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

Datasheet Summary

Description

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

Lamp outage is indicated by frequency doubling during hazard warning as well as direction mode.

Features

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.

TEMIC Semiconductors

📥 Download Datasheet

Datasheet Details

Part number	U644B
Manufacturer	TEMIC Semiconductors
File Size	202.44 KB
Description	Flasher/ 18-m Shunt/ Extremly Low Current Consumption
Datasheet	U644B Datasheet
Additional preview pages of the U644B datasheet.

📁 Similar Datasheet

U641B - INTERVAL AND WIPE/WASH WIPER CONTROL IC (ATMEL Corporation)
U642B - Interval- and Wipe/ Wash Wiper Control IC (ATMEL Corporation)
U643 - Flasher/ 30-mohm Shunt (ATMEL Corporation)
U6432B - Low-power Flasher IC with 18-mOMShunt (ATMEL Corporation)
U6433B - Frequency Doubling Disabling (ATMEL Corporation)
U643B - Flasher IC (ATMEL Corporation)

Other Datasheets by TEMIC Semiconductors

U644B-FP - Flasher/ 18-m Shunt/ Extremly Low Current Consumption
U642B - Automotive Wipe/Wash or Interval Switch
U6433B - Flasher/ 18-m Shunt/ Frequency Doubling Disabling

Full PDF Text Transcription

Click to expand full text

U644B Flasher, 18-mW Shunt, Extremly Low Current Consumption Description The bipolar integrated circuit, U644B, is used in relaycontrolled automotive flashers where a high level EMC is required. Lamp outage is indicated by frequency doubling during hazard warning as well as direction mode. If the flasher module provides an 4-pin connector the control pin of U644B (Pin 6) can be used to operate the IC in an extremly low-current mode.

Published: Apr 16, 2005 |