data brief for further information contact your local stmicroelectronics sales office. november 2007 rev 1 1/4 4 STEVAL-ILL006V1 viper22a-e off line, constant curre nt driver for high intensity leds features drives from 2 to 8 leds constant current output: 350 ma, 700 ma, 1.05 a (selectable) input voltage range: 90 to 264 vac 50/60 hz compliant with en55022 class b for emi description this board represents a low cost, high efficiency, high brightness multiple led driver based on the integrated off-line switching regulator viper22a-e. the board is an off-line, constant current power supply capable of driving from 2 to 8 leds in series operating from universal mains input. the output current can be selected for compatibility with 1 w, 3 w and 5 w leds with a total output power of up to 10 w. STEVAL-ILL006V1 www.st.com
board schematic STEVAL-ILL006V1 2/4 1 board schematic figure 1. schematic 1 2 w1 0 c8 0.1uf df06mgi 600v,1a 1kv 50v 21t 51t 180t 1 2 r10 1k r8 10 5% 1/4w 1 2 r11 1k r3 6.2k 5% 1/4w r2 100 5% 1/2w r1 6.8 5% 1w drain 8 drain 6 drain 7 drain 5 source 1 tov l 2 fb 3 vdd 4 u4 viper1 2a + c1 4.7uf 400v + c2 10uf 400v + c7 220uf 25v + c4 22uf 50v c6 0.33uf c3 47pf c5 4.7nf 1 2 4 3 u3 out1 1 ve1- 2 vref 3 gnd 4 ve2+ 5 ve2- 6 out2 7 vcc 8 u2 tsm103 1 2 j1 f1 fuse 1 2 3 4 5 6 7 8 9 10 11 12 j4 1 2 r14 0.5 1/2w r5 750 1 2 r9 2.2k 1/2w c11 0.047uf 8 8 10 10 5 5 6 6 1 1 2 2 cramer cvp11-047 1 2 r12 0.5 1/2w 1 2 j2 jumper 1 2 j3 jumper r15 24k 1/4w 4 3 2 1 d1 1 2 4 3 . . compostar45mh l1 0 r7 10k a k d2 stth102 c10 poly cap 0 led- led+ a k d3 stth152 r16 2.2k 1/4w 1 2 r13 0.5 1/2w r4 100 5% 1/4w
STEVAL-ILL006V1 revision history 3/4 2 revision history table 1. document revision history date revision changes 13-nov-2007 1 initial release
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