U479B - Automotive Lamp Outage Monitor/ VT = 8 mV

Datasheet Summary

Description

The monolithic integrated bipolar circuit, U479B, is designed as a monitor for lamp failure in automobiles.

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

VT whereas VT = 8 mV.

Features

D D D D 2 kV.
ESD protection Two comparators with common reference Tight threshold tolerance Threshold matched to PTC characteristic of incandescent lamps D NPN output D Interference and damage.
protection according to VDE 0839 D Temperature compensated D EMI protection D Reversal polarity protection D Load-dump protection Ordering Information Extended Type Number U479B U479B.
FP Package DIP8 SO8 Remarks Block Diagram VS 2 Rsh Z2.
+ 0.6 VS.
+ 8.

TEMIC Semiconductors

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Datasheet Details

Part number	U479B
Manufacturer	TEMIC Semiconductors
File Size	79.54 KB
Description	Automotive Lamp Outage Monitor/ VT = 8 mV
Datasheet	U479B Datasheet
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U479B Automotive Lamp Outage Monitor, VT = 8 mV Description The monolithic integrated bipolar circuit, U479B, 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 V4,6 = VS – VT whereas 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. A not used comparator input must be connected to Pin 7.

Published: Apr 16, 2005 |