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TLE7243SL Datasheet(PDF) 12 Page - Infineon Technologies AG

No. de pieza TLE7243SL
Descripción Electrónicos  8 Channel Protected Low-Side Relay Switch
PDF  28 Pages
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Fabricante Electrónico  INFINEON [Infineon Technologies AG]
Página de inicio  http://www.infineon.com
Logo INFINEON - Infineon Technologies AG

TLE7243SL Datasheet(HTML) 12 Page - Infineon Technologies AG

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SPI Driver for Enhanced Relay Control
SPIDER - TLE7243SL
Input and Power Stages
Datasheet
12
Rev. 1.0, 2009-09-30
Figure 4
Input matrix and logic
The current sink to ground ensures that the channels switch off in case of open input pin. The zener diode protects
the input circuit against ESD pulses. After power-on reset, the device enters idle mode (all channel OFF).
5.2.1
Inductive Output Clamp
When switching off inductive loads, the potential at pin OUT rises to VDS(CL) potential, because the inductance
intends to continue driving the current. The voltage clamping is necessary to prevent destruction of the device,
see Figure 5 for details. Nevertheless, the maximum allowed load inductance is limited.
InputLogic.emf
IIN 3
IN3
IIN 2
IN2
I
IN 1
IN1
Channel 8
LHI
IN8
OFF
OFF
OFF
Channel 7
LHI
IN7
OFF
OFF
OFF
Channel 6
LHI
IN6
OFF
OFF
OFF
Channel 5
LHI
IN5
OFF
OFF
OFF
Channel 2
LHI
IN2
OFF
OFF
Channel 3
LHI
IN3
OFF
OFF
Channel 4
LHI
IN4
OFF
OFF
IIN 4
IN4
Channel 1
LHI
IN1
OFF
IN1
IN2
IN3
IN4
ON
ON
ON
ON
OFF
ON
ON
ON
ON
ILHI
LHI
LHI



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