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U2043B Datasheet Flasher

Manufacturer: Atmel (now Microchip Technology)

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.
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