U643B-FP

Flasher, 30m Shunt

Description

The bipolar integrated circuit U643B is used in relay controlled automotive flashers where a high-level EMC is required.

Lamp outage is indicated by frequency doubling during hazard warning as well as direction mode.

Features

• Temperature and supply voltage compensated flashing frequency

• Frequency doubling indicates lamp outage

• Relay driver output with high current carrying capacity and low saturation voltage

• Minimum lamp load for flasher operation: ≥ 1 W

• Very low susceptibility to EMI

• Protection according to ISO/TR 7637/1 level 4