CAT3626_08 Datasheet, PDF (10/15 Pages) Catalyst Semiconductor – 6-Channel LED Driver with I2C™ Interface

CAT3626
Table 1. Register address and data configuration⁽¹⁾
Register
name
RegA
RegB
RegC
Register
Address
0
1
2
Bit 7
X
X
X
Bit 6
X
X
X
Bit 5
LEDC2
Bit pattern
Bit 4
Bit 3
Bit 2
See Table 2 for values
LEDC1 LEDB2 LEDB1
Bit 1
LEDA2
Bit 0
LEDA1
RegEn
3
X
X
On = 1
On = 1 On = 1 On = 1 On = 1 On = 1
Off = 0 Off = 0 Off = 0 Off = 0 Off = 0 Off = 0
The table 2 lists the various LED currents with the associated RegA, RegB, and RegC register values.
Table 2. LED Current Selection and Register Value⁽¹⁾
LED
current
(mA)
D7
D6
D5 D4 D3 D2 D1 D0
Dec
0.5 X X 0 0 0 0 0 0 0
1.0 X X 0 0 0 0 0 1 1
1.5 X X 0 0 0 0 1 0 2
2.0 X X 0 0 0 0 1 1 3
2.5 X X 0 0 0 1 0 0 4
3.0 X X 0 0 0 1 0 1 5
3.5 X X 0 0 0 1 1 0 6
4.0 X X 0 0 0 1 1 1 7
4.5 X X 0 0 1 0 0 0 8
5.0 X X 0 0 1 0 0 1 9
5.5 X X 0 0 1 0 1 0 10
6.0 X X 0 0 1 0 1 1 11
6.5 X X 0 0 1 1 0 0 12
7.0 X X 0 0 1 1 0 1 13
7.5 X X 0 0 1 1 1 0 14
8.0 X X 0 0 1 1 1 1 15
8.5 X X 0 1 0 0 0 0 16
9.0 X X 0 1 0 0 0 1 17
9.5 X X 0 1 0 0 1 0 18
10.0 X X 0 1 0 0 1 1 19
10.5 X X 0 1 0 1 0 0 20
11.0 X X 0 1 0 1 0 1 21
11.5 X X 0 1 0 1 1 0 22
12.0 X X 0 1 0 1 1 1 23
12.5 X X 0 1 1 0 0 0 24
13.0 X X 0 1 1 0 0 1 25
13.5 X X 0 1 1 0 1 0 26
14.0 X X 0 1 1 0 1 1 27
14.5 X X 0 1 1 1 0 0 28
15.0 X X 0 1 1 1 0 1 29
15.5 X X 0 1 1 1 1 0 30
16.0 X X 0 1 1 1 1 1 31
LED
current
(mA)
D7
D6 D5
D4
D3
D2
D1
D0 Dec
16.5 X X 1 0 0 0 0 0 32
17.0 X X 1 0 0 0 0 1 33
17.5 X X 1 0 0 0 1 0 34
18.0 X X 1 0 0 0 1 1 35
18.5 X X 1 0 0 1 0 0 36
19.0 X X 1 0 0 1 0 1 37
19.5 X X 1 0 0 1 1 0 38
20.0 X X 1 0 0 1 1 1 39
20.5 X X 1 0 1 0 0 0 40
21.0 X X 1 0 1 0 0 1 41
21.5 X X 1 0 1 0 1 0 42
22.0 X X 1 0 1 0 1 1 43
22.5 X X 1 0 1 1 0 0 44
23.0 X X 1 0 1 1 0 1 45
23.5 X X 1 0 1 1 1 0 46
24.0 X X 1 0 1 1 1 1 47
24.5 X X 1 1 0 0 0 0 48
25.0 X X 1 1 0 0 0 1 49
25.5 X X 1 1 0 0 1 0 50
26.0 X X 1 1 0 0 1 1 51
26.5 X X 1 1 0 1 0 0 52
27.0 X X 1 1 0 1 0 1 53
27.5 X X 1 1 0 1 1 0 54
28.0 X X 1 1 0 1 1 1 55
28.5 X X 1 1 1 0 0 0 56
29.0 X X 1 1 1 0 0 1 57
29.5 X X 1 1 1 0 1 0 58
30.0 X X 1 1 1 0 1 1 59
30.5 X X 1 1 1 1 0 0 60
31.0 X X 1 1 1 1 0 1 61
31.5 X X 1 1 1 1 1 0 62
32.0 X X 1 1 1 1 1 1 63
Notes:
(1) X = not used
1 = logic high
0 = logic low
Doc. No. MD-5014 Rev. D
10
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Characteristics subject to change without notice