MAX14720 Datasheet, PDF (22/38 Pages) Maxim Integrated Products – Extended System Battery Use Time

MAX14720/MAX14750
Power-Management Solution
Table 13. SwitchCfg Register (0x0C)
ADDRESS:
BIT
NAME
0x0C
7
6
5
SWSeq[2:0] (Read-Only)
4
3
—
—
2
1
SWEn[1:0]
SWSeq[2:0]
SW Enable Configuration (Read-Only)
000 = Disabled
001 = Enabled always when BAT/SYS is present
010 = Enabled at 0% of Boot/POR Process Delay Control
011 = Enabled at 25% of Boot/POR Process Delay Control
100 = Enabled at 50% of Boot/POR Process Delay Control
101 = Disabled
110 = Controlled by SWEN (MAX14750)
111 = Controlled by SWEn[1:0] after 100% of Boot/POR Process Delay Control
SWEn
SWSoftStart
SW Enable Configuration (effective only when SWSeq[2:0] == 111)
00 = Disabled
01 = Enabled
10 = Enabled when MPC is high
11 = Reserved
SW SoftStart
0 = No soft-start is present when the switch is enabled.
1 = Current limit of 25mA (typ) is ensured for 60ms when the switch is enabled.
0
SWSoftStart
Table 14. BatTime Register (0x0D)
ADDRESS:
0x0D
BIT
7
6
NAME
—
—
5
4
BCVTm[1:0]
BCVTm[1:0]
Battery Cell Voltage Timing
00: Skip battery measurement
01: Take battery measurement after 10ms delay
10: Take battery measurement after 100ms delay
11: Take battery measurement after 1000ms delay
3
2
OCVTm[1:0]
OCVTm[1:0]
Battery Open Cell Voltage Timing
If this step is skipped, LCV measurement will be taken with switch closed
00: Skip OCV measurement
01: Take OCV measurement after 10ms delay
10: Take OCV measurement after 100ms delay
11: Take OCV measurement after 1000ms delay
LCVTm[1:0]
Battery Loaded Cell Voltage Timing
00: Skip LCV measurement
01: Take LCV measurement after 10ms delay
10: Take LCV measurement after 100ms delay
11: Take LCV measurement after 1000ms delay
1
0
LCVTm[1:0]
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