CS2082 Datasheet, PDF (4/12 Pages) ON Semiconductor – Dual Airbag Deployment ASIC

CS2082
ELECTRICAL CHARACTERISTICS (continued) (4.75 V < V_CC < 5.25 V, 8.0 V < V_RES < 30 V, 9.0 V < V_BAT < 18 V,
–40°C < T_A < +85°C; unless otherwise stated.)
Parameter
Test Conditions
Min
Typ
Max
Thermal Shut Down
Time to Thermal Shutdown
R_SQUIB = 0, V_RX = 30 V, T = 85°C,
Guaranteed by Design
7.0
–
–
Squib Resistive Measurements V_CC = 5.0 V, R_MR = 49.9 W, V_RES = 30 V
Squib Differential Voltage
V_DIFF = SHx – SLx, R_SQUIB = 1.0 Ω to 10 Ω
46
53
60
Difference Between SHx & MR
current – SHx reference
I_SQUIB = 50 mA
–1.0
–
1.0
SHx Current Limit
SLx Current Limit
MR Voltage Clamp
R_SQUIB = 0
R_MR = 0
–
Turn On Delay Time excluding
–
external Capacitors
67
100
133
77
115
153
V_CC – 0.3
–
V_CC + 0.3
–
–
100
Turn off Delay Time
–
–
–
50
Short Measurements
V_CC = 5.0 V, V_RES . V_BAT, V_RX . V_BAT
SHx pull–up resistance to V_BAT
SLx pull–down resistance
V_BAT = 18 V
4.0
10
17
4.0
10
17
Pull–up resistor matching
–
–5.0
–
5.0
Pull–down resistor matching
–
–5.0
–
5.0
Short to V_BAT Trip
SHx short to Battery
SLx bit set to 1
0.73 × V_BAT 0.75 × V_BAT 0.77 × V_BAT
Short to GND Trip
SHx short to GND
SGx bit set to 1
0.23 × V_BAT 0.25 × V_BAT 0.27 × V_BAT
V_BAT Monitoring
V_BAT Low Trip
V_BAT High Trip
V_RES Monitoring
V_RES Low Trip
V_RES High Trip
V_RES Low Trip
V_RES High Trip
Safing Sensor Monitor
External Resistance Trip Range
V_CC = 5.0 V, External V_BAT Diode not included, V_RES = 30 V
BL bit set to 1 when below trip
7.5
BL bit set to 0 when above trip
8.0
V_CC = 5.0 V, V_BAT = 18 V
$6d AUX register b0 = 0
15.7
$6d AUX register b0 = 0
16.5
$6d AUX register b0 = 1
21.5
$6d AUX register b0 = 1
22.5
8.5
9.0
17.5
18.5
24.0
25
SSC bit set when resistance is less
30
400
9.5
10
19.3
20.5
26.5
27.5
600
Charge Pump and Monitor
Oscillator Frequency
Charge Pump charge time
V_CC = 5.0 V, V_BAT = 10 V
V_RES = 10 V
C_CHG = 0.1 µF, V_RES = 8.0 V,
Chrg from 8.0 V to 14 V
200
–
800
–
–
20
Charge Pump Low Voltage
CL bit set to 1 when below trip
14.5
16.0
17.5
Charge Pump High Voltage
CL bit set to 0 when above trip
15.0
17.5
18.0
Analog MUX
A_OUT Output Range
A_IN Input Range
V_CC = 5.0 V
–
–
0.1
–
V_CC – 0.1
0
–
V_CC
Unit
ms
mV
%
mA
mA
V
µs
µs
kΩ
kΩ
%
%
V
V
V
V
V
V
V
V
Ω
kHz
ms
V
V
V
V
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