概述
样片和购买
解决方案
资源
工具与软件
质量与可靠性
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Partner products
Sales Briefcase
  • 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.

    主要特性

    • 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

适合您的资源

00 选择要下载的文档

技术文档

    • 描述 版本 文档大小 操作
      DS11627
      Automotive advanced airbag IC for mid/high end applications
      2.0
      2.89 MB
      PDF
      DS11627

      Automotive advanced airbag IC for mid/high end applications

    • 描述 版本 文档大小 操作
      AN4437
      L9678 user configurable airbag
      3.0
      4.03 MB
      PDF
      AN4437

      L9678 user configurable airbag

质量与可靠性

产品型号 Marketing Status 封装 等级规格 符合RoHS级别 材料声明**
L9679P
批量生产
TQFP 100 14x14x1.0 汽车应用 Ecopack2
L9679PTR
批量生产
TQFP 100 14x14x1.0 汽车应用 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

(**) st.com上提供的材料声明表单可能是基于包装系列中最常用的封装的通用文档。因此,它们可能不是100%适用于特定的设备。有关特定设备的信息,请联系 销售支持

样片和购买

产品型号
从分销商订购
从ST订购
供货状态
ECCN (US)
ECCN (EU)
包装类型
封装
温度(ºC) Country of Origin
Budgetary Price (US$)*/Qty
最小值
最大值
L9679P 没有经销商,请联系我们的销售办事处
批量生产
EAR99 NEC Tray TQFP 100 14x14x1.0 - - MALAYSIA 4.9 / 1k
L9679PTR Available at 1 distributors

...的经销商可用性L9679PTR

代理商名称
地区 库存 最小订购量 第三方链接
DIGIKEY WORLDWIDE 100 1 马上订购

代理商库存报告日期: 2020-08-01

代理商名称

DIGIKEY

库存

100

Min.Order

1

地区

WORLDWIDE 马上订购

代理商库存报告日期: 2020-08-01

批量生产
EAR99 NEC Tape And Reel TQFP 100 14x14x1.0 - - MALAYSIA 4.9 / 1k

L9679P

供货状态

批量生产

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

4.9 / 1k

ECCN (EU)

NEC

包装类型

Tray

封装

TQFP 100 14x14x1.0

Operating Temperature (°C)

(最小值)

-

(最大值)

-

Budgetary Price (US$)* / Qty

4.9 / 1k

Country of Origin

MALAYSIA

L9679PTR

供货状态

批量生产

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

4.9 / 1k

...的经销商可用性L9679PTR

代理商名称
地区 库存 最小订购量 第三方链接
DIGIKEY WORLDWIDE 100 1 马上订购

代理商库存报告日期: 2020-08-01

代理商名称

DIGIKEY

库存

100

Min.Order

1

地区

WORLDWIDE 马上订购

代理商库存报告日期: 2020-08-01

ECCN (EU)

NEC

包装类型

Tape And Reel

封装

TQFP 100 14x14x1.0

Operating Temperature (°C)

(最小值)

-

(最大值)

-

Budgetary Price (US$)* / Qty

4.9 / 1k

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