The 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.
The Atmel U2043B is an integrated circuit designed for use in relay-controlled hazard and direction modes in automotive applications. It features a high EMC level, capable of driving relays with low saturation voltage and indicating lamp failures through frequency doubling.
The device operates with a minimum lamp load of 10 W and includes temperature and voltage compensated frequency generation. It is available in DIP8 and SO8 packages and supports supply voltages ranging from 9 V to 15 V.
| Supply voltage range | 9 to 15 V |
|---|---|
| Minimum lamp load | 10 W |
| Relay coil resistance | 60 Ω |
| Ambient temperature range | -55 to +150 °C (Storage) |
| Junction temperature | 150 °C |
The device requires a minimum lamp wattage of 10 W for proper start conditions.
The device requires a minimum lamp load of 10 W to operate correctly.
The absolute maximum supply voltage is 16.5 V.