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LM2758 - Switched Capacitor Flash LED Driver

General Description

LM2758 is an integrated low-noise, high-current switched capacitor DC/DC converter with a regulated current sink.

The device is capable of driving loads up to 700 mA from a singlecell Li-Ion battery.

Key Features

  • Up to 700 mA Output Current.
  • Ultra-Small Solution Size.
  • No Inductor, Only 4 Capacitors and a resistor Required.
  • 1.514 mm x 1.996 mm x 0.6 mm thin micro SMD package 90% Peak Efficiency Indicator, Torch and Flash Modes Time-Out Circuitry Limits Flash Duration to 814 msec. (typ. ) Adaptive 1x and 1.5x Gains for Maximum Efficiency True Shutdown Internal Soft-Start Eliminates Inrush Current.

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LM2758 Switched Capacitor Flash LED Driver Texas Instruments
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www.DataSheet.in LM2758 Switched Capacitor Flash LED Driver in micro SMD October 9, 2009 LM2758 Switched Capacitor Flash LED Driver in micro SMD General Description LM2758 is an integrated low-noise, high-current switched capacitor DC/DC converter with a regulated current sink. The device is capable of driving loads up to 700 mA from a singlecell Li-Ion battery. Maximum efficiency is achieved over the input voltage range by actively selecting the proper gain based on the LED forward voltage and current requirements. One external low-power resistor sets the desired current for Indicator, Torch and Flash modes. To protect the devices and the flash LED, internal Time-out circuitry turns off the LM2758 in case of a faulty prolonged Flash mode.