LT3467
Info: : PRODUCTION
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LT3467

1.1A Step-Up DC/DC Converter with Integrated Soft-Start

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Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 8
1ku List Price Starting From $2.37
Features
  • 1.3MHz Switching Frequency (LT3467)
  • 2.1MHz Switching Frequency (LT3467A)
  • Low VCESAT Switch: 330mV at 1.1A
  • High Output Voltage: Up to 40V
  • Wide Input Range: 2.4V to 16V
  • Dedicated Soft-Start Pin
  • 5V at 540mA from 3.3V Input (LT3467)
  • 5V at 430mA from 3.3V Input (LT3467A)
  • 12V at 270mA from 5V Input (LT3467)
  • 12V at 260mA from 5V Input (LT3467A)
  • Uses Small Surface Mount Components
  • Low Shutdown Current: <1μA
  • Pin-for-Pin Compatible with the LT1930 and LT1613
  • Low Profile (1mm) ThinSOT Package
  • Low Profile (0.75mm) 8-Lead (3mm × 2mm) DFN Package
  • AEC-Q100 Qualified for Automotive Applications
Additional Details
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The LT3467/LT3467A switching regulators combine a 42V, 1.1A switch with a soft-start function. Pin compatible with the LT1930, its low VCESAT bipolar switch enables the device to deliver high current outputs in a small footprint. The LT3467 switches at 1.3MHz, allowing the use of tiny, low cost and low height inductors and capacitors. The LT3467A switches at 2.1MHz, allowing the use of even smaller components. High inrush current at start-up is eliminated using the programmable soft-start function. A single external capacitor sets the current ramp rate. A constant frequency current mode PWM architecture results in low, predictable output noise that is easy to filter.

The high voltage switch on the LT3467/LT3467A is rated at 42V, making the devices ideal for boost converters up to 40V as well as SEPIC and flyback designs. The LT3467 can generate 5V at up to 540mA from a 3.3V supply or 5V at 450mA from four alkaline cells in a SEPIC design. The LT3467A can generate 5V at up to 430mA from a 3.3V supply or 15V at 135mA from a 3.3V supply. The LT3467/LT3467A are available in a low profile (1mm) 6-lead SOT-23 package and tiny 3mm × 2mm DFN package.

  Switching Frequency
LT3467 1.3MHz
LT3467A 2.1MHz

APPLICATIONS

  • Digital Cameras
  • White LED Power Supplies
  • Cellular Phones
  • Medical Diagnostic Equipment
  • Local 5V or 12V Supplies
  • TFT-LCD Bias Supplies
  • xDSL Power Supplies
Part Models 8
1ku List Price Starting From $2.37

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LT3467EDDB#TRMPBF
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LT3467EDDB#TRPBF
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LT3467ES6#TRMPBF
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LT3467ES6#TRPBF
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LT3467IDDB#TRMPBF
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LT3467IDDB#TRPBF
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LT3467IS6#TRMPBF
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LT3467IS6#TRPBF
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Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

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DC647A

LT3467ES6 | 1.2MHz, SOT-23 DC/DC Converter, 2 Circuits; Boost and SEPIC

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DC647A

LT3467ES6 | 1.2MHz, SOT-23 DC/DC Converter, 2 Circuits; Boost and SEPIC

LT3467ES6 | 1.2MHz, SOT-23 DC/DC Converter, 2 Circuits; Boost and SEPIC

Product Detail

Demonstration circuit 647 is a 1.2MHz, SOT-23 DC/DC Converter featuring the LT3467. The demo board demonstrates two separate DC/DC converters for different application needs. The Boost Circuit is designed to convert a 5V input to 12V output at 300mA maximum load. The SEPIC Circuit generates a constant 12V/300mA output with 10V~16V variable input. Both circuits are designed to demonstrate the soft start feature, advantages of the 1.2MHz switching frequency, the internal 42V/1.1A switch, wide input voltage range and small circuit size.

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.

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