TDA3618JR

The TDA3618JR is a multiple output voltage regulator with a power switch and ignition buffers, intended for use in car radios with or without a microcontroller. It contains:

· Two fixed voltage regulators with a foldback current protection (regulators 1 and 3) and one fixed voltage regulator (regulator 2), intended to supply a TDA3618JR, which also operates during load dump and thermal shutdown

· A power switch with protections, operated by an enable input

· Reset and hold outputs that can be used to interface with the microcontroller. The reset signal can be used to call up the TDA3618JR.

· A supply pin which can withstand load dump pulses and negative supply voltages

· Regulator 2, which is switched on at a backup voltage greater than 6.5 V and off when the output voltage of regulator 2 drops below 1.9 V

· A provision for the use of a reserve supply capacitor that will hold enough energy for regulator 2 (5 V continuous) to allow a TDA3618JR to prepare for loss of voltage

· An inverted ignition 1 input with open collector output stage

· An ignition 2 input Schmitt trigger with push-pull output stage.