ADP8861 Analog Devices, ADP8861 Datasheet - Page 26
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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
ADP8861
BACKLIGHT REGISTER DESCRIPTIONS
Configuration Register (CFGR)—Register 0x04
Table 16. CFGR Bit Map
Bit 7
Table 17. Bit Descriptions for the CFGR Register
Bit Name
N/A
Law
FOVR
Backlight Sink Enable (BLSEN)—Register 0x05
Table 18. BLSEN Bit Map
Bit 7
Reserved
Table 19. Bit Descriptions for the BLSEN Register
Bit Name
N/A
D7EN
D6EN
D5EN
D4EN
D3EN
D2EN
D1EN
Bit No.
[7:3]
[2:1]
0
Description
Reserved
Backlight transfer law
00 = linear law DAC, linear time steps
01 = square law DAC, linear time steps
10 = square law DAC, nonlinear time steps (Cubic 10)
11 = square law DAC, nonlinear time steps (Cubic 11)
Backlight fade override
1 = the backlight fade override is enabled
0 = the backlight fade override is disabled
Bit No.
7
6
5
4
3
2
1
0
Bit 6
Bit 6
D7EN
Bit 5
D6EN
Description
Reserved
Diode 7 backlight sink enable
1 = selects LED7 as an independent sink
0 = connects LED7 sink to backlight enable (BL_EN)
Diode 6 backlight sink enable
1 = selects LED6 as an independent sink
0 = connects LED6 sink to backlight enable (BL_EN)
Diode 5 backlight sink enable
1 = selects LED5 as an independent sink
0 = connects LED5 sink to backlight enable (BL_EN)
Diode 4 backlight sink enable
1 = selects LED4 as an independent sink
0 = connects LED4 sink to backlight enable (BL_EN)
Diode 3 backlight sink enable
1 = selects LED3 as an independent sink
0 = connects LED3 sink to backlight enable (BL_EN)
Diode 2 backlight sink enable
1 = selects LED2 as an independent sink
0 = connects LED2 sink to backlight enable (BL_EN)
Diode 1 backlight sink enable
1 = selects LED1 as an independent sink
0 = connects LED1 sink to backlight enable (BL_EN)
Reserved
Bit 5
Bit 4
D5EN
Rev. A | Page 26 of 40
Bit 4
Bit 3
D4EN
Bit 3
Bit 2
D3EN
Bit 2
Law
Bit 1
D2EN
Bit 1
Bit 0
D1EN
Bit 0
FOVR