LT8570

RECOMMENDED FOR NEW DESIGNS

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

Data Sheet Product Selection Table
Part Models
24
1ku List Price
Starting From $2.72
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Part Details

  • 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
LT8570
Boost/SEPIC/Inverting DC/DC Converter with 65V Switch, Soft-Start and Synchronization
1.5MHz, 5V to 12V Boost Converter Efficiency and Power Loss Product Package 1 Product Package 2
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Documentation

Data Sheet 1

Reliability Data 1

User Guide 1

Technical Articles 2

Data Sheet

This is the most up-to-date revision of the Data Sheet.

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Hardware Ecosystem

Parts Product Life Cycle Description
SEPIC Regulators 2
LT8580
RECOMMENDED FOR NEW DESIGNS Boost/SEPIC/Inverting DC/DC Converter with 1A, 65V Switch, Soft-Start and Synchronization
LT3580
PRODUCTION Boost/Inverting DC/DC Converter with 2A Switch, Soft-Start, and Synchronization
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Tools & Simulations

LTspice 3

Models for the following parts are available in LTspice:

  • LT8570
  • LT8570-1

LTpowerCAD 1

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.

LTpowerCAD

LTpowerCAD® is a power supply design program which selects power stage components, provides detailed power efficiency, shows quick loop Bode plot stability and load transient analysis, and can export to LTspice for simulation.

Evaluation Kits

eval board
schematic 1
schematic 2
schematic 3
schematic 4
DC2297A-A

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

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Product Details

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.

eval board
schematic 5
schematic 6
schematic 7
schematic 8
DC2297A-B

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

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Product Details

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. 
DC2297A-A
LT8570EDD Demo Board | Boost, 65V Power Switch, 5V ≤ VIN ≤ 10V, VOUT = 12V @ 125mA
DC2297A-A DC2297A-A DC2297A-A DC2297A - Schematic
DC2297A-B
LT8570EDD-1 Demo Board | Boost, 5V ≤ VIN ≤ 10V, VOUT = 12V @ 60mA
DC2297A-A DC2297A-A DC2297A-A DC2297A - Schematic

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