GENERAL DESCRIPTION
The TDA3617J is a multiple output voltage regulator with three independent regulators. It contains:

1. Three fixed voltage regulators with foldback current protection (regulators 1, 2 and 3)
2. A supply pin that can withstand load dump pulses and negative supply voltages
3. Independent enable inputs for regulators 1, 2 and 3
4. Local temperature protection for regulator 3
5. A hold output that can be used to interface with a microprocessor. The hold indicates that the selected
output voltages are available and within their ranges.

FEATURES
General
• Three VP-state controlled regulators (regulators 1, 2 and 3)
• Very good stability and noise behaviour
• Separate control pins for switching regulators 1, 2 and 3
• Supply voltage range from−18 to +50 V
• Low quiescent current (when regulators 1, 2 and 3 are switched off)
• High ripple rejection
• Hold output for indicating regulator 1 and/or 2 and/or 3 out of regulation.

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 short circuited)
• ESD protection on all pins
• Thermal protection
• Load dump protection
• Foldback current limit protection for regulators 1, 2 and 3
• DC short-circuit safe to ground and VPfor all regulator outputs.