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MC33797 Fiches technique(PDF) 6 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) 6 Page - Freescale Semiconductor, Inc

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Analog Integrated Circuit Device Data
6
Freescale Semiconductor
33797
STATIC ELECTRICAL CHARACTERISTICS
STATIC ELECTRICAL CHARACTERISTICS
Table 3. Static Electrical Characteristics
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
INPUT VOLTAGE (VDD)
Input Voltage
VDD
4.57
5.0
5.25
V
FET DRIVERS
Leakage Current at Minimum High Side Driver Breakdown Voltage
IDHSD
–39
100
µA
Leakage Current at Minimum Low Side Driver Breakdown Voltage
IDLSD
–65
100
µA
High-Side Driver Current Limit Range Set via Rlimit Resistor with Low
Battery Condition
tON ≤ 4.0 ms, RR_LIMIT_X = 10 kΩ, 5.0 V ≤ VVFIRE ≤ 7.0 V, RSQUIB =
2.0
IHS(LBAT)
1.09
1.4
2.9
A
High-Side Driver Low Current Limit Range Set via Rlimit Resistor
tON ≤ 2.6 ms, RR_LIMIT_X = RL=4.32 kΩ, 7.0 V ≤ VVFIRE ≤ 35 V
IHS(LOSET)
0.81
0.93
1.03
A
High-Side Driver Nominal Current Limit Range Set via Rlimit Resistor
tON ≤ 2.6 ms, RR_LIMIT_X = RL=10 kΩ, 7.0 V ≤ VVFIRE ≤ 35 V
IHS(NOM)
1.21
1.4
1.54
A
High-Side Driver High Current Limit Range Set via Rlimit Resistor
tON ≤ 0.8 ms, RR_LIMIT_X = RL=45.3 kΩ, 7.0 V ≤ VVFIRE ≤ 35 V
IHS(HISET)
1.76
2.0
2.24
A
Low-Side Drivers Current Limit
7.0 V
= SQLO < 16 V
SQLO = 16 V
ILS
2.1
2.24
2.47
2.65
3.0
3.14
A
High-Side Driver Current Limit Detect Threshold (8)
7.0 V
≤ VVFIRE ≤ 35 V
IMEAS
IHS x0.85
IHS x1.0
A
Driver ON Resistance (per FET)
VVFIRE = 5.0 V, ILOAD = 0.5 A
RDS(ON)
––
1.0
VDD Operating Current
Standby (Diagnostics off, SPI “OFF”)
No Fire—Worst Case Diagnostics ($83/$2F Command Active)
Firing (with All FET Drivers “ON”)
IDD
2.0
15
4.3
5.0
17.5
6.0
mA
VFIRE Quiescent Current (9)
With Diagnostics Off
IRRE
22
34
55
µA
VDIAG Current During Squib Diagnostics
With Squib Resistance Diagnostics Active
IRRE
32
37
43
mA
VFIRE Operating Current During Firing
Excluding Firing Current, IHS = 2.0 A
IRRE
–1.8
10
mA
VDIAG Operating Current During Firing
Per VDIAG terminal, excluding Firing Current, IHS = 2.0 A
IRRE
140
200
µA
Notes
8.
Guaranteed by design
9.
VFIRE quiescent current includes any leakage current through squib.


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