Part Number: TPS1HC30-Q1
Tool/software:
Hi TI team,
I'm using the TPS1HC30-Q1 in a design where the supply voltage (VBB) is 3.3V. I understand that the device lists an Extended Supply Voltage Range from 2.6V to 28V, and that it is "fully functional and protected" in that range, but with possible deviations in parameters such as RON, current sense accuracy, and timing.
However, in my tests, the device does not turn on the high-side output at 3.3V. It only begins functioning properly when VBB reaches 3.5V or higher.
I’d like to confirm:
-
Is it expected that the high-side switch does not turn on at 3.3V due to the undervoltage lockout threshold (UVLO rising typically at 3.5V)?
-
If so, what exactly does "fully functional" mean in the extended range? Are there any specific conditions under which the switch output would still operate at 3.3V?
- Is there anything I need to change in my schematic to use 3.3V?
Thanks in advance for your clarification!
Best regards,
[Oh]
