georges80
Flashlight Enthusiast
1W Driver (step down converter) ($15 ea, in stock):
- Constant current regulator. 350mA current limit, set by a single resistor (max 500mA).
- Can drive either a single 1W Luxeon (min 4V input) or two series connected 1W Luxeons (min of 8V input).
- Operates from 4V to 35V. Draws about 120mA from 12.8V to drive a single 1W Luxeon, draws about 200mA from 12.8V to drive two series connected 1W Luxeons.
-Protected against reverse polarity connection and output short circuit.
-Regulator requires about 1V over the diode Vf to maintain regulation, current drops when out of regulation.
-Board is 1" x 7/8"
5W Driver (step down converter) ($18 ea, limited stock, making more):
- Constant current regulator. 700mA current limit, set by a single resistor (max 1000mA).
- Can drive a single 5W Luxeon (or 2 series connected 3W Luxeons).
- Operates from 8V to 35V.
- Protected against reverse polarity connection and output short circuit.
- Regulator requires about 1V over the diode Vf to maintain regulation, current drops when out of regulation.
- Board is 1" x 7/8"
Ordering info etc: www.geocities.com/george_tlc/led.html
The driver board - there is a difference between the 1W and 5W drivers: the switching regulator IC (500mA and 1000mA versions) and a resistor value.
george.
- Constant current regulator. 350mA current limit, set by a single resistor (max 500mA).
- Can drive either a single 1W Luxeon (min 4V input) or two series connected 1W Luxeons (min of 8V input).
- Operates from 4V to 35V. Draws about 120mA from 12.8V to drive a single 1W Luxeon, draws about 200mA from 12.8V to drive two series connected 1W Luxeons.
-Protected against reverse polarity connection and output short circuit.
-Regulator requires about 1V over the diode Vf to maintain regulation, current drops when out of regulation.
-Board is 1" x 7/8"
5W Driver (step down converter) ($18 ea, limited stock, making more):
- Constant current regulator. 700mA current limit, set by a single resistor (max 1000mA).
- Can drive a single 5W Luxeon (or 2 series connected 3W Luxeons).
- Operates from 8V to 35V.
- Protected against reverse polarity connection and output short circuit.
- Regulator requires about 1V over the diode Vf to maintain regulation, current drops when out of regulation.
- Board is 1" x 7/8"
Ordering info etc: www.geocities.com/george_tlc/led.html
The driver board - there is a difference between the 1W and 5W drivers: the switching regulator IC (500mA and 1000mA versions) and a resistor value.
george.
