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U643B

Features: ` Temperature and supply voltage compensatedflashing frequency` Frequency doubling indicates lamp outage` Relay driver output with high current carrying capacity and low saturation voltage` Minimum lamp load for flasher operation:1 W` Very low susceptibility to EMI` Protection according ...

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SeekIC No. : 004535025 Detail

U643B: Features: ` Temperature and supply voltage compensatedflashing frequency` Frequency doubling indicates lamp outage` Relay driver output with high current carrying capacity and low saturation voltage...

U643B Data Sheet

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Part Number:
U643B
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/11/6

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Product Details

Description



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:1 W
` Very low susceptibility to EMI
` Protection according to ISO/TR 7637/1 level 4


Pinout

Connection Diagram


Specifications

Reference point Pin 1
Parameters
Symbol
Value
Unit
Supply voltage                      Pins 2 and 6
VS
18
V
Surge forward current tp = 0.1 ms Pins 2 and 6
                                   tp = 300 ms Pins 2 and 6
                                   tP = 300 ms Pin 8
IFSM
IFSM
IFSM
1.5
1.0
30.0
A
A
mA
Output current           Pin 3
IO
0.3
A
Power dissipation       Tamb = 95 DIP 8
                                                        SO 8
                                   Tamb = 60 DIP 8
                                                        SO 8
Ptot
Ptot
Ptot
Ptot
420
340
690
560
mW
mW
mW
mW
Junction temperature
Tj
150
Ambient temperature range
Tamb
-40to+95
Storage temperature range
Tstg
-55to+150



Description

The bipolar integrated circuit U643B is used in relaycontrolled automotive flashers where a high-level EMC is required.

Lamp outage of U643B is indicated by frequency doubling during hazard warning as well as direction mode.




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