LT8582
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LT8582

Dual 3A Boost/Inverting/SEPIC DC/DC Converter with Fault Protection

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LTspice LT8582 Demo Circuit - 1.5MHz +5V to ±12V Dual Converter (5V to ±12V @ 550mA) Download 6.00KB LTspice LT8582 - Step-Up (Boost) Regulators Download 5.17 KB
Part Models 4
1ku List Price Starting From $4.48
Features
  • Dual 42V, 3A Combined Power Switch
  • Master/Slave (1.7A/1.3A) Switch Design
  • Wide Input Range: 2.5V to 22V Operating, 40V Maximum Transient
  • Power Good Pin for Event Based Sequencing
  • Switching Frequency Up to 2.5MHz
  • Each Channel Easily Configurable as a Boost, SEPIC, Inverting or Flyback Converter
  • Low VCESAT Switch: 270mV at 2.75A (Typical)
  • Can be Synchronized to an External Clock
  • Output Short-Circuit Protection
  • High Gain SHDN Pin Accepts Slowly Varying Input Signals
  • 24-Pin 7mm × 4mm DFN Package
Additional Details
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The LT8582 is a dual independent channel PWM DC/DC converter with a power good pin and built-in fault protection to help guard against input overvoltage and overtemperature conditions. Each channel consists of a 42V master switch and a 42V slave switch that can be tied together for a total current limit of 3A.

The LT8582 is ideal for many local power supply designs. Each channel can be easily configured in boost, SEPIC, inverting, or flyback configurations. Together, the two channels can produce a 12V and a –12V output with 14.4W of combined output power from a 5V input. In addition, the LT8582’s slave switch allows the part to be configured in high voltage, high power charge pump topologies that are more efficient and require fewer components than traditional circuits.

The LT8582 also features innovative SHDN pin circuitry that allows for slowly varying input signals and an adjustable undervoltage lockout function. Additional features such as output short protection, frequency foldback and soft-start are integrated. The LT8582 is available in a 24-pin 7mm × 4mm DFN package.

Applications

  • Local Power Supply
  • Vacuum Fluorescent Display (VFD) Bias Supplies
  • TFT-LCD Bias Supplies
  • Automotive Engine Control Unit (ECU) Power
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file View Data Sheet
Documentation View All Documentation
LTspice LT8582 Demo Circuit - 1.5MHz +5V to ±12V Dual Converter (5V to ±12V @ 550mA) Download 6.00KB LTspice LT8582 - Step-Up (Boost) Regulators Download 5.17 KB
Part Models 4
1ku List Price Starting From $4.48
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LT8582

Documentation

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Data Sheet

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UPDATED 01/12/2012
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LT8582: Dual 3A Boost/Inverting/SEPIC DC/DC Converter with Fault Protection Data Sheet

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UPDATED 03/15/2012
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LT8582: フォルト保護付き、デュアル3A 昇圧/反転/SEPIC DC/DC コンバータ データシート

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User Guide

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UPDATED 12/02/2011
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DC1734A - Demo Manual redirect icon

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Reliability Data

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UPDATED 03/26/2018
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R530 Reliability Data redirect icon

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Design Note

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UPDATED 09/01/2019
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Negative Linear Regulator Features 0.8 µV RMS Noise and 74 dB Power Supply Rejection Ratio at 1 MHz redirect icon

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UPDATED 09/26/2019
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负线性稳压器具有0.8 µV RMS噪声和74 dB电源抑制比（1 MHz时） redirect icon

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UPDATED 09/01/2019
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0.8μVのRMSノイズ、1MHzで74dBのPSRRを達成した負電圧リニア・レギュレータ redirect icon

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Documentation

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LT8582EDKD#PBF 24-Lead DFN (7mm x 4mm w/ EP) external-link
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LT8582EDKD#TRPBF 24-Lead DFN (7mm x 4mm w/ EP) external-link
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LT8582IDKD#PBF 24-Lead DFN (7mm x 4mm w/ EP) external-link
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LT8582IDKD#TRPBF 24-Lead DFN (7mm x 4mm w/ EP) external-link
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Software & Part Ecosystem

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Evaluation Kits 1

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DC1734A

LT8582IDKD Demo Board I Dual 3A Boost/Inverting/SEPIC DC/DC Converter

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DC1734A

LT8582IDKD Demo Board I Dual 3A Boost/Inverting/SEPIC DC/DC Converter

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DC1734A
LT8582IDKD Demo Board I Dual 3A Boost/Inverting/SEPIC DC/DC Converter
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Product Detail

Demonstration circuit 1734A features the dual channel LT8582 in boost and inverting regulator configurations. The circuit is designed to convert a 5V to 10V input source to 12V at 900mA and –12V at 590mA. To limit the temperature rise of the chip to 40°C, on the demo board with no air flow, the maximum combined output power is 15W. Additional input bulk capacitance may be needed, subject to source impedance. DC1734A is designed to survive output short circuit events.

Resources

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DC1734A - Schematic Download

46.00K

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ZIP

DC1734A - Design Files Download

836.00K

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PDF

DC1734A - Demo Manual Download

363.00K

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Evaluation Kits1

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DC1734A

LT8582IDKD Demo Board I Dual 3A Boost/Inverting/SEPIC DC/DC Converter

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.

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LT8582 Demo Circuit - 1.5MHz +5V to ±12V Dual Converter (5V to ±12V @ 550mA) Download

6.00K

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LT8582 - Step-Up (Boost) Regulators Download

5.17 K

Reference Designs 1

Figure 1. CN0554 Simplified Block Diagram

CN0554

±10 V Analog Input and ±15 V Analog Output for Raspberry Pi Platforms

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CN0554

±10 V Analog Input and ±15 V Analog Output for Raspberry Pi Platforms

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CN0554

Circuits from the lab

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±10 V Analog Input and ±15 V Analog Output for Raspberry Pi Platforms

Features and Benefits

  • 8-Psuedo differential inputs or 16-Single-ended inputs
  • Selectable Input Voltage range, up to ±13 V
  • 16 Single-ended Outputs
  • Up to ±15 V Outputs
  • All Power Rails Derived from the Raspberry Pi
View Detailed Reference Design external link

Part Used 8

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LTC2688 reference design link

Resources

URL

AD7124 IIO Sigma-Delta ADC GitHub Linux Driver Source Code link icon

WIKI

LTC2688 Linux Device Driver link icon

WIKI

LTC2688 No-OS Device Driver link icon

URL

AD7124 GitHub no-OS Driver Source Code link icon

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Design & Integration Tools

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ZIP

CN0554 Design Files link icon

3.71 M

Videos

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2023-02-17

01:00

CN0554: 10V Analog Input and 15V Analog Output for Raspberry Pi

Reference Designs1

Figure 1. CN0554 Simplified Block Diagram

CN0554

±10 V Analog Input and ±15 V Analog Output for Raspberry Pi Platforms

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