ADP8863 Analog Devices, ADP8863 Datasheet - Page 40

• Manufacturer Part Number: ADP8863
• Description: Charge Pump, 7-Channel Fun Lighting LED Driver
• Manufacturer: Analog Devices

Specifications of ADP8863

• Vin Range: 2.5 to 5.5V
• Vout (v): 4.3 to 5.5
• Synchronous: No
• Package: 20-Lead LFCSP,20-Lead WLCSP
• Led Configuration: Parallel
• Topology: Capacitive
• I2c Support: Yes
• Max Iout (ma): 60mA
• Brightness Control: I2C
• Peak Efficiency (%): 89%
• Switching Frequency: 1.32MHz
• Over Volt Protection (v): 5V

ADP8863
Sink Current Register LED7 (ISC7)—Register 0x14
Table 50. ISC7 Bit Map
Bit 7
SCR
Table 51. Bit Descriptions for the ISC7 Register
Bit Name
SCR
SCD7
Table 52. Linear and Square Law Currents for LED7 (SCR = 1)
DAC Code
0x00
0x01
0x02
0x03
0x04
0x05
0x06
0x07
0x08
0x09
0x0A
0x0B
0x0C
0x0D
0x0E
0x0F
0x10
0x11
0x12
0x13
0x14
0x15
0x16
0x17
Linear Law (mA)
0.000
0.472
0.945
1.42
1.89
2.36
2.83
3.31
3.78
4.25
4.72
5.20
5.67
6.14
6.61
7.09
7.56
8.03
8.50
8.98
9.45
9.92
10.39
10.87
Bit 6
Bit No.
7
[6:0]
Description
1 = Sink Current 1.
0 = Sink Current 0.
For Sink Current 0, use the following DAC code schedule (see Table 29 for a complete list of values).
DAC
0000000
0000001
0000010
0000011
…
1111111
For Sink Current 1, use the following DAC code schedule (see Table 52 for a complete list of values).
DAC
0000000
0000001
0000010
0000011
…
1111111
Bit 5
Linear Law (mA)
0.000
0.236
0.472
0.709
…
30
Linear Law (mA)
0.000
0.472
0.945
1.42
…
60
Square Law (mA)
0
0.004
0.014
0.034
0.06
0.094
0.134
0.182
0.238
0.302
0.372
0.45
0.536
0.628
0.73
0.838
0.952
1.076
1.206
1.342
1.488
1.64
1.8
1.968
Bit 4
1
Rev. A | Page 40 of 52
Square Law (mA)
0
0.002
0.007
0.017
…
30
Square Law (mA)
0
0.004
0.014
0.034
…
60
Bit 3
DAC Code
0x18
0x19
0x1A
0x1B
0x1C
0x1D
0x1E
0x1F
0x20
0x21
0x22
0x23
0x24
0x25
0x26
0x27
0x28
0x29
0x2A
0x2B
0x2C
0x2D
0x2E
0x2F
SCD7
Bit 2
Linear Law (mA)
11.34
11.81
12.28
12.76
13.23
13.70
14.17
14.65
15.12
15.59
16.06
16.54
17.01
17.48
17.95
18.43
18.90
19.37
19.84
20.31
20.79
21.26
21.73
22.20
Bit 1
Square Law (mA)
2.142
2.326
2.514
2.712
2.916
3.128
3.348
3.574
3.81
4.052
4.3
4.558
4.822
5.092
5.372
5.658
5.952
6.254
6.562
6.878
7.202
7.534
7.872
8.218
Bit 0
1