ZHCSCK8G May 2014 – October 2017 LP8860-Q1
PRODUCTION DATA.
Address 0x72
EEPROM Register 16 | |||||||
---|---|---|---|---|---|---|---|
7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
BOOST_DRIVER_SIZE[1:0] | EN_ADAP | EN_JUMP | BRIGHTNESS_JUMP_THRES[1:0] | JUMP_STEP_SIZE[1:0] |
Name | Bit | Access | Description |
---|---|---|---|
BOOST_DRIVER_SIZE[1:0] | 7:6 | R/W | Boost gate driver scaling. Affects gate driver peak current and SW node voltage rise/fall times
00 = 0.4/0.45 A (typical) peak sink/source current 01 = 0.75/0.87 A (typical) peak sink/source current 10 = 1.2/1.3 A (typical) peak sink/source current 11 = 1.5/1.7 A (typical) peak sink/source current |
EN_ADAP | 5 | R/W | Enable boost converter adaptive mode
0 = adaptive mode disabled, boost converter output voltage is set with BOOST_INITIAL_VOLTAGE EEPROM register bits. 1 = adaptive mode enabled. Boost converter start-up voltage is set with BOOST_INITIAL_VOLTAGE EEPROM register bits. Further boost voltage is adapted to the highest LED string VF. If all LED outputs are in cluster mode, adaptive mode is disabled automatically. |
EN_JUMP | 4 | R/W | Enable large boost voltage jump command for the fast brightness increase.
0 = Normal steps used for boost voltage control 1 = Jump command allowed in boost voltage control |
BRIGHTNESS_JUMP_THRES[1:0] | 3:2 | R/W | Defines the magnitude of the input brightness change after which jump command is given.
00 = Jump command after 10% brightness change 01 = Jump command after 30% brightness change 10 = Jump command after 50% brightness change 11 = Jump command after 70% brightness change |
JUMP_STEP_SIZE[1:0] | 1:0 | R/W | Boost control step size that jump command increases backlight boost output voltage
00: 8 steps (1.0 V typ) 01: 16 steps (2.0 V typ) 10: 32 steps (4.0 V typ) 11: 64 steps (8.0 V typ) |