LT8570
Info : RECOMMENDED FOR NEW DESIGNS
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LT8570

Boost/SEPIC/Inverting DC/DC Converter with 65V Switch, Soft-Start and Synchronization

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Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 24
1ku List Price Starting From $2.72
Features
  • 65V Power Switch
  • Current Limit Options of 0.5A (LT8570) or 0.25A (LT8570-1)
  • 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: 2.55V to 40V
  • Low VCESAT Switch
  • Integrated Soft-Start Function
  • Easily Configurable as a Boost, SEPIC, or Inverting Converter
  • User Configurable Undervoltage Lockout (UVLO)
  • Pin Compatible with LT3580 and LT8580
  • Tiny Thermally Enhanced 8-Lead 3mm × 3mm DFN and 8-Lead MSOP Packages
Additional Details
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The LT8570 and LT8570-1 are PWM DC/DC converters. The LT8570 contains a 0.5A, 65V power switch, while the LT8570-1 contains a 0.25A, 65V power switch. The LT8570 and LT8570-1 can be configured as either a boost, SEPIC or inverting converter.

The LT8570/LT8570-1 have an adjustable oscillator, set by a resistor from the RT pin to ground. Additionally, the LT8570/LT8570-1 can be synchronized to an external clock. The switching frequency of the part may be free running or synchronized, and can be set between 200kHz and 1.5MHz.

The LT8570/LT8570-1 also feature innovative SHDN pin circuitry that allows for slowly varying input signals and an adjustable undervoltage lockout function.

Additional features such as frequency foldback and softstart are integrated. The LT8570/LT8570-1 are available in tiny thermally enhanced 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 24
1ku List Price Starting From $2.72

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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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Feb 3, 2020

- 20_0128

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

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

LT8570EMS8E#PBF

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LT8570EMS8E#TRPBF

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LT8570EMS8E-1#TRPBF

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Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 2

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DC2297A-A

LT8570EDD Demo Board | Boost, 65V Power Switch, 5V ≤ VIN ≤ 10V, VOUT = 12V @ 125mA

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DC2297A-A

LT8570EDD Demo Board | Boost, 65V Power Switch, 5V ≤ VIN ≤ 10V, VOUT = 12V @ 125mA

LT8570EDD Demo Board | Boost, 65V Power Switch, 5V ≤ VIN ≤ 10V, VOUT = 12V @ 125mA

Product Detail

Demonstration circuits 2297A-A and 2297A-B feature the LT8570 and LT8570-1 in a boost configuration. These demo circuits demonstrate small size and low component count. Both converters are designed to convert a 5V to 10V source to 12V. Refer to the manual for maximum load current at different input voltage levels.

reference details image

DC2297A-B

LT8570EDD-1 Demo Board | Boost, 5V ≤ VIN ≤ 10V, VOUT = 12V @ 60mA

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DC2297A-B

LT8570EDD-1 Demo Board | Boost, 5V ≤ VIN ≤ 10V, VOUT = 12V @ 60mA

LT8570EDD-1 Demo Board | Boost, 5V ≤ VIN ≤ 10V, VOUT = 12V @ 60mA

Product Detail

Demonstration circuits 2297A-A and 2297A-B feature the LT8570 and LT8570-1 in a boost configuration. These demo circuits demonstrate small size and low component count. Both converters are designed to convert a 5V to 10V source to 12V. The DC2297A-A (LT8570) provides 125mA of output current, and the DC2297A-B (LT8570-1) provides 60mA of output current. 

Tools & Simulations

Tools & Simulations 2

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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