DRV2624 Datasheet, PDF (43/79 Pages) Texas Instruments – DRV2624 Ultra Low Power Closed-Loop LRA/ERM Haptic Driver with Internal Memory

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DRV2624
SLOS893A – DECEMBER 2015 – REVISED DECEMBER 2015
8.7.11 Address: 0x09
Figure 55. 0x09
7
6
5
4
3
BAT_LIFE_EXT_LVL_EN[1:0]
Reserved
R/W-0
R/W-0
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
Table 12. Address: 0x09
2
1
0
UVLO_THRES[2:0]
R/W-0
BIT FIELD
TYPE DEFAULT DESCRIPTION
7-6 BAT_LIFE_EXT_LVL_EN[1:0] R/W
0
Enables the BAT_LIFE_EXT functionality.
0
BAT_LIFE_EXT functionality disabled.
1
BAT_LIFE_EXT_LVL1 functionality enabled.
2
BAT_LIFE_EXT_LVL1 and BAT_LIFE_EXT_LVL2 functionality enabled.
5-3 Reserved
R/W
0
Reserved
2-0 UVLO_THRES[2:0]
R/W
0
Configures the UVLO threshold. If VDD voltage goes below this threshold, the output stage is
immediately turn off and the device is placed into stand-by mode.
0
UVLO threshold = 2.5 V.
1
UVLO threshold = 2.6 V.
2
UVLO threshold = 2.7 V.
3
UVLO threshold = 2.8 V.
4
UVLO threshold = 2.9 V.
5
UVLO threshold = 3 V.
6
UVLO threshold = 3.1 V.
7
UVLO threshold = 3.2 V.
8.7.12 Address: 0x0A
Figure 56. 0x0A
7
6
5
4
3
BAT_LIFE_EXT_LVL1[7:0]
R/W-1
R/W-0
R/W-0
R/W-1
R/W-0
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
2
R/W-0
1
R/W-1
0
R/W-0
BIT FIELD
7-0 BAT_LIFE_EXT_LVL1[7:0]
Table 13. Address: 0x0A
TYPE
R/W
DEFAULT DESCRIPTION
146 If VDD goes below the threshold specified by this parameter, the OD_CLAMP_LVL1 sets the
overdrive clamp for the device. Note that OD_CLAMP_LVL1 should always be greater or equal
to OD_CLAMP_LVL2. BAT_LIFE_EXT_LVL1 should be set higher than BAT_LIFE_EXT_LVL2.
The VDD voltage is sampled at the beginning of the effect only.
8.7.13 Address: 0x0B
Figure 57. 0x0B
7
6
5
4
3
BAT_LIFE_EXT_LVL2[7:0]
R/W-1
R/W-0
R/W-0
R/W-0
R/W-1
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
2
R/W-1
1
R/W-0
0
R/W-1
BIT FIELD
7-0 BAT_LIFE_EXT_LVL2[7:0]
Table 14. Address: 0x0B
TYPE
R/W
DEFAULT DESCRIPTION
141 If VDD goes below the threshold specified by this parameter, the OD_CLAMP_LVL2 sets the
overdrive clamp for the device. Note that OD_CLAMP_LVL1 should always be greater or equal
to OD_CLAMP_LVL2. BAT_LIFE_EXT_LVL1 should be set higher than BAT_LIFE_EXT_LVL2.
The VDD voltage is sampled at the beginning of the effect only.
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