Datasheet

ADP8860
Rev. 0 | Page 41 of 52
Sink Current Register LED7 (ISC7)—Register 0x14
Table 49. ISC7 Bit Map
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
SCR SCD7
Table 50. Bit Descriptions for the ISC7 Register
Bit Name Bit No. Description
SCR 7 1 = Sink Current 1.
0 = Sink Current 0. For the lowest input current consumption and optimal efficiency, set SCR to 0 when D7 is set
to ISC in Register 0x05 and SC7_EN = 0.
SCD7 6:0 For Sink Current 0, use the following DAC code schedule (see Table 28 for a complete list of values):
DAC Linear Law (mA) Square Law (mA)
0000000 0 0
0000001 0.236 0.002
0000010 0.472 0.007
0000011 0.709 0.017
… … …
1111111 30 30
For Sink Current 1, use the following DAC code schedule (see Table 51 for a complete list of values):
DAC
Linear Law (mA) Square Law (mA)
0000000 0 0
0000001 0.472 0.004
0000010 0.945 0.014
0000011 01.417 0.034
… … …
1111111 60 60
Table 51. Linear and Square Law Currents for LED7 (SCR = 1)
DAC Code Linear Law (mA) Square Law
1
(mA)
0x00 0.000 0
0x01 0.472 0.004
0x02 0.945 0.014
0x03 1.42 0.034
0x04 1.89 0.06
0x05 2.36 0.094
0x06 2.83 0.134
0x07 3.31 0.182
0x08 3.78 0.238
0x09 4.25 0.302
0x0A 4.72 0.372
0x0B 5.20 0.45
0x0C 5.67 0.536
0x0D 6.14 0.628
0x0E 6.61 0.73
0x0F 7.09 0.838
0x10 7.56 0.952
0x11 8.03 1.076
0x12 8.50 1.206
0x13 8.98 1.342
DAC Code Linear Law (mA) Square Law
1
(mA)
0x14 9.45 1.488
0x15 9.92 1.64
0x16 10.39 1.8
0x17 10.87 1.968
0x18 11.34 2.142
0x19 11.81 2.326
0x1A 12.28 2.514
0x1B 12.76 2.712
0x1C 13.23 2.916
0x1D 13.70 3.128
0x1E 14.17 3.348
0x1F 14.65 3.574
0x20 15.12 3.81
0x21 15.59 4.052
0x22 16.06 4.3
0x23 16.54 4.558
0x24 17.01 4.822
0x25 17.48 5.092
0x26 17.95 5.372
0x27 18.43 5.658