JAJSFQ9C june 2018 – may 2023 BQ25713 , BQ25713B
PRODUCTION DATA
To set the output charge voltage, write a 16-bit ChargeVoltage register command (REG0x05/04()) using the data format listed in Figure 9-22, Table 9-25, and Table 9-26. The charger provides charge voltage range from 1.024 V to 19.200 V, with 8-mV step resolution. Any write below 1.024 V or above 19.200 V is ignored.
Upon POR, REG0x05/04() is by default set as 4200 mV for 1 s, 8400 mV for 2 s, 12600 mV for 3 s or 16800 mV for 4 s. After CHRG_OK goes high, the charge will start when the host writes the charging current to REG0x03/02(), the default charging voltage is used if REG0x05/04() is not programmed. If the battery is different from 4.2 V/cell, the host has to write to REG0x05/04() before REG0x03/02() for correct battery voltage setting. Writing REG0x05/04() to 0 will set REG0x05/04() to the default value based on CELL_BATPRESZ pin, and force REG0x03/02() to zero to disable charge.
The SRN pin senses the battery voltage for voltage regulation and should be connected as close to the battery as possible, and directly place a decoupling capacitor (0.1 µF recommended) as close to the device as possible to decouple high frequency noise.
7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
Reserved | Max Charge Voltage, bit 11 | Max Charge Voltage, bit 10 | Max Charge Voltage, bit 9 | Max Charge Voltage, bit 8 | Max Charge Voltage, bit 7 | Max Charge Voltage, bit 6 | Max Charge Voltage, bit 5 |
R/W | R/W | R/W | R/W | R/W | R/W | R/W | R/W |
7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
Max Charge Voltage, bit 4 | Max Charge Voltage, bit 3 | Max Charge Voltage, bit 2 | Max Charge Voltage, bit 1 | Max Charge Voltage, bit 1 | Reserved | ||
R/W | R/W | R/W | R/W | R/W | R/W |
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset |
I2C 05h | FIELD | TYPE | RESET | DESCRIPTION |
---|---|---|---|---|
7 | Reserved | R/W | 0b | Not used. 1 = invalid write. |
6 | Max Charge Voltage, bit 11 | R/W | 0b | 0 = Adds 0 mV of charger voltage. 1 = Adds 16384 mV of charger voltage. |
5 | Max Charge Voltage, bit 10 | R/W | 0b | 0 = Adds 0 mV of charger voltage. 1 = Adds 8192 mV of charger voltage |
4 | Max Charge Voltage, bit 9 | R/W | 0b | 0 = Adds 0 mV of charger voltage. 1 = Adds 4096 mV of charger voltage. |
3 | Max Charge Voltage, bit 8 | R/W | 0b | 0 = Adds 0 mV of charger voltage. 1 = Adds 2048 mV of charger voltage. |
2 | Max Charge Voltage, bit 7 | R/W | 0b | 0 = Adds 0 mV of charger voltage. 1 = Adds 1024 mV of charger voltage. |
1 | Max Charge Voltage, bit 6 | R/W | 0b | 0 = Adds 0 mV of charger voltage. 1 = Adds 512 mV of charger voltage. |
0 | Max Charge Voltage, bit 5 | R/W | 0b | 0 = Adds 0 mV of charger voltage. 1 = Adds 256 mV of charger voltage. |
I2C 04h | FIELD | TYPE | RESET | DESCRIPTION |
---|---|---|---|---|
7 | Max Charge Voltage, bit 4 | R/W | 0b | 0 = Adds 0 mV of charger voltage. 1 = Adds 128 mV of charger voltage. |
6 | Max Charge Voltage, bit 3 | R/W | 0b | 0 = Adds 0 mV of charger voltage. 1 = Adds 64 mV of charger voltage. |
5 | Max Charge Voltage, bit 2 | R/W | 0b | 0 = Adds 0 mV of charger voltage. 1 = Adds 32 mV of charger voltage. |
4 | Max Charge Voltage, bit 1 | R/W | 0b | 0 = Adds 0 mV of charger voltage. 1 = Adds 16 mV of charger voltage. |
3 | Max Charge Voltage, bit 0 | R/W | 0b | 0 = Adds 0 mV of charger voltage. 1 = Adds 8 mV of charger voltage. |
2-0 | Reserved | R/W | 000b | Not used. Value Ignored. |