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SNVS353F – FEBRUARY 2005 – REVISED SEPTEMBER 2016 LM2753 High-Power Switched-Capacitor Voltage Converter and Flash LED Driver
1 Features 3 Description The LM2753 is capable of driving a flash LED with a
pulsed current of 400 mA at an input voltage of 3.6 V.
A switched-capacitor doubler, the LM2753 provides a
regulated 5-V output (VOUT) over an input supply
range of 3 V to 5.5 V. The switched output, IOUT,
takes less than 10 ns 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. 1 Input Voltage Range: 3 V to 5.5 V
Regulated 5-V Output
250-mA Output Current With a 3.6-V Input
400-mA Pulsed Output Current
(up to 500-ms Duration)
60-ВµA (Typical) Quiescent Current …
