U479B Datasheet - ATMEL Corporation

U479B Automotive Lamp-outage Monitor IC

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 where VT = 8 mV. If the voltage drop across the shunt resistor, Rsh.

U479B Features

* 2-kV ESD Protection Two Comparators with Common Reference Tight Threshold Tolerance Threshold Matched to PTC Characteristic of Incandescent Lamps Temperature Compensated NPN Output Interference and Da

U479B_ATMELCorporation.pdf