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LM2753 - High Power Switched Capacitor Voltage Convertor/Flash LED Driver

Description

The LM2753 is capable of driving a Flash LED with a pulsed current of 400mA at an input voltage of 3.6V.

A switched capacitor doubler, the LM2753 provides a regulated 5V output (VOUT) over an input supply range of 3.0V to 5.5V.

Features

  • n n n n n n n n n Input Voltage Range: 3.0V to 5.5V Regulated 5V Output 250mA Output Current with a 3.6V input 400mA Pulsed Output Current (up to 500ms duration) 60µA (typ. ) Quiescent Current PFM Regulation Inductor-less solution: requires only 3 small capacitors < 1µA Typical Shutdown Current 10-pin LLP Package (No Pullback): 3mm x 3mm x 0.75mm.

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LM2753 High Power Switched Capacitor Voltage Convertor/Flash LED Driver February 2005 LM2753 High Power Switched Capacitor Voltage Convertor/Flash www.datasheet4u.com LED Driver General Description The LM2753 is capable of driving a Flash LED with a pulsed current of 400mA at an input voltage of 3.6V. A switched capacitor doubler, the LM2753 provides a regulated 5V output (VOUT) over an input supply range of 3.0V to 5.5V. The switched output, IOUT, takes less than 10ns to turn on and provide maximum current to a Flash LED. Flash LED current is set via a ballast resistor. Continuous illumination current (Torch Mode) is programmed by connecting a resistor between IOUT and VOUT. This device uses only three small, low-cost ceramic capacitors.
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