Datasheet

www.ti.com LM3561 Register Descriptions
Table 6. Flash Brightness Register Bit Settings
Bits [7:4] Bits [3:0]
Not Used Flash Current Settings
N/A 0000 = 36 mA
0001 = 73.6 mA
0010 = 111.2 mA
0011 = 148.8 mA
0100 = 186.4 mA
0101 = 224 mA
0110 = 261.6 mA
0111 = 299.2 mA
1000 = 336.8 mA
1001 = 374.4 mA
1010 = 412 mA
1011 = 449.6 mA
1100 = 487.2 mA
1101 = 524.8 mA (default)
1110 = 562.4 mA
1111 = 600 mA
Table 7. Flash Timeout Duration Register Bit Settings
Bit [7:6] Bit 5 Bits [4:0]
Not Used Current Limit Select Flash Timeout Duration Settings
N/A 0 = 1A Peak Current Limit 00000 = 32 ms timeout
1 = 1.5A Peak Current Limit (default) 00001 = 64 ms timeout
00010 = 96 ms timeout
00011 = 128 ms timeout
00100 = 160 ms timeout
00101 = 192 ms timeout
00110 = 224 ms timeout
00111 = 256 ms timeout
01000 = 288 ms timeout
01001 = 320 ms timeout
01010 = 352 ms timeout
01011 = 384 ms timeout
01100 = 416 ms timeout
01101 = 448 ms timeout
01110 = 480 ms timeout
01111 = 512 ms timeout (default)
10000 = 544 ms timeout
10001 = 576 ms timeout
10010 = 608 ms timeout
10011 = 640 ms timeout
10100 = 672 ms timeout
10101 = 704 ms timeout
10110 = 736 ms timeout
10111 = 768 ms timeout
11000 = 800 ms timeout
11001 = 832 ms timeout
11010 = 864 ms timeout
11011 = 896 ms timeout
11100 = 928 ms timeout
11101 = 960 ms timeout
11110 = 992 ms timeout
11111 = 1024 ms timeout
7
SNOU103–MAY 2013 AN-2252 LM3561 Evaluation Kit
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