The U2043B is an integrated circuit 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. It features temperature and voltage compensated frequency, warning indication of lamp failure by means of frequency doubling, minimum lamp load for flasher operation, relay output with high current carrying capacity and low saturation voltage, and low susceptibility to EMI.
The TEMIC U2043B is an integrated circuit designed for use in relay-controlled hazard and direction modes in automotive applications. It features a high EMC level, temperature and voltage compensated frequency, and warning indication of lamp failure via low-frequency doubling.
The device includes a relay output with high current carrying capacity and low saturation voltage, capable of driving typical automotive relays. It supports pilot lamps connected to either Vga or GND and requires a minimum lamp load of 10 W for operation.
| Supply voltage range | 9 to 15 V |
|---|---|
| Minimum lamp load | 10 W |
| Shunt resistance | 30 mΩ |
| Ambient temperature range | -40 to +95 °C |
| Junction temperature | 150 °C |
The minimum lamp load for flasher operation is 10 W.
A lamp outage is indicated by frequency doubling during flashing.