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U4791B - Automotive Lamp Outage Monitor/ VT = 53 mV

Datasheet Summary

Description

The monolithic integrated bipolar circuit, U4791B, 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 = 53 mV.

Features

  • D D D D 10 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 U4791B U4791B.
  • FP Package DIP8 SO8 Remarks Block Diagram VS 2 Rsh Z2.
  • + 0.6 VS 8.
  • + 6 Z3.

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Datasheet preview – U4791B

Datasheet Details

Part number U4791B
Manufacturer TEMIC Semiconductors
File Size 80.63 KB
Description Automotive Lamp Outage Monitor/ VT = 53 mV
Datasheet download datasheet U4791B Datasheet
Additional preview pages of the U4791B datasheet.

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Full PDF Text Transcription

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U4791B Automotive Lamp Outage Monitor, VT = 53 mV Description The monolithic integrated bipolar circuit, U4791B, 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 whereas VT = 53 mV. The integrated circuit is recommended for the application of parallel connected lamps. If the voltage drop across shunt resistor, Rsh, exceeds 53 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 must be connected to Pin 7.
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