LT3580
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LT3580

Boost/Inverting DC/DC Converter with 2A Switch, Soft-Start, and Synchronization

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Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 12
1ku List Price Starting From $2.43
Features
  • 2A Internal Power Switch
  • Adjustable Switching Frequency
  • Single Feedback Resistor Sets VOUT
  • Synchronizable to External Clock
  • High Gain SHDN Pin Accepts Slowly Varying Input Signals
  • Wide Input Voltage Range: 2.5V to 32V
  • Low VCESAT Switch: 300mV at 1.5A (Typical)
  • Integrated Soft-Start Function
  • Easily Configurable as a Boost or Inverting Converter
  • User Configurable Undervoltage Lockout (UVLO)
  • Tiny 8-Lead 3mm × 3mm DFN and 8-Lead MSOP Packages
Additional Details
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The LT3580 is a PWM DC/DC converter containing an internal 2A, 42V switch. The LT3580 can be configured as either a boost, SEPIC or inverting converter. Capable of generating 12V at 550mA or –12V at 350mA from a 5V input, the LT3580 is ideal for many local power supply designs.

The LT3580 has an adjustable oscillator, set by a resistor from the RT pin to ground. Additionally, the LT3580 can be synchronized to an external clock. The free running or synchronized switching frequency range of the part can be set between 200kHz and 2.5MHz.

The LT3580 also features innovative SHDN pin circuitry that allows for slowly varying input signals and an adjustable undervoltage lockout function.

Additional features such as frequency foldback and soft-start are integrated. The LT3580 is available in tiny 3mm × 3mm 8-lead DFN and 8-lead MSOP packages.

Applications

  • VFD Bias Supplies
  • TFT-LCD Bias Supplies
  • GPS Receivers
  • DSL Modems
  • Local Power Supply
Part Models 12
1ku List Price Starting From $2.43

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
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Product Lifecycle

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Oct 11, 2022

- 22_0244

Epoxy Change from Henkel 8290 to 8290A for MSOP Package

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Jul 12, 2022

- 22_0157

UTAC Thai Limited (UTL) as Alternate Assembly Site for MSOP Packages [With Modification in BOM]

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Jun 21, 2022

- 22_0050

UTAC Thai Limited (UTL) as Alternate Assembly Site for MSOP Packages / Devices

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LT3580EMS8E#TRPBF

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LT3580IMS8E#PBF

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PRODUCTION

Feb 3, 2020

- 20_0128

Laser Top Mark for 8 Lead MSOP Packages Assembled in ADPG and UTAC

LT3580EMS8E#PBF

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LT3580HMS8E#PBF

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LT3580MPMS8E#TRPBF

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Filter by Model

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Part Models

Product Lifecycle

PCN

Oct 11, 2022

- 22_0244

arrow down

Epoxy Change from Henkel 8290 to 8290A for MSOP Package

LT3580EMS8E#PBF

PRODUCTION

LT3580EMS8E#TRPBF

PRODUCTION

LT3580HMS8E#PBF

PRODUCTION

LT3580HMS8E#TRPBF

PRODUCTION

LT3580IMS8E#PBF

PRODUCTION

LT3580IMS8E#TRPBF

PRODUCTION

LT3580MPMS8E#PBF

PRODUCTION

LT3580MPMS8E#TRPBF

PRODUCTION

Jul 12, 2022

- 22_0157

arrow down

UTAC Thai Limited (UTL) as Alternate Assembly Site for MSOP Packages [With Modification in BOM]

LT3580EMS8E#PBF

PRODUCTION

LT3580EMS8E#TRPBF

PRODUCTION

LT3580IMS8E#PBF

PRODUCTION

LT3580IMS8E#TRPBF

PRODUCTION

Jun 21, 2022

- 22_0050

arrow down

UTAC Thai Limited (UTL) as Alternate Assembly Site for MSOP Packages / Devices

LT3580EMS8E#PBF

PRODUCTION

LT3580EMS8E#TRPBF

PRODUCTION

LT3580IMS8E#PBF

PRODUCTION

LT3580IMS8E#TRPBF

PRODUCTION

Feb 3, 2020

- 20_0128

arrow down

Laser Top Mark for 8 Lead MSOP Packages Assembled in ADPG and UTAC

LT3580EMS8E#PBF

PRODUCTION

LT3580EMS8E#TRPBF

PRODUCTION

LT3580HMS8E#PBF

PRODUCTION

LT3580HMS8E#TRPBF

PRODUCTION

LT3580IMS8E#PBF

PRODUCTION

LT3580IMS8E#TRPBF

PRODUCTION

LT3580MPMS8E#PBF

PRODUCTION

LT3580MPMS8E#TRPBF

PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 2

reference details image

DC1144A-B

LT3580EDD Demo Board | 5V ≤ VIN ≤ 12, VOUT = -12V @ 350mA

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DC1144A-B

LT3580EDD Demo Board | 5V ≤ VIN ≤ 12, VOUT = -12V @ 350mA

LT3580EDD Demo Board | 5V ≤ VIN ≤ 12, VOUT = -12V @ 350mA

Product Detail

Demonstration circuits 1144A-A and 1144A-B feature the LT3580EDD in Boost and Inverting regulator configurations, respectively. The demo circuits demonstrate small size and low component count. The DC1144A-A is designed to convert a 3V to 10V source to 12V at 300mA, while the DC1144A-B inverter converts a 5V to 12V source to -12V at 350mA.


The LT3580 operates with inputs as high as 32V but in these demo boards the input is limited by the voltage rating of the input capacitors and the magnitude of the boost output. The DC1146A-B can easily be configured into a SEPIC converter.

reference details image

DC1144A-A

LT3580EDD Demo Board | 3V ≤ VIN ≤ 10V, VOUT = 12V @ 300mA

zoom

DC1144A-A

LT3580EDD Demo Board | 3V ≤ VIN ≤ 10V, VOUT = 12V @ 300mA

LT3580EDD Demo Board | 3V ≤ VIN ≤ 10V, VOUT = 12V @ 300mA

Product Detail

Demonstration circuits 1144A-A and 1144A-B feature the LT3580EDD in Boost and Inverting regulator configurations, respectively. The demo circuits demonstrate small size and low component count. The DC1144A-A is designed to convert a 3V to 10V source to 12V at 300mA, while the DC1144A-B inverter converts a 5V to 12V source to -12V at 350mA.


The LT3580 operates with inputs as high as 32V but in these demo boards the input is limited by the voltage rating of the input capacitors and the magnitude of the boost output. The DC1146A-B can easily be configured into a SEPIC converter.

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

DE-10 Nano Kit

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terasic-de10-nano-kit

terasic-de10-nano-kit

Circuits from the lab

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Features and Benefits

  • Analog Devices has worked closely with FPGA and processor manufacturers to develop verified power solutions that optimize cost, size and efficiency in high performance applications
  • Our reference designs are supported by an intuitive design tool set and IP
  • Our team can provide designs for quick prototypes that can speed time to market in the most complex applications
View Detailed Reference Design external link
DE0 Nano SoC Dev Platform - Top View

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terasic-de0-nano-soc-kit-atlas-soc-kit

terasic-de0-nano-soc-kit-atlas-soc-kit

Circuits from the lab

tooltip Info:Circuits from the lab

Features and Benefits

  • Analog Devices has worked closely with FPGA and processor manufacturers to develop verified power solutions that optimize cost, size and efficiency in high performance applications
  • Our reference designs are supported by an intuitive design tool set and IP
  • Our team can provide designs for quick prototypes that can speed time to market in the most complex applications
View Detailed Reference Design external link

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