The Envistia 20mA LED Driver Module is a simple LED power supply module (constant current regulator, or CCR) that solves the problem of powering your LEDs and eliminates the current-limiting resistors. When a voltage up to 45V DC is applied it actively adjusts its own resistance to allow 20mA (+/- 2mA) to pass through. This makes it a perfect replacement for current-limiting resistors in LED circuits, and eliminates the need to calculate current-limiting resistor values or worry about a varying voltage source. It is perfect for 12V automotive applications because it ensures that your LED is continuously powered with a regulated 20mA regardless of battery voltage spikes, sags and fluctuations.
The module operates with a DC input voltage of 2V to 45V. It requires ~2V overhead voltage to operate, therefore the minimum voltage is 2V + your LED voltage. For example, if you are driving a single LED with a forward voltage of 3V, the minimum voltage required is 5V (3V + 2V).
The LED driver module can be placed anywhere in the LED circuit, with the module's anode (the tail end of the arrow silkscreened onto the board) toward the +V power supply, and the module's cathode (arrow end) toward the ground/-V. The board has 0.032" solder holes which can accommodate wire down to 22AWG or standard 0.1" header pins. The pin-to-pin spacing is 0.4 inches, designed to fit standard proto board hole spacing.
The modules are provided on a scored circuit board that can easily be broken apart. Two 0.1" header pins are included with each module.
CCR LED Driver Module Specifications
Input Voltage (Vak): 2V to 45V
Recommended Maximum Input Voltage: 20V *
Voltage Overhead: 1.8V
Output Current: 20mA +/-2mA
Module Dimensions (Excluding Pins): 0.62" L x 0.22" W x 0.11" H (15.75mm x 5.6mm x 2.8mm)
Pin-to-pin spacing: 0.4" (10.16mm)
Operating & Storage Junction Temperature Range: -55C to +150C
Package Includes
1, 2, 5 or 10 driver modules, quantity chosen at checkout 2X (2 pieces) 0.1" headers pins per driver
