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MC33797 Fiches technique(PDF) 4 Page - Freescale Semiconductor, Inc

No de pièce MC33797
Description  Four Channel Squib Driver IC
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Fabricant  FREESCALE [Freescale Semiconductor, Inc]
Site Internet  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

MC33797 Fiches technique(HTML) 4 Page - Freescale Semiconductor, Inc

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Analog Integrated Circuit Device Data
4
Freescale Semiconductor
33797
TERMINAL CONNECTIONS
15
SENSE_1B
Input
Squib Sense 1B
Used during standard applications involving a four-channel
squib driver IC and during cross-coupling applications involving
two four-channel squib driver ICs (squib driver IC #1 and squib
driver IC #2).
16
SQB_LO_1B
Output
Squib Lo 1B
Drain of the low-side switch that connects to the low terminal of
Squib_1B
17
SQB_LO_2B
Output
Squib Lo 2B
Drain of the low-side switch that connects to the low terminal of
Squib_2B
18
SENSE_2B
Input
Squib Sense 2B
Used during standard applications involving a four-channel
squib driver IC and during cross-coupling applications involving
two four-channel squib driver ICs (squib driver IC #1 and squib
driver IC #2).
19
R_LIMIT_2
Output
Limit Resistor - 2A
and 2B
External resistor to ground is used to set current limit for
Squib_2A and squib_2B FET drivers.
20
FEN_2
Input
FET Driver 2A
and 2B
Active high input signal to enable operation of the squib_2A and
Squib_2B FET drivers.
21
SQB_HI_2B
Output
Squib Hi 2B
Drain of the high-side switch that connects to the low terminal of
Squib_2B.
22
VFIRE_2B
Supply
Squib Firing Supply
2B
Firing supply terminal for squib_2B.
23
R_DIAG
Input
Limit Resistor -
Diagnostic
External resistor to ground is used to set the diagnostic current
for squib resistance.
24
VFIRE_RTN
Ground
Squib Fire Power
Ground
Power Ground for squibs 1A, 1B, 2A, and 2B
25
VFIRE_RTN
Ground
Squib Fire Power
Ground
Power Ground for squibs 1A, 1B, 2A, and 2B
26
VDIAG_2
Supply
Squib Diagnostic 2A
and 2b
Diagnostic terminal for high-side safing sensor for squibs 2A
and 2B and the VFIRE supply voltage.
27
VFIRE_2A
Supply
Squib Firing Supply
2A
Firing supply terminal for squib_ 2A
28
SQB_HI_2A
Output
Squib Hi 2A
Drain of the high-side switch that connects to the low terminal of
Squib_2A
29
RST
Input
Reset
Reset, Active Low
30
CS
Input
Chip Select
Chip Select for SPI interface, Active Low
31
SENSE_2A
Input
Squib Sense 2A
Used during standard applications involving a four-channel
squib driver IC or during cross-coupling applications involving
two four-channel squib driver ICs (squib driver IC #1 and squib
driver IC #2).
32
SQB_LO_2A
Output
Squib Lo 2A
Drain of the low-side switch that connects to the low terminal of
Squib_2A
Table 1. Terminal Function Description (continued)
Terminal
Terminal
Name
Terminal Function
Formal Name
Terminal Description


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