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MC33797 Fiches technique(PDF) 9 Page - Freescale Semiconductor, Inc

No de pièce MC33797
Description  Four Channel Squib Driver IC
Download  32 Pages
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Fabricant  FREESCALE [Freescale Semiconductor, Inc]
Site Internet  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

MC33797 Fiches technique(HTML) 9 Page - Freescale Semiconductor, Inc

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Analog Integrated Circuit Device Data
Freescale Semiconductor
9
33797
STATIC ELECTRICAL CHARACTERISTICS
Voltage Threshold for SQB_LO or SQB_HI Shorted to Ground with an Open
Squib using $C3 Command
RSQUIB = Open
VTHSG_SO
1.3
1.8
2.0
V
DIAGNOSTICS FOR SQUIB CONTINUITY BETWEEN SENSE_XX AND SQB_LO_XX ($C2 COMMAND)
Current Threshold for SQUIB_LO_1A, 1B, 2A, and 2B Continuity Check for
Standard and Cross-coupled Conditions ($C2) SQUIB_LO_XXCONT (16)
7.0 V
≤ VVDIAG_X ≤ 35 V
ITHSQB CON
150
350
mA
DIAGNOSTICS FOR SQUIB SHORT BETWEEN FIRING LOOPS ($E0–$E3, $E8 COMMANDS)
Voltage Threshold for Standard Squib Connection
7.0 V
≤ VVDIAG_X ≤ 35 V
VTHSQBNOM
1.0
1.4
2.0
V
Voltage Threshold for SQUIB_X Shorted to SQUIB_Y (1 or More Shorted
Conditions)
Short Between Squib Lines (Loops) (SQUIB_XX_SSQB_YY) (17)
VTHSSQB
1.0
1.4
2.0
V
VDIAG SUPPLY DIAGNOSTICS ($C0 COMMAND)
VDIAG Supply Voltage High Threshold
VDHI
15
17
18.3
V
VDIAG Supply Voltage Low Threshold
VDLO
5.7
6.5
7.0
V
VFIRE SUPPLY DIAGNOSTICS VFIRE_1B AND VFIRE_2B ($C5 COMMAND)
VFIRE Supply Voltage High Threshold
VFDHI
15
17
18.3
V
VFIRE Supply Voltage Low Threshold
VFLO
5.7
6.5
7.0
V
VDIAG SUPPLY DIAGNOSTICS VDIAG_1 AND VDIAG_2 (ADDITIONAL VOLTAGE THRESHOLDS) ($C5 COMMAND)
VDIAG Supply Voltage Threshold 4
VVDIAG_X V4
30.2
32.8
36.2
V
VDIAG Supply Voltage Threshold 3
VVDIAG_X V3
25.5
27.7
30.2
V
VDIAG Supply Voltage Threshold 2
VVDIAG_X V2
20.5
22.6
25.5
V
VDIAG Supply Voltage Threshold 1
VVDIAG_X V1
16
18.4
20.5
V
VFIRE_RTN DIAGNOSTICS ($C9 COMMAND)
R_RTN1 Short-to-Ground Threshold (Open Ground Connection)
RRTN1
0.15
0.6
R_RTN2 Short-to-Ground Threshold (Open Ground Connection)
RRTN2
0.15
0.6
HIGH-SIDE SAFING SENSOR DIAGNOSTICS ($C0 COMMAND)
R_HS Valid Resistor Range
15 V
≤ VVDIAG_X ≤ 35 V
RHS
4.1
5.1
6.1
k
R_HS Open Threshold
15 V
≤ VVDIAG_X ≤ 35 V
RHSO
6.1
7.2
9.0
k
Notes
16.
XX = 1A, 1B, 2A, or 2B
17.
XX and YY = 1A, 1B, 2A, or 2B
Table 3. Static Electrical Characteristics (continued)
Characteristics noted under conditions 4.75 V VDD 5.25 V; 7.0 V VVFIRE_XX 35 V; VVDIAG_X = VVFIRE_XX; FEN 1 = FEN 2
= VDD; RR_LIMIT_X =10kΩ ±1%, RR_DIAG = 10 kΩ ±1%, -40°C TA +85°C, GND = 0 unless otherwise noted. Typical values
noted reflect the approximate parameter means at TA = 25°C under nominal conditions unless otherwise noted.
Characteristic
Symbol
Min
Typ
Max
Unit


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