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LTC3214
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LTC3214

  • Category:LED driver
  • Product Name:500mA camera LED charge pump
  • Manufacturers:LT
  • Production Batch Number:11+
  • Encapsulation:DFN
  • Stock Status:There is stock
  • Stock Quantity:20000
  • Minimum order quantity: 1
  • Details:Click here to find PDF information for the LTC3214
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  • Product introduction

LTC3214

500mA cameraLED charge pump

dot

  • Low noise constant frequency operation
  • High efficiency: up to 94%
  • Multi-mode operation: 1x, 1.5x, or 2x boost mode
  • Automatic mode switching
  • High output current: up to 500mA
  • Tiny application circuit (3mm x 3mm DFN package, all components are high.)
  • Automatic soft-start
  • The output is disconnected
  • Open, short-circuit LED protection
  • No inductors
  • Internal 110mΩ LED current sense resistor
  • 3mm x 3mm 10-pin DFN package

    description

    LTC®The 3214 is a low noise, high current charge pump DC/DC converter capable of driving high current LEDs from a 2.9V to 4.5V input up to 500mA. Low external component count (two jumper capacitors, one programming resistor, and at V.)INand two bypass capacitors on the CPO pin) make the LTC3214 ideal for small, battery-powered applications.

    A built-in soft-start circuit is used to prevent excessive inrush current during start-up. The high switching frequency allows the use of small external capacitors.

    The output current level is programmed using an external resistor. The LED current is regulated using an internal 110mΩ sense resistor. The automatic mode switching function optimizes efficiency by monitoring the voltage across the charge pump and switching modes only when a dropout voltage is detected. The device is available in a low profile 3mm × 3mm 10-pin DFN package.

    apply

    • LED flashlight/camera lamp power supply for cell phones, PDAs, and digital cameras
    • General lighting and/or flash/strobe observer applications
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