Advanced airbag IC for low/mid end applications

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  • The L9679P is an advanced airbag system chip solution targeted for mature airbag market and 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 (VCCat 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.

    Key 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
    • Boost regulator for PSI-5 SYNC pulse
      • 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
    • Buck regulator for micro controller unit
      • 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
    • Battery voltage monitor & shutdown control with Wake-up control
    • System voltage diagnostics with integrated ADC
    • Squib 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
    • High side safing switch regulator and enable control
    • Two channel remote sensor interface
      • 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

样片和购买

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max
L9679P
批量生产
1000 4.9 TQFP 100 14x14x1.0 Tray - - EAR99
MORE INFO

Country of Origin:

MALAYSIA

没有经销商,请联系我们的销售办事处
L9679PTR
批量生产
1000 4.9 TQFP 100 14x14x1.0 Tape And Reel - - EAR99
MORE INFO

Country of Origin:

MALAYSIA

查看供货情况

Distributor availability ofL9679PTR

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 100 1 Order Now

代理商库存报告日期: 2019-11-12

代理商名称

DIGIKEY

库存

100

Min.Order

1

地区

WORLDWIDE Order Now

代理商库存报告日期: 2019-11-12

L9679P

供货状态

批量生产

数量

1000

单价(US$)

4.9*

单价(US$)

4.9

封装

TQFP 100 14x14x1.0

包装类型

Tray

Operating Temperature (°C)

(min)

-

(max)

-

ECCN (US)

EAR99

Country of Origin

MALAYSIA

L9679PTR

供货状态

批量生产

数量

1000

单价(US$)

4.9*

Distributor availability ofL9679PTR

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 100 1 Order Now

代理商库存报告日期: 2019-11-12

代理商名称

DIGIKEY

库存

100

Min.Order

1

地区

WORLDWIDE Order Now

代理商库存报告日期: 2019-11-12

单价(US$)

4.9

封装

TQFP 100 14x14x1.0

包装类型

Tape And Reel

Operating Temperature (°C)

(min)

-

(max)

-

ECCN (US)

EAR99

Country of Origin

MALAYSIA

(*) 建议转售单价(美元)仅用于预算用途。如需以当地货币计价的报价,请联系您当地的 ST销售办事处 或我们的 经销商

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      Automotive advanced airbag IC for mid/high end applications

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产品型号 供货状态 封装 等级规格 符合RoHS级别 Material Declaration**
L9679P
批量生产
TQFP 100 14x14x1.0 汽车 Ecopack2
L9679PTR
批量生产
TQFP 100 14x14x1.0 汽车 Ecopack2

L9679P

Package:

TQFP 100 14x14x1.0

Material Declaration**:

PDF XML

Marketing Status

批量生产

Package

TQFP 100 14x14x1.0

Grade

Automotive

RoHS Compliance Grade

Ecopack2

L9679PTR

Package:

TQFP 100 14x14x1.0

Material Declaration**:

PDF XML

Marketing Status

批量生产

Package

TQFP 100 14x14x1.0

Grade

Automotive

RoHS Compliance Grade

Ecopack2

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.