ADP8861 Analog Devices, ADP8861 Datasheet - Page 21
ADP8861
Manufacturer Part Number
ADP8861
Description
Charge Pump, 7-Channel Smart LED Driver with I2C Interface
Manufacturer
Analog Devices
Datasheet
1.ADP8861.pdf
(40 pages)
Specifications of ADP8861
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
PWM
Peak Efficiency (%)
89%
Switching Frequency
1.32MHz
Over Volt Protection (v)
5.8V
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ADP8861ACPZ-R7
Manufacturer:
ADI/亚德诺
Quantity:
20 000
I
The ADP8861 provides full software programmability to facilitate
its adoption in various product architectures. The default I
address is 0101010x (x = 0 during write, x = 1 during read). There-
fore, the default write address is 0x54 and the read address is 0x55.
Note the following general behavior of registers:
•
•
•
2
C PROGRAMMING AND DIGITAL CONTROL
All registers are set to their default values during reset or
after a UVLO event.
All registers are read/write unless otherwise specified.
Unused bits are read as zero.
ST
SLAVE TO MASTER
MASTER TO SLAVE
B7
0
ST
1
OPERATION
SLAVE TO MASTER
MASTER TO SLAVE
FOR WRITE
DEVICE ID
0
B7
0
1
1
0
OPERATION
FOR WRITE
0
DEVICE ID
1
1
0
R/W
B0
0
ACK
1
SELECT REGISTER TO WRITE
B7
0
REGISTER ADDRESS
R/W
B0
ACK
B7
Figure 43. I
Figure 42. I
SELECT REGISTER TO WRITE
REGISTER ADDRESS
2
B0
C
Rev. A | Page 21 of 40
2
2
ACK
C Write Command Sequence
C Read Command Sequence
RS 0
B7
1
Table 7 through Table 55 provide register and bit descriptions.
The reset value for all bits in the bit map tables is all 0s, except
in Table 9 (see Table 9 for its unique reset value). Wherever the
acronym N/A appears in the tables, it means not applicable.
OPERATION
FOR READ
DEVICE ID
0
B0
1
ACK
0
1
B7
0
8-BIT VALUE TO WRITE IN THE
R/W
B0
ADDRESSED REGISTER
REGISTER VALUE
ACK
8-BIT VALUE TO WRITE IN THE
B7
ADDRESSED REGISTER
REGISTER VALUE
B0
ACK
B0
ST
ACK
ADP8861
ST