ZHCSC12D November 2013 – October 2019 DRV8850
PRODUCTION DATA.
The LDO regulator can be active independent of the nSLEEP pin. This independence allows a microcontroller, or other device, to be powered by the LDO voltage regulator, while retaining the ability to put the DRV8850 device into sleep mode.
Because of this functionality, nSLEEP and LDOEN must both be brought logic low to minimize power consumption in sleep mode. If the LDO regulator remains active in sleep mode, a quiescent current of IVCQ2 (typically 50 µA plus current through the external feedback resistors) is drawn from the supply.
Table 2 lists the operation mode logic for the DRV8850 device.
| nSLEEP | LDOEN | LDO REGULATOR | DRIVER |
|---|---|---|---|
| 0 | 0 | Off | Sleep |
| 0 | 1 | Active | Sleep |
| 1 | 0 | Off | Active |
| 1 | 1 | Active | Active |