pinbus / tlc5940_led_driver_board

TLC5940 LED Driver Board - Rev. 1.0

This is a board designed for a TLC5940 LED driver IC. Each of the TLC5940's outputs has a separate connector. It can be used with the 1206 LED Satellite Board.

The values of the parts listed in the BOM are chosen based on V_CC = +5V, V_O = +12V, and I_OLC = 30mA. If you want another value for I_OLC, change the value of resistor R1 using the formula given on page 17 of the datasheet.

When using another voltage for V_CC or when using another colour of LED, remember to change the value of R2. Whe using another voltage for V_O or using another colour of LED, remember to change the value of R3.

Warning: These designs are made as part of a hobby project and thus come with no guarantees. Do not use these designs in for any critical systems! Working with voltages higher than +40V can be potentially dangerous, please take appropriate safety measures!

BOM

Identifiers	Quantity	Part
C1	1x	100nF Ceramic capacitor, 5mm pin pitch
C2	1x	1μF Electrolytic capacitor, 2mm pin pitch, 5mm diameter
D1, D2	2x	3mm red LED
J0 - J15	16x	JST XH connector, 2.5mm pitch, 2-way, through-hole
J16	1x	Dupont male connector, 2.54mm pitch, 3-way, through-hole
	1x	Jumper (for the dupont connector)
J17, J18	2x	JST XH connector, 2.5mm pitch, 6-way, through-hole
J20	1x	CH 3.96 connector, 3-way, through hole
R1	1x	1.3KΩ 0.25W resistor
R2	1x	180Ω 0.25W resistor
R3	1x	560Ω 0.25W resistor
U1	1x	TLC5940NT LED driver IC
	1x	Optional: Socket for the TLC5940

Pictures