LT3593
Info: : PRODUCTION
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LT3593

1MHz White LED Driver with Output Disconnect and One Pin Current Programming

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Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 4
1ku List Price Starting From $1.71
Features
  • Drives Up to Ten White LEDs from a 3V Supply
  • One Pin Shutdown and Current Programming
  • LEDs Disconnected in Shutdown
  • 32:1 Linear Brightness Control Range
  • VIN Range: 2.7V to 5.5V
  • ±5% Output Current Accuracy at Full Scale
  • Low Shutdown Current: 3μA
  • 1MHz Switching Frequency
  • Requires Only 1μF Output Capacitor
  • Low Profile 6-Lead DFN (2mm × 2mm × 0.75mm) and 6-Lead SOT-23 Packages
Additional Details
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The LT3593 is a step-up DC/DC converter designed to drive up to ten white LEDs in series from a Li-Ion cell. Series connection of the LEDs provides identical LED currents and eliminates the need for ballast resistors. The device features a unique high side LED current sense that enables the part to function as a “one wire current source” where the low side of the LED string can be returned to ground anywhere.

Additional features include output disconnect in shutdown, open LED protection and 1-pin shutdown/LED current control. The CTRL pin is toggled to adjust the LED current via an internal counter and a 5-bit DAC.

The LT3593 switches at 1MHz, allowing the use of tiny external components. Constant frequency switching results in low input noise and a small output capacitor. The LT3593 is available in the 6-lead DFN (2mm × 2mm) as well as the 6-lead SOT-23 packages.

Applications

  • Cell Phones
  • Digital Cameras
  • PDAs, Handheld Computers
  • MP3 Players
  • GPS Receivers
Part Models 4
1ku List Price Starting From $1.71

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LT3593EDC#TRMPBF
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LT3593EDC#TRPBF
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LT3593ES6#TRMPBF
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LT3593ES6#TRPBF
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