U2043B - TEMIC Semiconductors

U2043B Automotive Flashers

The integrated circuit U2043B is used in relay controlled automotive flashers where a high EMC level is required. A lamp outage is indicated by frequency doubling during hazard mode as well as direction mode. Pilot lamp can be connected either to VBatt or GND. Features D Temperature and voltage compensated frequency D Warning indication of lamp failure by m.

Features

D Temperature and voltage compensated frequency D Warning indication of lamp failure by means of frequency doubling D Relay output with high current carrying capacity and low saturation voltage D Minimum lamp load for flasher operation w 10 W Package DIP8 SO8 D Low susceptibility to EMI Ordering Information Extended Type Number U2043B U2043B
  –FP Remarks Block Diagram + VS + 49 6 C1 Measuring comparator 4 K 1 V 6
  –81 mV 7 Pilot lamp Pulse generator 3.8 k W 8 K 3 V
  –5 V 6 49 a
  –Comparator 23 V 1 IC Ground 13283 2 R3 Shunt 30 m W 5W R1 3 Relay R2 3.3 k W 49 a 5 R1 100 W GND
  – 31 5 W 21.