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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

サンプル & 購入

製品型番
製品ステータス
数量
概算価格(USS)
パッケージ
梱包タイプ
温度(℃) ECCN (US)
More info
販売代理店からオーダー
STからオーダー
最小値
max
L9679P
アクティブ
1000 4.9 TQFP 100 14x14x1.0 Tray - - EAR99
MORE INFO

Country of Origin:

MALAYSIA

販売代理店に在庫がない場合は、STのセールスオフィスまでお問い合わせください
L9679PTR
アクティブ
1000 4.9 TQFP 100 14x14x1.0 Tape And Reel - - EAR99
MORE INFO

Country of Origin:

MALAYSIA

在庫チェック

Distributor availability ofL9679PTR

代理店名
地域 在庫 最小発注 Third party link
DIGIKEY WORLDWIDE 100 1 Order Now

代理店レポートによる在庫データ: 2019-11-13

代理店名

DIGIKEY

在庫

100

Min.Order

1

地域

WORLDWIDE Order Now

代理店レポートによる在庫データ: 2019-11-13

L9679P

製品ステータス

アクティブ

数量

1000

Unit Price (US$)

4.9*

Unit Price (US$)

4.9

パッケージ

TQFP 100 14x14x1.0

梱包タイプ

Tray

Operating Temperature (°C)

(最小値)

-

(max)

-

ECCN (US)

EAR99

Country of Origin

MALAYSIA

L9679PTR

製品ステータス

アクティブ

数量

1000

Unit Price (US$)

4.9*

Distributor availability ofL9679PTR

代理店名
地域 在庫 最小発注 Third party link
DIGIKEY WORLDWIDE 100 1 Order Now

代理店レポートによる在庫データ: 2019-11-13

代理店名

DIGIKEY

在庫

100

Min.Order

1

地域

WORLDWIDE Order Now

代理店レポートによる在庫データ: 2019-11-13

Unit Price (US$)

4.9

パッケージ

TQFP 100 14x14x1.0

梱包タイプ

Tape And Reel

Operating Temperature (°C)

(最小値)

-

(max)

-

ECCN (US)

EAR99

Country of Origin

MALAYSIA

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors

推奨コンテンツ

00 ファイルがダウンロード用に選択されています

技術文書

    • 概要 バージョン サイズ アクション
      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

    • 概要 バージョン サイズ アクション
      AN4437
      L9678 user configurable airbag
      3.0
      4.03 MB
      PDF
      AN4437

      L9678 user configurable airbag

製品型番 製品ステータス パッケージ グレード RoHSコンプライアンスグレード Material Declaration**
L9679P
アクティブ
TQFP 100 14x14x1.0 オートモーティブ Ecopack2
L9679PTR
アクティブ
TQFP 100 14x14x1.0 オートモーティブ Ecopack2

L9679P

Package:

TQFP 100 14x14x1.0

Material Declaration**:

PDF XML

Marketing Status

アクティブ

Package

TQFP 100 14x14x1.0

Grade

Automotive

RoHS Compliance Grade

Ecopack2

L9679PTR

Package:

TQFP 100 14x14x1.0

Material Declaration**:

PDF XML

Marketing Status

アクティブ

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.