GENERAL DESCRIPTION
The TDA3603 is a multiple output voltage regulator with a power switch, intended for use in car radios with or without a microcontroller.

FEATURES
General
• One VPstate controlled regulator (regulator 2)
• Regulator 2, reset and ignition buffer operate during load dump and thermal shutdown
• One control pin for switching regulator 1 and the power switch
• Supply voltage range of−18 to +50 V (operating from 9.75 V)
• Low reverse current of regulator 2
• Low quiescent current (when regulator 1, power switch and ignition input are switched off, standby)
• Ignition input/output
• Reset output
• High ripple rejection
• Power switch.

Protections
• Reverse polarity safe (down to−18 V without high reverse current)
• Able to withstand voltages up to 18 V at the outputs (supply line may be shortened)
• ESD protected on all pins
• Thermal protection
• Load dump protection
• Foldback current limit protection for regulators 1 and 2
• Delayed second current limit protection for the power switch
• The regulator outputs and the power switch are DC short-circuited safe to ground and VP.