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