FM2819 is a dedicated integrated circuit designed for LED mining lamps, using the most advanced control technology and wide voltage design scheme Enhanced durability of the IC, capable of controlling LED lights of 3W or below, with current limiting protection, over temperature protection, output short circuit protection, and anti battery reverse connection function.
The chip changes the current of the LED lamp by altering the size of the external resistor R1; Control by tapping the switch button: strong light → dark light → flash, and repeat this process; When long pressing the button, there is an SOS function.

Working voltage: 2.5V~4.5V
Working current:<1mA
Working temperature: ≤ 85 ℃
Maximum power consumption: 0.5uA
Current limiting protection function
Over temperature protection function
Output short circuit protection function
Anti battery reverse connection protection function
Packaging form: SOT23-6

Mainly used in high-power LED headlights and other lighting fixtures

FM2819 Typical application circuit diagram：


FM2819 Pin diagram and pin description：