TDA3681
Overview
- Extremely low noise behaviour and good stability with very small output capacitors
- Second supply pin for regulators 3 and 4 to reduce power dissipation (e.g. via a DC-to-DC converter)
- Three VP-state controlled regulators (regulators 1, 3 and 4) and a power switch
- Regulator 2, reset and ignition buffer operational during load dump and thermal shutdown
- Combined control pin for switching regulators 1 and 3
- Separate control pins for switching regulator 4 and the power switch
- Supply voltage range from -18 to +50 V
- Low quiescent current in standby mode (when regulators 1, 3 and 4 and power switch are switched off and ignition input is low)
- Hold output for low VP (regulators 1, 3 and 4 and power switch off)
- Hold output when one of regulators 1 and 3 and/or 4 is out of regulation
