ADP8863 Analog Devices, ADP8863 Datasheet - Page 46

• Manufacturer Part Number: ADP8863
• Description: Charge Pump, 7-Channel Fun Lighting LED Driver
• Manufacturer: Analog Devices

Specifications of ADP8863

• 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: I2C
• Peak Efficiency (%): 89%
• Switching Frequency: 1.32MHz
• Over Volt Protection (v): 5V

ADP8863
Comparator Level 3 Threshold (L3_TRP)—Register 0x1F
Table 73. L3_TRP Bit Map
Bit 7
Table 74. Bit Descriptions for the L3_TRP Register
Bit Name
L3_TRP
Comparator Level 3 Hysteresis (L3_HYS)—Register 0x20
Table 75. L3_HYS Bit Map
Bit 7
Table 76. Bit Descriptions for the L3_HYS Register
Bit Name
L3_HYS
First Phototransistor Register: Low Byte (PH1LEVL)—Register 0x21
Table 77. PH1LEVL Bit Map
Bit 7
Table 78. Bit Descriptions for the PH1LEVL Register
Bit Name
PH1LEV_LOW
Bit 6
Bit 6
Bit 6
Bit No.
7:0
Bit No.
[7:0]
Bit No.
[7:0]
Bit 5
Description
Comparator Level 3 threshold. If the comparator input is below L3_TRP, the comparator trips and the
backlight enters Level 3 (dark) mode. The following lists the code settings for photosensor current:
00000000 = 0 μA
00000001 = 0.54 μA
00000010 = 1.08 μA
00000011 = 1.62 μA
…
11111111 = 137.7 μA
Bit 5
Description
Comparator Level 3 hysteresis. If the comparator input is above L3_TRP + L3_HYS, the comparator trips
and the backlight enters Level 2 (office) mode. The following lists the code settings for photosensor
current hysteresis:
00000000 = 0 μA
00000001 = 0.54 μA
00000010 = 1.08 μA
00000011 = 1.62 μA
…
11111111 = 137.7 μA
Bit 5
Description
Lower eight bits of the 13-bit conversion value for the first light sensor (Bit 7 to Bit 0). The value is
updated every 80 ms (when the light sensor is enabled). This is a read-only register.
Bit 4
Bit 4
Bit 4
Rev. A | Page 46 of 52
PH1LEV_LOW
L3_TRP
L3_HYS
Bit 3
Bit 3
Bit 3
Bit 2
Bit 2
Bit 2
Bit 1
Bit 1
Bit 1
Bit 0
Bit 0
Bit 0