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 (V_OUT) over an input supply range of 3.0V to 5.5V. The switched output, I_OUT, 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 I_OUT and V_OUT. This device uses only three small, low-cost ceramic capacitors.

LM2753 uses Pulse Frequency Modulation (PFM) regulation. Typical operating frequency is 725kHz. Under no-load conditions, LM2753 operates on only 60μA. If the output is connected to ground, the charge pump stays in the gain of 1 which helps limit the input current to 300mA (typ.)

LM2753 is available in a 10-pin No Pullback Leadless Leadframe Package: LLP-10.