Features Temperature Regulation: The module uses a temperature regulation function that allows the LED to be continuously lit in case of high ambient temperature or high voltage drop. Constant Current Module: This module is a regulation IC with an input voltage of DC 2.8 to 6V and can be set for constant output current. Overcurrent Protection: When the LED current approaches 1.9A, the overcurrent protection block starts to work to prevent the LED current from increasing further. 2 Adjustment Methods: Users can adjust the current of the constant current module by adjustable resistor or PWM signal control. Ideal Choice: The module's power transistor and current detection block can greatly reduce external component counts and is ideal for LED drivers. Specification: Item Type: Constant Current Adjustable Module Material: PCB Color: Green Operating Voltage: DC 2.8-6V (for 3V 3.3V 3.7V 4.5V 6V LED driver) Output Current: 30-1500MA Large Output Power: 9W, can drive 1-16 2.8-6V LEDs (high current no more than 1) Current Regulation: 1. through adjustable resistors 2. through PWM signal control Function: Chip temperature regulation, exceed LED current protection, working temperature range. Package List:10 x Constant Current Adjustable Module Package List 10 x Constant Current Adjustable Module