TPIC71002-Q1 Datasheet, PDF (1/8 Pages) Texas Instruments – Dual Channel Squib Drivers

TPIC71002-Q1
www.ti.com
Dual Channel Squib Drivers
Check for Samples: TPIC71002-Q1
SLIS139 – MARCH 2011
FEATURES
1
• Two-Channel Squib Drivers For Airbag
Application
• Loop Diagnostics Monitor and Reporting
• Two Logic Inputs Providing Independent
Safety Logic for Enabling/Disabling
Deployment
• Two Independent Thermally Protected
High-Side Drivers that Can Source Deployment
or Diagnostic Current Level to Each Squib
Load
• Two Independent Avalanche Voltage and
Thermally Protected Low-Side Drivers that can
Sink Deployment or Diagnostic Current Level
from Each Squib Load
• Each Output Capable of 1.2 A/1.75 A Firing
Current for Typical 2 ms/0.5 ms
• SPI Slave Interface for Serial Bus
Communication with Parity Check
• Firing VZx Voltage Range 10V to 35V,
Transients up to 40 V
• Programmable Firing Time up to 8.2 ms
• Common Load Current Settings for All
Deployment Loops, Using Registers
• Individual Firing Current Timer Limit Set for
Each Deployment Loop, Using Registers
• Firing Current Timer to Monitor Firing Current
Over Deployment Time for Each Deployment
Loop
• Independent Switch Control for Both High-
And Low-Side Switches
• Diagnostic Mode for Fault Checking
• Internal Fault Monitoring for Safe Operation
• Multiplexable Output Buffer for Analog Voltage
Measurements
• Use of External Clamping Devices on Squib
Pins is Not Required to Protect the
Deployment ASIC Against Substrate Injection
Effects During Deployment Due to Dynamic
Shorts to Ground
• External Pin Connection to the Microprocessor
ADC Supply for Ratio-Metric Squib Resistance
Measurement
• 40-V Pin Capability on All Pins (Except GNDx,
AGND, DGND, V_CC5, V_DDIO, AMX_OUT)
• Operating Ambient Temperature Range: –40°C
to 105°C
• Thermally Enhanced 48-Pin TSSOP DCA
PowerPad™ Package
APPLICATIONS
• Squib Drivers for Airbag Application
NC 1
NC 2
NC 3
NC 4
NC 5
NC 6
TEST1 7
VCC5 8
IWD 9
AMX_OUT 10
DGND1 11
AGND1 12
SQREF1 13
SQREF2 ¹⁴
VADC ¹⁵
TEST2 ¹⁶
VA2 ¹⁷
TEST3 ¹⁸
GND1 19
ZM1 20
Z1 21
VZ1 22
NC 23
NC 24
DIAG
SPI/
Digital
BIAS
48 NC
47 NC
46 VZ3
45 Z3
44 NC
43 NC
42 DGND2
41 SOMI
40 SIMO
39 SCLK
38 CS_N
37 TZ
36 RESET_N
35 _VDDIO
34 _AGND
33 _VA1
32 TEST4
31 NC
30 GND2
29 ZM2
28 Z2
27 VZ2
26 NC
25 NC
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Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2011, Texas Instruments Incorporated