U644B - Flasher/ 18-m Shunt/ Extremly Low Current Consumption

TEMIC Semiconductors

Datasheet Details

The bipolar integrated circuit, U644B, is used in relaycontrolled automotive flashers where a high level EMC is required.

D Frequency doubling indicates lamp outage D Frequency independent of temperature and voltage change D Minimum lamp load for flasher operation: D Very low susceptibility to EMI 1 W D Relay driver output with high current-carrying capacity and low saturation voltage D Protection according to ISO TR7637/1 level 4 D Control input (Kl 15) Ordering Information Extended Type Number U644B U644B-FP Package DIP8 SO8 Remarks Block Diagram R5 10 kW 30 2 Measuring comparator K 1 V S.
49 mV 4.

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