ADP8866 Analog Devices, ADP8866 Datasheet - Page 38

• Manufacturer Part Number: ADP8866
• Description: Charge Pump Driven 9-Channel LED Driver with Automated LED Lighting Effects
• Manufacturer: Analog Devices

Specifications of ADP8866

• Vin Range: 2.5 to 5.5V
• Vout (v): 4.3 to 5.5
• Synchronous: No
• Package: 20-Lead LFCSP
• Led Configuration: Parallel
• Topology: Capacitive
• I2c Support: Yes
• Max Iout (ma): 25mA
• Brightness Control: I2C
• Peak Efficiency (%): 92%
• Switching Frequency: 1MHz

ADP8866
Independent Sink 9 Off Timer (OFFTIMER9)—Register 0x21
Table 54. OFFTIMER9 Bit Map
Bit 7
Reserved
Table 55.
Bit Name
N/A
SC9OFF
1
2
3
Independent Sink Current Fade (ISCF)—Register 0x22
Table 56. ISCF Bit Map
Bit 7
Table 57.
Bit Name
SCFO
An independent sink remains on continuously when it is enabled and SCxOFF is 00 (disabled).
Setting SCxOFF to 0 seconds is not recommended if the SCFO fade-out time is also set to 0 seconds.
Setting SCxOFF to off causes the LED to be held off indefinitely. This is useful for setting up a blink sequence that runs once and then goes to off.
Bit No.
[7:4]
Bit 6
Bit No.
7
[6:0]
Bit 6
Description
Sink current fade-out time. Note that the fade time given is from full scale to zero (the actual full-scale value is
affected by the LEVEL_SET bits). Binary code fade-out times are as follows:
0000 = disabled.
0001 = 0.05 sec.
0010 = 0.10 sec.
0011 = 0.15 sec.
0100 = 0.20 sec.
0101 = 0.25 sec.
0110 = 0.30 sec.
0111 = 0.35 sec.
1000 = 0.40 sec.
1001 = 0.45 sec.
1010 = 0.50 sec.
1011 = 0.75 sec.
1100 = 1.00 sec.
1101 = 1.25 sec.
1110 = 1.50 sec.
1111 = 1.75 sec.
Description
Reserved.
SC9 off time. When the SC off time is disabled, the SC remains on while enabled. When the SC off time is set to
any other value, the ISC turns off for the off time (per the following listed times) and then turns on according to
the SCON setting.
0000 = disabled
0000001 = 0.0 sec
0000010 = 0.1 sec.
0000011 = 0.2 sec.
…
1111110 = 12.5 sec.
1111111 = off
SCFO
Bit 5
Bit 5
3
.
1
.
2
.
Bit 4
Bit 4
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Bit 3
Bit 3
SC9OFF
Bit 2
Bit 2
SCFI
Bit 1
Bit 1
Bit 0
Bit 0