33797_11 Datasheet, PDF (7/35 Pages) Freescale Semiconductor, Inc – Four Channel Squib Driver IC

ELECTRICAL CHARACTERISTICS
STATIC ELECTRICAL CHARACTERISTICS
STATIC ELECTRICAL CHARACTERISTICS
Table 3. Static Electrical Characteristics
Characteristics noted under conditions 4.75 V ≤ V_DD ≤ 5.25 V; 7.0 V ≤ V_{VFIRE_XX} ≤ 35 V; V_{VDIAG_X} = V_{VFIRE_XX};
FEN 1 = FEN 2 = V_DD; R_{R_LIMIT_X} = 10 kΩ ±1%, R_{R_DIAG} = 10 kΩ ±1%, -40 °C ≤ T_A ≤ +85 °C, GND = 0, unless otherwise noted.
Typical values noted reflect the approximate parameter means at T_{A =} 25°C under nominal conditions, unless otherwise noted.
Characteristic
Symbol
Min
Typ
Max
Unit
INPUT VOLTAGE (VDD)
Input Voltage
FET DRIVERS
V_DD
4.75
5.0
5.25
V
Leakage Current at Minimum High Side Driver Breakdown Voltage
Leakage Current at Minimum Low Side Driver Breakdown Voltage
High Side Driver Current Limit Range Set via Rlimit Resistor with Low
Battery Condition
t_ON ≤ 4.0 ms, R_{R_LIMIT_X} = 10 kΩ, 5.0 V ≤ V_VFIRE ≤ 7.0 V,
R_SQUIB = 2.0 Ω
I_DHSD
–
39
I_DLSD
–
65
I_HS(LBAT)
1.09
1.4
100
µA
100
µA
A
2.9
High Side Driver Low Current Limit Range Set via Rlimit Resistor
t_ON ≤ 2.6 ms, R_{R_LIMIT_X} = R_L=4.32 kΩ, 7.0 V ≤ V_VFIRE ≤ 35 V
I_HS(LOSET)
0.81
0.93
A
1.03
High Side Driver Nominal Current Limit Range Set via Rlimit Resistor
t_ON ≤ 2.6 ms, R_{R_LIMIT_X} = R_L=10 kΩ, 7.0 V ≤ V_VFIRE ≤ 35 V
I_HS(NOM)
A
1.21
1.4
1.54
High Side Driver High Current Limit Range Set via Rlimit Resistor
t_ON ≤ 0.8 ms, R_{R_LIMIT_X} = R_L=45.3 kΩ, 7.0 V ≤ V_VFIRE ≤ 35 V
I_HS(HISET)
A
1.76
2.0
2.24
Low Side Drivers Current Limit
7.0 V = SQLO < 16 V
SQLO = 16 V
High Side Driver Current Limit Detect Threshold ⁽⁷⁾
7.0 V ≤ V_VFIRE ≤ 35 V
Driver ON Resistance (per FET)
V_VFIRE = 5.0 V, I_LOAD = 0.5 A
I_LS
I_MEAS
R_DS(ON)
2.1
2.24
I_HS x 0.85
–
2.47
2.65
–
–
A
3.0
3.14
A
I_HS x 1.0
Ω
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”)
VFIRE Quiescent Current ⁽⁸⁾
With Diagnostics Off
I_DD
I_RRE
mA
–
2.0
5.0
–
15
18.5
–
4.3
6.0
µA
22
34
55
VDIAG Current During Squib Diagnostics
With Squib Resistance Diagnostics Active
I_RRE
mA
32
37
43
VFIRE Operating Current During Firing
Excluding Firing Current, I_HS = 2.0 A
I_RRE
mA
–
1.8
11
VDIAG Operating Current During Firing
Per V_DIAG pin, excluding Firing Current, I_HS = 2.0 A
I_RRE
µA
–
140
200
Notes
7 Guaranteed by design
8 VFIRE quiescent current includes any leakage current through squib.
Analog Integrated Circuit Device Data
Freescale Semiconductor
33797
7