LM3555
Overview
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
- Dual Mode Control (General Purpose or I2C)
- Broken Inductor Detection
- Output Overvoltage Protection
