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U643B Datasheet - ATMEL Corporation

U643B - Flasher IC

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.

U643B Rev.

4727B *AUTO *09/05 2.

Block Diagram Figure 2-1.

Car Fl

U643B 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: ≥ 1W

* Very Low Susceptib

U643B_ATMELCorporation.pdf

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Datasheet Details

Part number:

U643B

Manufacturer:

ATMEL Corporation

File Size:

214.64 KB

Description:

Flasher ic.

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