JAJSM11 may 2021 BQ25720
PRODUCTION DATA
To set the input voltage limit, write a 16-bit InputVoltage register command (REG0x()) using the data format listed in Figure 9-28, Table 9-46, and Table 9-47.
If the input voltage drops more than the InputVoltage register allows, the device enters VINDPM and reduces the charge current. The default setting is 1.28 V below the no-load VBUS voltage. There is fixed offset voltage 3.2V for all codes.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 |
Reserved | Input Voltage, bit 7 | Input Voltage, bit 6 | Input Voltage, bit 5 | Input Voltage, bit 4 | Input Voltage, bit 3 | Input Voltage, bit 2 | |
R/W | R/W | R/W | R/W | R/W | R/W | R/W | |
7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
Input Voltage, bit 1 | Input Voltage, bit 0 | Reserved | |||||
R/W | R/W | R/W |
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset |
SMBus BIT |
FIELD | TYPE | RESET | DESCRIPTION |
---|---|---|---|---|
15-14 | Reserved | R/W | 00b | Not used. 1 = invalid write. |
13 | Input Voltage, bit 7 | R/W | 0b | 0 = Adds 0 mV of input voltage. 1 = Adds 8192 mV of input voltage. |
12 | Input Voltage, bit 6 | R/W | 0b | 0 = Adds 0 mV of input voltage. 1 = Adds 4096mV of input voltage. |
11 | Input Voltage, bit 5 | R/W | 0b | 0 = Adds 0 mV of input voltage. 1 = Adds 2048 mV of input voltage. |
10 | Input Voltage, bit 4 | R/W | 0b | 0 = Adds 0 mV of input voltage. 1 = Adds 1024 mV of input voltage. |
9 | Input Voltage, bit 3 | R/W | 0b | 0 = Adds 0 mV of input voltage. 1 = Adds 512 mV of input voltage. |
8 | Input Voltage, bit 2 | R/W | 0b | 0 = Adds 0 mV of input voltage. 1 = Adds 256 mV of input voltage. |
SMBus BIT |
FIELD | TYPE | RESET | DESCRIPTION |
---|---|---|---|---|
7 | Input Voltage, bit 1 | R/W | 0b | 0 = Adds 0 mV of input voltage. 1 = Adds 128 mV of input voltage. |
6 | Input Voltage, bit 0 | R/W | 0b | 0 = Adds 0 mV of input voltage. 1 = Adds 64 mV of input voltage |
5-0 | Reserved | R/W | 000000b | Not used. Value Ignored. |