ADP8861 Analog Devices, ADP8861 Datasheet - Page 26

• Manufacturer Part Number: ADP8861
• Description: Charge Pump, 7-Channel Smart LED Driver with I2C Interface
• Manufacturer: Analog Devices

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

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