Texas InstrumentsLM2758TLEV

The LM2758 Evaluation board is for the LM2758, 700mA flash LED driver. The LM2758 is an integrated low-noise, high-current switched capacitor DC/DC converter with a regulated current source. The device is capable of driving loads up to 700mA from a single-cell 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

• Up to 700mA Output Current
• Ultra-Small Solution Size
   -No Inductor, Only 4 Capacitors 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
• The LM2758 is offered in National?s tiny 12-bump thin micro SMD package

• Camera Flash in Mobile Phones
• Flash for Digital Cameras
• Keypad LED Drive
• Audio amplifier power supply
• Low-current Camera Flash
• General Purpose Li-Ion-to-5V Conversion
• Cellular Phone SIM Card

AN-1695 LM2758 Flash LED Driver Evaluation Board (Rev. A)