TDA3605Q

The TDA3605Q is a multiple output voltage regulator with a power switch, intended for use in car radios with or without a microcontroller. TDA3605Q contains:

1. Two fixed voltage regulators with a foldback current protection (regulator 1 and regulator 3) and one fixed voltage regulator (regulator 2), intended to supply a microcontroller, that also operates during load dump and thermal shutdown.

2. A power switch with protections, operated by an enable input.

3. Reset and hold outputs can be used to interface by the microcontroller. The reset signal can be used to call up the microcontroller and the hold output indicates regulator 1 voltage available and within range.

4. A supply pin Tof DA3605Q which can withstand load dump pulses and negative supply voltage.

5. Regulator 2 will be switched on at a supply voltage >6.5 V and off at a voltage of regulator 2 <1.9 V.

6. Also there is a provision for use of a reserve supply capacitor that will hold enough energy for regulator 2 (5 V continuous) to allow a microcontroller to prepare for loss of voltage.