U4790B - Automotive Lamp-Outage Monitor

Datasheet Summary

Description

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.

VT where VT = 8 mV.

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 polarity protection D Load-dump protection Ordering Information Extended Type Number U4790B Package DIP8 Remarks Block Diagram VS 2 Rsh Z2.
+ & Z5 0.6 VS.
+ 8.
+ 6 Z3 1 95 10.

TEMIC

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Datasheet Details

Part number	U4790B
Manufacturer	TEMIC
File Size	179.36 KB
Description	Automotive Lamp-Outage Monitor
Datasheet	U4790B Datasheet
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www.DataSheet4U.com U4790B Automotive Lamp-Outage Monitor, VT = 8 mV, VZ(3,5) = 22 V Description 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, exceeds 8 mV, the output is turned off, otherwise the output is turned on. Without supply voltage or open input Pin 8, the output is turned off. An unused comparator input must be connected to Pin 7.

Published: Oct 13, 2006 |