  • VOUT Set with a Single External Resistor
  • No Transformer Third Winding or Opto-Isolator Required for Regulation
  • Accurate EN/UVLO Threshold and Hysteresis
  • Internal Compensation and Soft-Start
  • Output Short-Circuit Protection
  • 5-Lead TSOT-23 Package
Additional Details
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The LT8301 is a micropower isolated flyback converter. By sampling the isolated output voltage directly from the primary-side flyback waveform, the part requires no third winding or opto-isolator for regulation. The output voltage is programmed with a single external resistor. Internal compensation and soft-start further reduce external component count. Boundary mode operation provides a small magnetic solution with excellent load regulation. Low ripple Burst Mode operation maintains high efficiency at light load while minimizing the output voltage ripple. A 1.2A, 65V DMOS power switch is integrated along with all high voltage circuitry and control logic into a 5-lead ThinSOT package.

The LT8301 operates from an input voltage range of 2.7V to 42V and can deliver up to 6W of isolated output power. The high level of integration and the use of boundary and low ripple burst modes result in a simple to use, low component count, and high efficiency application solution for isolated power delivery.

Applications

  • Isolated Telecom, Automotive, Industrial, Medical Power Supplies
  • Isolated Auxiliary/Housekeeping Power Supplies
Part Models 18
1ku List Price Starting From $3.31

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Documentation

Documentation

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Apr 11, 2019

- 19_0067

Notification of Wafer Fab Location Change for 0.35 BCD Process

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Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 2

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DC2138B

LT8301ES5 Isolated Demo Board | No-Opto Flyback, 10V ≤ VIN ≤ 32V, VOUT = 5V @ 0.7A to 1A

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DC2138B

LT8301ES5 Isolated Demo Board | No-Opto Flyback, 10V ≤ VIN ≤ 32V, VOUT = 5V @ 0.7A to 1A

LT8301ES5 Isolated Demo Board | No-Opto Flyback, 10V ≤ VIN ≤ 32V, VOUT = 5V @ 0.7A to 1A

Product Detail

Demonstration circuit 2138B is an isolated flyback converter featuring the LT8301. This demo circuit outputs 5V from a 10V to 32V input, with a nominal of 24V. The output current capability increases with the input voltage. The standby input current of the demo circuit is less than 950μA (typical) at VIN = 24V.

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DC2737A

LT8301ES5 Demo Board | No-Opto Isolated Flyback Converter, VIN = 10V to 32V, VOUT = 5V @ up to 700mA

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DC2737A

LT8301ES5 Demo Board | No-Opto Isolated Flyback Converter, VIN = 10V to 32V, VOUT = 5V @ up to 700mA

LT8301ES5 Demo Board | No-Opto Isolated Flyback Converter, VIN = 10V to 32V, VOUT = 5V @ up to 700mA

Product Detail

Demonstration circuit 2737A is an isolated flyback converter featuring the LT8301. The demo circuit outputs 5V from input 10V to 32V, with a nominal 24V. The output current capability increases with the input voltage. The standby input current of the demo circuit is less than 950μA (typical) at VIN = 24V.

Tools & Simulations

Tools & Simulations 1

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.

Reference Designs

Reference Designs 2

Figure 1. CN0550 Simplified Block Diagram

Low/Full/High-Speed USB 2.0 Isolator with Isolated Power

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CN0550

Low/Full/High-Speed USB 2.0 Isolator with Isolated Power

CN0550

Circuits from the lab

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Low/Full/High-Speed USB 2.0 Isolator with Isolated Power

Features and Benefits

  • Isolated Low-speed, Full-speed, and High-speed USB 2.0
  • Auto Negotiation of USB Interface Speed
  • Delivers Isolated Power from the Host
  • Isolation Rating up to 1.75kV RMS
  • Standard USB Type A Connectors onboard
View Detailed Reference Design external link

Design & Integration Tools

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ZIP

6.16 M

4-Channel Multiplexed HART Analog Output Circuit

Completely Isolated 4-Channel Analog Output Circuit for PLC/DCS Systems with HART

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CN0418

Completely Isolated 4-Channel Analog Output Circuit for PLC/DCS Systems with HART

CN0418

Circuits from the lab

tooltip Info:Circuits from the lab
Completely Isolated 4-Channel Analog Output Circuit for PLC/DCS Systems with HART

Features and Benefits

  • 4-Channels
  • +/- 10V , 4-20mA outputs
  • HART Compatible
  • Dynamic Power Control
  • Digital Slew Rate Limiting
View Detailed Reference Design external link

Design & Integration Tools

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ZIP

2.95 M

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