The TPS43331-Q1 is a multi-rail output voltage regulator, with two synchronous switch
mode controllers and two linear regulators. In addition, there is a reverse protected high side
switch and voltage supervisor for monitoring the standby regulator and input voltage. The regulator
outputs and high side switch are controlled either by discrete inputs for certain outputs and
serial interface using the I2C configuration for outputs not controlled
by discrete inputs.
The standby linear regulator (VSTBY) is high voltage tolerant and can be connected
directly to the vehicle battery, the quiescent current is typically 65 µA to maintain a regulated
output with light loads.
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