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U479B

TEMIC Semiconductors
Part Number U479B
Manufacturer TEMIC Semiconductors
Description Automotive Lamp Outage Monitor/ VT = 8 mV
Published Apr 16, 2005
Detailed Description U479B Automotive Lamp Outage Monitor, VT = 8 mV Description The monolithic integrated bipolar circuit, U479B, is designe...
Datasheet PDF File U479B PDF File

U479B
U479B

Overview
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.
Features D D D D 2 kV–ESD protection Two comparators with common reference Tight threshold tolerance Threshold matched to PTC characterist...


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