GENERAL DESCRIPTION
The TDA3616 is a low power voltage regulator. It contains the following:
• One fixed voltage regulator with a foldback current protection, intended to supply a microprocessor, that also operates during load dump
• A provision for use of a reserve supply capacitor that will hold enough energy for the regulator to allow a microcontroller to prepare for loss of supply voltage
• Reset signals which can be used to interface with the microprocessor
• A supply pin that can withstand load dump pulses and negative supply voltages
• Defined start-up behaviour; regulator will be switched on at a supply voltage higher than 7.5 V and off when the output voltage of the regulator drops below 2.4 V.

FEATURES
General
• One VP-state controlled regulator
• Battery detection circuit
• Regulator, reset and battery outputs operate during load dump
• Supply voltage range from −18 to +50 V
• Low quiescent current (battery detection switched off)
• High ripple rejection
• Dual reset output
• Backup circuit
• Adjustable reset delay timer.

Protections
• Reverse polarity safe (down to −18 V without high reverse current)
• Able to withstand voltages up to 18 V at the output (supply line may be short-circuited)
• ESD protected on all pins
• Load dump protection
• Foldback current limit protection for regulator
• The regulator output is DC short-circuited safe to ground and VP.