Other Parts Discussed in Thread: BQ25125, BQ25123, BQ25121A, BQ25122, BQ25120F3A
The devices BQ25120A, BQ25121A, BQ25122, BQ25123, BQ25125, etc., are all part of the same family of battery chargers: BQ25120x. They function similarly, but the default registers vary by device selection. Below table shows the key differences between the devices. Please refer to the datasheet for more information and to select the right device for your application.
Device |
VSYS |
LS/LDO (Default) |
VIN_DPM |
Watchdog Timer |
DPPM |
BQ25120A |
1.8V |
Load Switch |
Enabled |
Enabled |
Enabled |
BQ25121A |
2.5V |
Load Switch |
Enabled |
Disabled |
Enabled |
BQ25122 |
1.2V |
Load Switch |
Enabled |
Enabled |
Enabled |
BQ25123 |
1.25V |
LDO (3.0V) – Disable |
Enabled |
Enabled |
Enabled |
BQ25125 |
1.8V |
LDO (1.8V) – Disable |
Disabled |
Enabled |
Disabled |
BQ25120F3A |
1.8V |
LDO (1.8V) – Disable |
Enabled |
Disabled |
Enabled |