UCC33420-Q1
pre-production samples have the following operating limits. Production devices will have
these limitations removed.
- For ambient operating temperature <
0°C, the following sequence is required to allow the device reach regulation point.
EN/FLT is required to be high before applying input voltage VINP to the device. This can
be achieved by connecting EN/FLT pin after the 18kΩ resistor directly to the VINP pin
and applying VINP with slew rate > 2mSec on the device.
- For ambient operating temperature <
0°C, the following protection features will be disabled. Output under-voltage
protection, output short circuit protection and output over-voltage protection. Fault
reporting and auto-restart features due to these faults will be disabled.