U4790B Datasheet (TEMIC) - Automotive Lamp-Outage Monitor

U4790B, Automotive Lamp-Outage Monitor

The bipolar IC U4790B is designed as a monitor for lamp failure in automobiles.

The comparator threshold is matched to the PTC characteristic of incandescent lamps.

The threshold is tied to a typical value of V4,6 = VS * VT where VT = 8 mV.

If the voltage drop across shunt resistor, Rsh, exc

U4790B Features

* D 10 kV

* ESD protection D Two comparators with common reference D Tight threshold tolerance D Threshold matched to PTC characteristic of incandescent lamps D Temperature compensated D NPN output D Interference and damage

* protection according to VDE 0839 D EMI protection D Reversal pol