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PDF U2043B Data sheet ( Hoja de datos )
| Número de pieza | U2043B | |
| Descripción | Pilot Lamp to GND or VBatt | |
| Fabricantes | ATMEL Corporation | |
| Logotipo |  |
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Features
• Temperature and Voltage Compensated Frequency
• Warning Indication of Lamp Failure by Means of Frequency Doubling
• Minimum Lamp Load for Flasher Operation ≥ 10W
• Relay Output with High Current Carrying Capacity and Low Saturation
Voltage
• Low Susceptibility to EMI
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1. 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. The pilot lamp can be connected either to
VBatt or GND.
Figure 1-1. Block Diagram
C1
4
6
Measuring comparator
K 1 V 6-81 mV
2
7
R3 30 m Ω
Shunt
+VS
+ 49
Pilot lamp 5 W
Pulse
R1 generator
3.8 k Ω
K 3 V 6-5 V
5
49 a-Comparator
23 V
IC Ground
3
Relay
8 R2
3.3 k Ω
1 R1
100 Ω
GND
- 31
49 a
5 W 21 W 21 W
21 W 21 W 5 W
Indicator lamps
Pilot lamps
Flasher, 30 mΩ
Shunt, Pilot
Lamp to GND or
VBatt
U2043B
Rev. 4720B–AUTO–09/05
1 page  
U2043B
4. Absolute Maximum Ratings
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress rating
only and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of this
specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
Reference point: pin 1
Parameters
Symbol
Value
Unit
Supply voltage, pins 2 and pin 6
Surge forward current
tp = 0.1 ms
tp = 2 ms
tp = 2 ms
www.DataOSuhtepeut4t Ucu.croremnt, pin 3
Power Dissipation
VS
IFSM
IFSM
IFSM
IO
16.5
1.5
1.0
50
0.3
V
A
A
mA
A
Tamb = 95°C, DIP8
SO8
Tamb = 60°C, DIP8
SO8
Junction temperature
Ambient temperature range
Storage temperature range
Ptot
Ptot
Ptot
Ptot
Tj
Tamb
Tstg
420
340
690
560
150
–40 to +95
–55 to +150
mW
mW
mW
mW
°C
°C
°C
5. Thermal Resistance
Parameters
Junction ambient, DIP8
Junction ambient, SO8
Symbol
RthJA
RthJA
Value
110
160
Unit
K/W
K/W
4720B–AUTO–09/05
5
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet U2043B.PDF ] | |
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