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Documents LM3555
SNVS594G – DECEMBER 2008 – REVISED APRIL 2016 LM3555 Synchronous Boost Converter With 500-mA High-Side
LED Driver and Dual-Mode Control Interface
1 Features 3 Description The LM3555 is a 2-MHz fixed-frequency, currentmode synchronous boost converter designed to drive
either a single flash LED at 500 mA or two series
flash LEDs at 400 mA. A high-voltage current source
allows the LEDs to be terminated to the GND plane
eliminating the need for an additional return trace
back to the device. 1 High-Voltage High-Side Current Source Allows for
Grounded Cathode LED Operation
Synchronous Boost Converter
Peak Converter Efficiency > 90%
Accurate and Programmable LED Current
Ranging From 60 mA to 500 mA
Adaptive LED Current Range Based on LED
Configuration
Dedicated Indicator Current Source
Dedicated Torch and Strobe Pins …
