STCF04TBR Datasheet, PDF (28/43 Pages) STMicroelectronics – High power white LED SuperCap™ driver with I²C interface

Description of the internal registers
Table 22.
DC-DC converter coil peak current limit values
IDC_0
0
1
I_{COIL (PEAK)}
1.45 A
1.80 A
STCF04
9.6
Torch register (TRCH_REG) 05(hex)
Table 23. Torch register
VRID_REG
(Read mode)
MSB
LSB
SUB ADD=05
TTRCH1 TTRCH0 TDIM_3 TDIM_2 TDIM_1 TDIM_0 N/A
N/A
Power-ON, Shutdown
mode RESET value
0
0
0
0
0
0
0
0
TTRCH_0~1: these bits define the Torch mode time.
TDIM_0~3: these 4 bits define the LED current in Torch mode with 12 values.
Table 24. Torch mode dimming registers settings
TDIM (hex)
0
1
2
3
4
LED current [mA]
15 20 30 45 60
Internal step
1
2
3
4
5
5
6
7
8
9
A
B
75 100 120 160 200 240 320
6
7
8
9 10 11 12
Table 25. The safety timeout for Torch mode
TTRCH1
TTRCH0
0
0
0
1
1
0
1
1
Torch time
Infinity
5s
10s
15s
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Doc ID 022927 Rev 3