RE: DRV110: Protection function for DRV110

Hello Ryuji,

• Thermal Shutdown:
  • at 160C the DRV110 will shut down, and the STATUS pin will float.
  • Once the temperature drops back to 140C, the DRV110 will resume operation and the STATUS pin will pull down.
  • Thermal shutdown may have been added for the DRV110 so it would be available on future products that leverage the same design, like the DRV120 which has an internal FET.
• UVLO
  
  • When the voltage at VIN is lower than 4.6 V the DRV110 will shut down, and the STATUS pin will float.
  • When VIN rises above 4.6 V, the DRV110 will resume operation and the STATUS pin will pull down.
• Maximum ramp time is not a protection feature. We will remove this from the front page in the next datasheet update
• STATUS output:

• Putting a pull-up resistor on the STATUS pin allows it to be read by a GPIO pin
• The STATUS pin will float when the DRV110 is in UVLO, temperature shutdown, or EN = LOW
• The STATUS pin pulls down to ground when the part is in normal operation (EN = 1)