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U2043B-FP Datasheet

Flasher/ 30-mohm Shunt/ Pilot Lamp to GND or V Batt

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U2043B
WFlasher, 30-m Shunt, Pilot Lamp to GND or VBatt
Description
The integrated circuit U2043B is used in relay controlled
automotive flashers where a high EMC level is required.
A lamp outage is indicated by frequency doubling during
hazard mode as well as direction mode. Pilot lamp can be
connected either to VBatt or GND.
Features
D Temperature and voltage compensated frequency
D Warning indication of lamp failure by means of
frequency doubling
wD Minimum lamp load for flasher operation 10 W
D Relay output with high current carrying capacity and
low saturation voltage
D Low susceptibility to EMI
Ordering Information
Extended Type Number
U2043B
U2043B–FP
Package
DIP8
SO8
Remarks
Block Diagram
C1
4
6
Measuring comparator
K1 V6–81 mV
2
7
WR3 30 m
Shunt
+ VS
+ 49
Pilot lamp 5 W
Pulse
R1 generator
3.8 k W
5 K3 V6–5 V
49 a–Comparator
3
Relay
8 R2
3.3 k W
23 V
1 R1
IC Ground
100 W
13283
GND
– 31
Figure 1.
49 a
5 W 21 W 21 W 21 W 21 W 5 W
Indicator lamps
Pilot lamps
TELEFUNKEN Semiconductors
Rev. A2, 25-Feb-97
1 (6)
TEMIC Semiconductors
TEMIC Semiconductors



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