UM10501
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© NXP B.V. 2011. All rights reserved.
User manual
Rev. 2 — 16 November 2011
4 of 18
NXP Semiconductors
UM10501
SSL21083 reference board user manual
3. Connecting to the board
The board is optimized for a 230 V (AC, 50 Hz) mains supply. In addition to the mains
voltage optimization, the board is designed to work with multiple LEDs or an LED module
with a high forward voltage.
Mains connection of this reference board is different from other general evaluation/demo
boards. Connect the mains to the screw connector J6.
Remark:
The maximum rated voltage of the board is 280 V (limited by the value of
electrolytic capacitor C1) or 400 V (DC).
The anode of the LED load is connected to positive positions 1 to 3 of connector J5. The
cathode is connected to negative 4 to 6 of connector J5.
Use an LED string with a V
F
greater than 20 volt on this board. Under the expected
conditions, the output current is 96 mA. If the rated current of the LED does not meet this
specification, the current can be adjusted. See
for instructions.
(1) J6: connect the L of the AC mains supply.
(2) J6: connect the N of the AC mains supply.
(3) J5 (1 to 3): Positive anode positions.
(4) J5 (4 to 6): Negative cathode positions.
Fig 2.
Board connection diagram
aaa-000495
J5 (1 to 3)
J5 (4 to 6)
J6