ADP8866 Analog Devices, ADP8866 Datasheet - Page 47

• 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

Table 93.
Bit Name
N/A
SC9OFF_HB
1
2
3
Heartbeat On Time (ISCT_HB)—Register 0x35
Table 94. ISCTHB1 Bit Map
Bit 7
Table 95.
Bit Name
N/A
SCON_HB
Enable Delay Time for SC6 (DELAY6)—Register 0x3C
Table 96. DELAY6 Bit Map
Bit 7
Reserved
A disabled setting leaves the LED on. This is useful for setting up a blink sequence that runs once and then stays on.
Setting SCxOFF_HB to 0 seconds is not recommended if the SCFO_HB 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
[6:0]
Bit No.
[7:4]
[3:0]
Bit 6
Description
Reserved.
SC9 off time for the even numbered pulses when heartbeat mode for this channel is enabled. When the
SC9OFF_HB time is disabled, SC9 goes immediately from the even numbered on time to the odd numbered on
time. 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 SCON9_HB setting.
0000 = disabled
0000001 = 0.0 sec
0000010 = 0.1 sec.
0000011 = 0.2 sec.
…
1111110 = 12.5 sec.
1111111 = off
Bit 6
Reserved
Description
Reserved.
On time for D6 to D9 even numbered pulses, when heartbeat is enabled for those channels.
0000 = 0.00 sec.
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 = 0.55 sec.
1100 = 0.60 sec.
1101 = 0.65 sec.
1110 = 0.70 sec.
1111 = 0.75 sec.
Bit 5
3
.
1
.
Bit 5
2
.
Bit 4
Bit 4
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Bit 3
Bit 3
DELAY6
Bit 2
Bit 2
SCON_HB
Bit 1
Bit 1
Bit 0
ADP8866
Bit 0