ADP8860 Analog Devices, ADP8860 Datasheet - Page 41

• Manufacturer Part Number: ADP8860
• Description: Charge Pump, 7-Channel Smart LED Driver with I2C Interface
• Manufacturer: Analog Devices

Specifications of ADP8860

• Vin Range: 2.4V to 5.5V
• Vout (v): 4.3 to 5.5
• Synchronous: No
• Package: 20-Lead WLCSP
• Led Configuration: Parallel
• Topology: Capacitive
• I2c Support: Yes
• Max Iout (ma): 60mA
• Brightness Control: I2C
• Peak Efficiency (%): 89%
• Switching Frequency: 1MHz

Sink Current Register LED7 (ISC7)—Register 0x14
Table 49. ISC7 Bit Map
Bit 7
SCR
Table 50. Bit Descriptions for the ISC7 Register
Bit Name
SCR
SCD7
Table 51. 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
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
Bit 6
Bit No.
7
6:0
1 = Sink Current 1.
For Sink Current 0, use the following DAC code schedule (see Table 28 for a complete list of values):
Description
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.
DAC
0000000
0000001
0000010
0000011
…
1111111
For Sink Current 1, use the following DAC code schedule (see Table 51 for a complete list of values):
DAC
0000000
0000001
0000010
0000011
…
1111111
Bit 5
Square Law
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
Linear Law (mA)
0
0.236
0.472
0.709
…
30
Linear Law (mA)
0
0.472
0.945
01.417
…
60
Bit 4
1
(mA)
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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
0x14
0x15
0x16
0x17
0x18
0x19
0x1A
0x1B
0x1C
0x1D
0x1E
0x1F
0x20
0x21
0x22
0x23
0x24
0x25
0x26
0x27
SCD7
Bit 2
Linear Law (mA)
9.45
9.92
10.39
10.87
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
Bit 1
Square Law
1.488
1.64
1.8
1.968
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
Bit 0
ADP8860
1
(mA)