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LED Flash-Protection Features

 

Modern LED camera flash drivers are feature-rich and power dense. Capable of delivering over 2 A of current to dual LEDs in packages as small as 1.69 mm × 1.31 mm, flash LED drivers require built-in safety and protection features to maintain long-term device and system health. Devices such as the LM3643, LM3644, LM3648, LM3646, LM3642, LM36010, and LM36011 all provide many specific protection mechanisms that not only help provide run-time diagnostics but help diagnose manufacturing specific faults associated with the surrounding passive components. This application note will dive into the different protection mechanisms found on LED flash drivers.