L9680

量産中
Design Win Education

Automotive advanced airbag IC for mid/high end applications

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製品概要

概要

The L9680 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 L9679 devices. Safety system integration is enabled through higher power supply currents and integrated active wheel speed sensor interface. The active wheel speed interface is shared with the PSI-5 satellite interface to create a generic remote safety sensor interface compliant to both systems.

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 ER capacitor is electrically isolated from the boost regulator by a fixed charge current circuit to control in-rush current. An additional discharge current circuit is integrated in the IC to measure the capacitance and the ESR of ER capacitor. 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.

  • 特徴

    • AEC-Q100 qualified
    • Boost regulator for energy reserve
      • 1.882 MHz operation, Iload = 70 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/pyroswitch deployment drivers
      • 12-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
    • Four-channel remote sensor interface
      • PSI-5 satellite sensors
      • Active wheel speed 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 pins

EDAシンボル / フットプリント / 3Dモデル

STMicroelectronics - L9680

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品質 & 信頼性

製品型番 マーケティング・ステータス パッケージ グレード RoHSコンプライアンスグレード 材料宣誓書**
L9680
量産中
TQFP 100 14x14x1.0 オートモーティブ Ecopack2
L9680TR
量産中
TQFP 100 14x14x1.0 オートモーティブ Ecopack2

L9680

Package:

TQFP 100 14x14x1.0

Material Declaration**:

Marketing Status

量産中

Package

TQFP 100 14x14x1.0

Grade

Automotive

RoHS Compliance Grade

Ecopack2

L9680TR

Package:

TQFP 100 14x14x1.0

Material Declaration**:

PDF XML

Marketing Status

量産中

Package

TQFP 100 14x14x1.0

Grade

Automotive

RoHS Compliance Grade

Ecopack2

(**) st.comで提供している材料宣誓書は、パッケージ・ファミリ内で最も一般的に使用されているパッケージに基づく汎用ドキュメントの場合があります。そのため、特定の製品では100%正確ではない可能性があります。特定の製品情報については、セールスサポートまでお問い合わせください

サンプル & 購入

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L9680
Available at distributors

販売代理店在庫 L9680

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L9680TR
Available at distributors

販売代理店在庫 L9680TR

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地域 在庫 最小発注数量 パートナー企業リンク

販売代理店在庫データ:

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L9680 量産中

Budgetary Price (US$)*/Qty:
-
パッケージ:
梱包タイプ:
RoHS:
Country of Origin:
ECCN (US):
ECCN (EU):

製品型番:

L9680

Operating Temperature (°C)

最小:

最大:

L9680TR 量産中

Budgetary Price (US$)*/Qty:
-
パッケージ:
梱包タイプ:
RoHS:
Country of Origin:
ECCN (US):
ECCN (EU):

製品型番:

L9680TR

Operating Temperature (°C)

最小:

最大:

販売代理店

販売代理店在庫データ:

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(*)概算用の参考価格(US$)です。現地通貨でのお見積りについては、STのセールス・オフィスまたは販売代理店までお問い合わせください。