ZHCSNB8A February 2021 – January 2024 BQ25730
PRODUCTION DATA
To set the input voltage limit, write a 16-bit InputVoltage register command (REG0x0B/0A()) using the data format listed in Figure 8-36, Table 8-48, and Table 8-49.
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 a fixed DC offset 3.2 V for all codes.
| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
| 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 |
| BIT | FIELD | TYPE | RESET | DESCRIPTION |
|---|---|---|---|---|
| 7-6 | Reserved | R/W | 00b | Not used. 1 = invalid write. |
| 5 | Input Voltage, bit 7 | R/W | 0b | 0 = Adds 0 mV of input voltage. 1 = Adds 8192 mV of input voltage. |
| 4 | Input Voltage, bit 6 | R/W | 0b | 0 = Adds 0 mV of input voltage. 1 = Adds 4096 mV of input voltage. |
| 3 | Input Voltage, bit 5 | R/W | 0b | 0 = Adds 0 mV of input voltage. 1 = Adds 2048 mV of input voltage. |
| 2 | Input Voltage, bit 4 | R/W | 0b | 0 = Adds 0 mV of input voltage. 1 = Adds 1024 mV of input voltage. |
| 1 | Input Voltage, bit 3 | R/W | 0b | 0 = Adds 0 mV of input voltage. 1 = Adds 512 mV of input voltage. |
| 0 | Input Voltage, bit 2 | R/W | 0b | 0 = Adds 0 mV of input voltage. 1 = Adds 256 mV of input voltage. |
| 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. |