ADP5501 Analog Devices, ADP5501 Datasheet - Page 19

• 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

REGISTER MAP
All registers are 0 on reset. Unused bits are read as 0.
Table 6.
Register
Address
0x00
0x01
0x02
0x03
0x04
0x05
0x06
0x07
0x08
0x09
0x0A
0x0B
0x0C
0x0D
0x0E
0x0F
0x10
0x11
0x12
0x13
0x14
0x15
0x16
Register Name
MODE_STATUS
INTERRUPT_ENABLE
BL_CONTROL
BL_TIME
BL_FADE
DAYLIGHT_MAX
DAYLIGHT_DIM
OFFICE_MAX
OFFICE_DIM
DARK_MAX
DARK_DIM
BL_VALUE
ALS_CMPR_CFG
L2_TRIP
L2_HYS
L3_TRIP
L3_HYS
LED_SINK_CONTROL
LED_TIME
LED_FADE
LED0_CURRENT
LED1_CURRENT
LED2_CURRENT
Sets enables and filters for ambient light sensor comparators; contains comparator output status bits.
Contains enables and configuration for the LED current sinks.
Register Description
Sets the device operating mode; contains enables for backlight on/dim and top level interrupt status bits.
Contains enables for allowing interrupts to assert INT.
Sets parameters relating to backlight control.
Contains backlight off and dim timers.
Contains backlight fade-in and fade-out timers.
Sets the daylight (L1) maximum current.
Sets the daylight (L1) dim current.
Sets the office (L2) maximum current.
Sets the office (L2) dim current.
Sets the dark (L3) maximum current.
Sets the dark (L3) dim current.
Read-only register of what the backlight is presently set to.
Sets the light sensor comparator (L2_CMPR) threshold point.
Sets the light sensor comparator (L2_CMPR) hysteresis.
Sets the light sensor comparator (L3_CMPR) threshold point.
Sets the light sensor comparator (L3_CMPR) hysteresis.
Contains the on and off timers for the status LED current sinks.
Contains the fade-in and fade-out timers for the status LED current sinks.
Sets the LED0 sink current.
Sets the LED1 sink current.
Sets the LED2 sink current.
Rev. 0 | Page 19 of 28
ADP5501