I plan on using a TPS63061 as DC/DC to get a steady 5V from 4xAA batteries. The data sheet says:
8.3.4 Undervoltage Lockout
An undervoltage lockout function prevents device start-up if the supply voltage on VIN is lower than approximately its threshold (see the Electrical Characteristics table). When in operation, the device automatically enters the shutdown mode if the voltage on VIN drops below the undervoltage lockout threshold. The device automatically restarts if the input voltage recovers to the minimum operating input voltage.
The Electrical Characteristics table states:
UVLO Under voltage lockout threshold:
Input voltage falling | min 1.8V | typ 1.9V | max 2.2V
Does this mean that the TPS63061 protects me from reverse polarity if I place my batteries in reversed order? Which would yield -6V which would be below 1.8V and hence the under voltage lockout function would protect me?
Or do I need an additional protection e.g. using a Schottky diode or MOSFET to avoid damage to the DC/DC and other components?