LT3494
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LT3494

Micropower Low Noise Boost Converters with Output Disconnect

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LTspice LT3494 - Step-Up (Boost) Regulators Download 1.25 KB LTspice LT3494A Demo Circuit - µPower Low Noise Boost Converter (3.6V to 15V @ 27mA) Download 2.00KB LTspice LT3494 Demo Circuit - µPower Low Noise Boost Converter (3.6V to 15V @ 17mA) Download 1.00KB
Part Models 4
1ku List Price Starting From $1.77
Features
  • Low Quiescent Current
    • 65µA in Active Mode
    • 1µA in Shutdown Mode
  • Switching Frequency is Non-Audible Over Entire Load Range
  • Integrated Power NPN:
    • 350mA Current Limit (LT3494A)
    • 180mA Current Limit (LT3494)
  • Integrated Schottky Diode
  • Integrated Output Disconnect
  • Integrated Output Dimming
  • Wide Input Range: 2.3V to 16V
  • Wide Output Range: Up to 40V
  • Tiny 8-Lead 3mm × 2mm DFN Package
Additional Details
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The LT3494/LT3494A are low noise boost converters with integrated power switch, Schottky diode and output disconnect circuitry. The parts use a novel* control technique resulting in low output voltage ripple as well as high efficiency over a wide load current range. This technique guarantees that the switching frequency stays above the audio band for the entire load range. The parts feature a high performance NPN power switch with a 350mA and 180mA current limit for the LT3494A and LT3494 respectively. The quiescent current is a low 65µA, which is further reduced to less than 1µA in shutdown. The internal disconnect circuitry allows the output voltage to be isolated from the input during shutdown. An auxiliary reference input (CTRL pin) overrides the internal 1.225V feedback reference with any lower value allowing full control of the output voltage during operation. The LT3494/LT3494A are available in a tiny 8-lead 3mm × 2mm DFN package.

Applications

  • OLED Power
  • Low Noise Power
  • MP3 Players
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file View Data Sheet
Documentation View All Documentation
LTspice LT3494 - Step-Up (Boost) Regulators Download 1.25 KB LTspice LT3494A Demo Circuit - µPower Low Noise Boost Converter (3.6V to 15V @ 27mA) Download 2.00KB LTspice LT3494 Demo Circuit - µPower Low Noise Boost Converter (3.6V to 15V @ 17mA) Download 1.00KB
Part Models 4
1ku List Price Starting From $1.77
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LT3494

Documentation

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Data Sheet

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UPDATED 11/21/2007
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LT3494: Micropower Low Noise Boost Converters with Output Disconnect Data Sheet

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UPDATED 04/22/2010
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LT3494: 出力切断付きマイクロパワー低ノイズ昇圧コンバータ データシート

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User Guide

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UPDATED 09/24/2009
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DC1024A - 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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Technical Articles

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UPDATED 06/01/2009
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Space-Saving, Dual Output DC/DC Converter Yields Plus/Minus Voltage Outputs with (Optional) I2C Programming 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
LT3494AEDDB#TRMPBF 8-Lead DFN (3mm x 2mm w/ EP) external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
LT3494AEDDB#TRPBF 8-Lead DFN (3mm x 2mm w/ EP) external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
LT3494EDDB#TRMPBF 8-Lead DFN (3mm x 2mm w/ EP) external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
LT3494EDDB#TRPBF 8-Lead DFN (3mm x 2mm w/ EP) external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link

Software & Part Ecosystem

Parts Product Life Cycle Description

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Evaluation Kits 2

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DC1024A-A

LT3494EDDB Demo Board | 3V-4.2VIN, 15VOUT @ 32mA

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DC1024A-A

LT3494EDDB Demo Board | 3V-4.2VIN, 15VOUT @ 32mA

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DC1024A-A
LT3494EDDB Demo Board | 3V-4.2VIN, 15VOUT @ 32mA
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Product Detail

Demonstration circuits 1024A-A and 1024A-B are Micropower Low Noise Boost Converters With Output Disconnect featuring the LT3494 and LT3494A respectively. The demo circuits demonstrate small size and low component count in Boost configuration. Both demo versions are designed to convert a 3V-4.2V source to 15V. The only difference is in the load capability. The 1024A–A supplies 17mA at 3VIN while the 1024A–B supplies 27mA, also at 3VIN. The LT3494 features integrated Schottky diode, output disconnect function, dimming control, output sense resistor and non-audible switching frequency over the entire load range.

Resources

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PDF

DC1024A - Demo Manual Download

577.00K

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ZIP

DC1024A - Design File Download

665.00K

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PDF

DC1024A - Schematic Download

25.00K

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DC1024A-B

LT3494AEDDB Demo Board | 3V-4.2VIN, 15VOUT @ 44mA

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DC1024A-B

LT3494AEDDB Demo Board | 3V-4.2VIN, 15VOUT @ 44mA

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Print
DC1024A-B
LT3494AEDDB Demo Board | 3V-4.2VIN, 15VOUT @ 44mA
Buy Now View Details

Product Detail

Demonstration circuits 1024A-A and 1024A-B are Micropower Low Noise Boost Converters With Output Disconnect featuring the LT3494 and LT3494A respectively. The demo circuits demonstrate small size and low component count in Boost configuration. Both demo versions are designed to convert a 3V-4.2V source to 15V. The only difference is in the load capability. The 1024A–A supplies 17mA at 3VIN while the 1024A–B supplies 27mA, also at 3VIN. The LT3494 features integrated Schottky diode, output disconnect function, dimming control, output sense resistor and non-audible switching frequency over the entire load range.

Resources

pdf icon

PDF

DC1024A - Demo Manual Download

577.00K

pdf icon

ZIP

DC1024A - Design File Download

665.00K

pdf icon

PDF

DC1024A - Schematic Download

25.00K

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Evaluation Kits2

evaluation kit item images

DC1024A-A

LT3494EDDB Demo Board | 3V-4.2VIN, 15VOUT @ 32mA
evaluation kit item images

DC1024A-B

LT3494AEDDB Demo Board | 3V-4.2VIN, 15VOUT @ 44mA

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.

spice tool Lt Spice

LT3494 - Step-Up (Boost) Regulators Download

1.25 K

spice tool Lt Spice

LT3494A Demo Circuit - µPower Low Noise Boost Converter (3.6V to 15V @ 27mA) Download

2.00K

spice tool Lt Spice

LT3494 Demo Circuit - µPower Low Noise Boost Converter (3.6V to 15V @ 17mA) Download

1.00K

Reference Designs 1

Condition-Based Monitoring Signal Chain for an IEPE Piezoelectric Vibration Sensor

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CN0540

Circuits from the lab

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24-Bit Data Acquisition System for IEPE Sensors

Features and Benefits

  • IEPE compatible data acquisition system
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Resources

URL

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Design & Integration Tools

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ZIP

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Reference Designs1

Condition-Based Monitoring Signal Chain for an IEPE Piezoelectric Vibration Sensor

CN0540

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