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U2043B - Automotive Flashers

General Description

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.

Key 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.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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U2043B Flasher, 30-mW Shunt, Pilot Lamp to GND or VBatt Description 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 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.