
-
L9679PTR
- For Product Pricing Customization Or Other Inquiries
- Contact Now
- Technical Documents
- Download Datasheet
Request Information For L9679PTR












L9679PTR Overview
The L9679P is a chip that can be used in advanced airbag systems for mature airbag markets or in cut-off battery systems for integrated safety markets. This device is family compatible with the L9678 and L9680 devices. Safety system integration is enabled through higher power supply currents and integrated PSI-5 satellite interface.
High frequency power supply design allows further cost reduction by using smaller and less expensive external components. All switching regulators operate at 1.882 MHz while buck converters have integrated synchronous rectifiers.
Additional attention is given to system integrity and diagnostics. The reserve capacitor is electrically isolated from the boost regulator by a 50 mA nominal fixed current source, controlling in-rush an additional capacitor discharge fixed current source is integrated to diagnose the reserve capacitor value and ESR. The same current sources can be used to discharge the capacitor at shutdown.
Thanks to low quiescent current, the device can be directly connected to battery. In this way, the device start-up and shutdown are controlled through the wake-up input function. The power supply and crossover function are controlled automatically through the internal state machine.
The user can select both ECU logic voltage (VCC at 3.3 V or 5.0 V) and energy reserve output voltage (at either 23 V or 33 V). Deployment voltage is set to a maximum of 25 V for all profiles and can be controlled through external safing switch circuit using the high side safing switch reference enabled through the system SPI interface or the arming logic.
Features
- AEC-Q100 qualified
- Boost regulator for energy reserve
- 1.882 MHz operation, Iload = 55 mA max
- Output voltage user selectable, 23 V/ 33 V ±5%
- Capacitor value & ESR diagnostics
- 1.882 MHz operation, Iload = 55 mA max
- Output voltage user selectable, 23 V/ 33 V ±5%
- Capacitor value & ESR diagnostics
- Boost regulator for PSI-5 SYNC pulse
- 1.882 MHz operation,
- Output voltage, 12 V/14.75 V, user configurable
- 1.882 MHz operation,
- Output voltage, 12 V/14.75 V, user configurable
- Buck regulator for remote sensor
- 1.882 MHz operation
- Output voltage, 7.2 V/9 V ±4%, user configurable
- 1.882 MHz operation
- Output voltage, 7.2 V/9 V ±4%, user configurable
- Buck regulator for micro controller unit
- 1.882 MHz operation
- Output voltage user selectable, 3.3 V or 5.0 V ±3%
- 1.882 MHz operation
- Output voltage user selectable, 3.3 V or 5.0 V ±3%
- Integrated energy reserve crossover switch
- 3 Ω - 912 mA max
- Switch active output indicator
- 3 Ω - 912 mA max
- Switch active output indicator
- Battery voltage monitor & shutdown control with Wake-up control
- System voltage diagnostics with integrated ADC
- Squib/pyroswitch deployment drivers
- 8 channel HSD/LSD
- 25 V max deployment voltage
- Various deployment profiles
- Current monitoring
- Rmeasure, STB, STG & Leakage diagnostics
- High & low side driver FET tests
- 8 channel HSD/LSD
- 25 V max deployment voltage
- Various deployment profiles
- Current monitoring
- Rmeasure, STB, STG & Leakage diagnostics
- High & low side driver FET tests
- High side safing switch regulator and enable control
- Two channel remote sensor interface
- PSI-5 satellite sensors
- PSI-5 satellite sensors
- Three channel GPO, HSD or LSD configurable, with PWM 0-100% control
- Nine channel hall-effect, resistive or switch sensor interface
- User customizable safing logic
- Specific disarm signal for passenger airbag
- Temporal and algorithmic Watchdog timers
- End of life disposal interface
- Temperature sensor
- 32 bit SPI communications
- 5.5 V minimum operating voltage at device battery pin
- Operating temperature, -40 to 95 °C
- Packaging - 100 pin
Product Parameters
-
prmis_id
CP467164
-
item_name
L9679PTR
-
p_445
-
p_1387
6.83
-
p_4418
1000
-
parent_id
PF263694
-
p_4906
false
-
p_5113
0
-
p_163
Active
Technical Documents
-
AN5759 L9679P Cut-off Battery and Pyro FuseDetails>>
Other distributor's price
Distributor | Part # | Mfg. | Description | Price |
---|---|---|---|---|
![]() |
L9679PTR | STMicroelectronics | IC INTERFACE SPECIALIZED 100TQFP |
1---$11.7700 10---$10.6290 25---$10.1348 100---$8.8000 250---$8.4045 500---$7.6630 |
![]() |
L9679PTR | STMicroelectronics | Power Management Specialized - PMIC Automotive advanced airbag IC for mid/high end applications |
540---$7.6700 |
![]() |
L9679PTR | STMicroelectronics |
1000---$8.4800 |
|
![]() |
L9679PTR | STMicroelectronics | Asic |Stmicroelectronics L9679PTR |
1---$11.7700 |
![]() |
L9679PTR | STMicroelectronics | Automotive advanced airbag IC for mid/high end applications 100-Pin TQFP EP T/R - Tape and Reel (Alt: L9679PTR) |
1000---$6.2964 2000---$6.1692 4000---$6.0420 6000---$5.9148 8000---$5.7876 10000---$5.6604 100000---$5.5332 |
Associated Products
-
L9369-TR
ST
Automotive voltage monitor with watchdog timer
-
L9679E
ST
Automotive voltage monitor with watchdog timer
-
XC228796F80LACKXUMA1
infineon
Automotive voltage monitor with watchdog timer
-
L9680
ST
Automotive voltage monitor with watchdog timer
-
L9370TR
ST
Automotive voltage monitor with watchdog timer
-
L9659
ST
Automotive voltage monitor with watchdog timer
Blogs
- How to Reset a Mass Air Flow Sensor
- How to Test an IGBT Using A Multimeter
- How to Reset a Nox Sensor
- How to Test Crankshaft Sensor with Multimeter
- How to Delete O2 Sensors from ECM
- ESP32 vs. STM32
- Difference Between BJT, MOSFET and IGBT: BJT vs MOSFET vs IGBT
- IGBT Symbol Diagram, Characteristics, Circuit
- How to Reset a Coolant Temperature Sensor
- CMOS vs BSI Sensor