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TMUX7462F Fiches technique(PDF) 22 Page - Texas Instruments

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No de pièce TMUX7462F
Description  TMUX7462F 짹60 V Fault-Protected, Latch-Up Immune, Quad Channel Protector with Adjustable Fault Threshold and 1.8-V Logic
PDF  37 Pages
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Fabricant  TI [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI - Texas Instruments

TMUX7462F Fiches technique(HTML) 22 Page - Texas Instruments

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7.6 Fault Flag Response Time
Fault flag response time (tRESPONSE(FLAG)) measures the delay between the source voltage exceeding the fault
supply voltage (VFP or VFN) by 0.5 V and the general fault flag (FF) pin to go below 10% of its original value.
Figure 7-7 shows the setup used to measure tRESPONSE(FLAG).
VS
0 V
tRESPONSE(FLAG)_FP
VFF
VFP + 0.5 V
0 V
0.5 V
VS
0 V
tRESPONSE(FLAG)_FN
VFN - 0.5 V
tRESPONSE(FLAG) = max ( tRESPONSE(FLAG)_FP, tRESPONSE(FLAG)_FN)
5 V
VFF
0.5 V
5 V
0 V
CL_FF
GND
RPU
5V
GND
RL
VS
GND
CL
GND
Sx
GND
GND
Dx
All other
source &
drain pins
SW
FF
VDD VSS
VFP VFN
VDD
VSS
0.1 µF
GND
0.1 µF
GND
0.1 µF
GND
VFN
0.1 µF
GND
VFP
Figure 7-7. Fault Flag Response Time Measurement Setup
7.7 Fault Flag Recovery Time
Fault flag recovery time (tRECOVERY(FLAG)) measures the delay between the source voltage falling from the
overvoltage condition to below the fault supply voltage (VFP or VFN) plus 0.5 V and the general fault flag (FF) pin
to rise above 3 V with 5 V external pull-up. Figure 7-8 shows the setup used to measure tRECOVERY(FLAG).
tRECOVERY(FLAG)_FP
0 V
3 V
tRECOVERY(FLAG)_FN
tRECOVERY(FLAG) = max ( tRECOVERY(FLAG)_FP, tRECOVERY(FLAG)_FN)
5 V
0 V
3 V
5 V
VFP + 0.5 V
0 V
VFN - 0.5 V
0 V
VS
CL_FF
GND
RPU
5V
GND
RL
GND
CL
GND
Sx
GND
GND
Dx
All other
source &
drain pins
SW
FF
VDD VSS
VFP VFN
VDD
VSS
0.1 µF
GND
0.1 µF
GND
0.1 µF
GND
VFN
0.1 µF
GND
VFP
VS
VFF
VFF
VS
Figure 7-8. Fault Flag Recovery Time Measurement Setup
TMUX7462F
SCDS394A – MARCH 2021 – REVISED OCTOBER 2021
www.ti.com
22
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