Microchip Technology U2044B-MFP

Description
The U2044B integrated circuit is designed for use in relay-controlled automotive flashers. It features two output stages that control each side of the vehicle separately. The left and right direction indicator inputs require only a small control current, enabling the use of switch contacts for small loads. A separate hazard warning input simplifies the construction of the hazard switch.

Features
Temperature and supply voltage compensated flashing frequency
Frequency doubling indicates lamp outage
Two relay driver outputs with high current-carrying capacity and low saturation voltage
Minimum lamp load for flasher operation: >1W
Very low susceptibility to EMI
Protection according to ISO/TR7637/1 Level 4
Extremely low current consumption (<10 μA with switches open)
Reverse polarity protection
Three control inputs: Left, Right, and Hazard Warning

Applications
The U2044B is suitable for use in automotive flashers, particularly those with relay-controlled outputs. Its features make it ideal for applications where temperature and voltage fluctuations can affect the flashing frequency, and where lamp outage detection is required.