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U2043B - Flasher

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.

The pilot lamp can be connected either to VBatt or GND.

Key Features

  • Temperature and Voltage Compensated Frequency Warning Indication of Lamp Failure by Means of Frequency Doubling Minimum Lamp Load for Flasher Operation ≥ 10W Relay Output with High Current Carrying Capacity and Low Saturation Voltage.
  • Low Susceptibility to EMI.
  • www. DataSheet4U. com 1.

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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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Features Temperature and Voltage Compensated Frequency Warning Indication of Lamp Failure by Means of Frequency Doubling Minimum Lamp Load for Flasher Operation ≥ 10W Relay Output with High Current Carrying Capacity and Low Saturation Voltage • Low Susceptibility to EMI • • • • www.DataSheet4U.com 1. 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. The pilot lamp can be connected either to VBatt or GND. Figure 1-1. Block Diagram +VS + 49 6 C1 Measuring comparator 4 K 1 V 6-81 mV 7 Pilot lamp Pulse generator 3.