U643B-MY 데이터 시트보기 (PDF) - Atmel Corporation

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U643B-MY

Flasher/ 30-mohm Shunt

Atmel Corporation 

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 Susceptibility to EMI

• Protection According to ISO/TR 7637/1 Level 4

Flasher IC with

30-mΩ Shunt

1. Description

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

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