U2044B_08 datasheet(1/9 Pages) ATMEL

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U2044B Datasheet(PDF) 1 Page - ATMEL Corporation

1 / 9 page

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

Description

The integrated circuit U2044B is used in relay-controlled automotive flashers. With

two output stages, each side of the vehicle is controlled separately. A left and a right

direction indicator input with only a small control current makes switch contacts for

small loads possible.

The separate hazard warning input simplifies the construction of the hazard switch.

Lamp outage is indicated by frequency doubling during direction mode. Thanks to

extreme low current consumption the U2044B can be directly connected to the

battery.

Dual Output

Flasher

U2044B

4721C–AUTO–02/08

Manufacturer	Part #	Datasheet	Description
ATMEL Corporation	U2044B	227Kb / 9P	Dual Output Flasher

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