ADP5501 Analog Devices, ADP5501 Datasheet - Page 22

• Manufacturer Part Number: ADP5501
• Description: Programmable Current Backlight Driver with Ambient Light Sensor Input
• Manufacturer: Analog Devices

Specifications of ADP5501

• Vin Range: 2.7 to 5.5V
• Vout (v): 24 to 27
• Synchronous: No
• Package: 24-Lead LFCSP
• Led Configuration: Serial
• Topology: Inductive
• I2c Support: Yes
• Max Iout (ma): 30mA
• Brightness Control: I2C
• Switching Frequency: 1MHz
• Over Volt Protection (v): 24V

ADP5501
Table 11. Register 0x04, Backlight Fade-In and Fade-Out Timers (BL_FADE)
Bit
7 to 4
3 to 0
Table 12. Register 0x05, Level 1 (Daylight) Maximum Current (DAYLIGHT_MAX)
Bit
7
6 to 0
Table 13. Register 0x06, Level 1 (Daylight) Dim Current (DAYLIGHT_DIM)
Bit
7
6 to 0
Table 14. Register 0x07, Level 2 (Office) Maximum Current (OFFICE_MAX)
Bit
7
6 to 0
Name
BL_FO
BL_FI
Name
Not used
DAYLIGHT_MAX
Name
Not used
OFFICE_MAX
Not used
DAYLIGHT_DIM
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Description
Backlight fade-out timer; the timer should be set before BL_EN is set.
0000 = the timer is disabled.
0001 = 0.3 sec.
0010 = 0.6 sec.
0011 = 0.9 sec.
0100 = 1.2 sec.
0101 = 1.5 sec.
0110 = 1.8 sec.
0111 = 2.1 sec.
1000 = 2.4 sec.
1001 = 2.7 sec.
1010 = 3.0 sec.
1011 = 3.5 sec.
1100 = 4.0 sec.
1101 = 4.5 sec.
1110 = 5.0 sec.
1111 = 5.5 sec.
Backlight fade-in timer; the timer should be set before BL_EN is set.
0000 = the timer is disabled.
0001 = 0.3 sec.
0010 = 0.6 sec.
0011 = 0.9 sec.
0100 = 1.2 sec.
0101 = 1.5 sec.
0110 = 1.8 sec.
0111 = 2.1 sec.
1000 = 2.4 sec.
1001 = 2.7 sec.
1010 = 3.0 sec.
1011 = 3.5 sec.
1100 = 4.0 sec.
1101 = 4.5 sec.
1110 = 5.0 sec.
1111 = 5.5 sec.
Description
Maximum current setting for the backlight when BL_LVL is at Level 1 (daylight).
See Figure 16 for the backlight current vs. sink code relationship.
Description
Dim current setting for the backlight when BL_LVL is at Level 1 (daylight).
See Figure 16 for the backlight current vs. sink code relationship.
Description
Maximum current setting for the backlight when BL_LVL is at Level 2 (office).
See Figure 16 for the backlight current vs. sink code relationship.
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