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  • The L9678P IC is a system chip solution targeted for emerging market applications. Base system designs can be completed with the L9678P, SPC560Px microcontroller and an on-board acceleration sensor or PSI5 sensor.

    Energy reserve voltage is derived through a cost effective high frequency boost regulator. High frequency operation allows the user to pick up low value and cheap inductance. The voltage is programmable to 23 V or 33 V nominal.
    Battery voltage is sensed through the VBATMON pin providing start-up and shutdown control for the system. Once battery voltage drops below the minimum operating voltage, the device enables the integrated crossover switch to permit orderly shutdown.
    L9678P offers two linear regulators (5 V with external pass transistor and fully integrated 3.3 V). User can use one of these regulators to supply μC. Input/output pins are compatible with both ranges by dedicated supply pin VDDQ. External pass transistor gives the flexibility to easily address different current loads in case of different micro-controllers.
    One optional 7.2 V linear regulator with external pass transistor can be used to supply remote sensor interface.
    External acceleration data is received through the PSI-5 remote sensor interface. Both channels have independent decoders. Sensor data and diagnostics are available via SPI.
    The safing logic monitors inertial sensors (remote sensors via PSI-5 or on-board sensors via SPI) to determine if a crash event is in progress, thereby enabling deployment to occur. Parameters for sensor configuration and thresholds are user programmable.
    Squib deployment uses four independent high and low side drivers, capable of deploying at 25 V max. Diagnostic data control is provided through the SPI interface.
    The Hall-effect, resistive or switch sensor interface can be used to determine the state of external switch devices, such as buckle switches, seat track position sensors, weight sensors, deactivation switches.
    The integrated clock module provides a fixed clock signal for the microcontroller. The clock module provides the user the option of deleting the commonly used resonator or crystal.

    主な特徴

    • AEC-Q100 qualified
    • Energy reserve voltage power supply
      • High frequency boost regulator, 1.882 MHz
      • Output voltage user selectable, 23 V or 33 V ±5%
    • User configurable linear power supplies
      • 5.0 V and 7.2 V ±4% output voltages
      • External pass transistor
    • Fully integrated 3.3 V ±4% linear regulator
    • Battery voltage monitor and shutdown control with wake-up control
    • System voltage diagnostics with integrated ADC
    • Crossover switch
      • Crossover performance, max 3 Ω, 600 mA max.
    • Squib deployment drivers
      • 4 channel HSD/LSD
      • 25 V maximum deployment voltage
      • 1.2 A @ 2 ms and 1.75 A @ 0.5/0.7 ms deployment profiles
      • Integrated safing FET linear regulator, 20 V/25 V nominal
      • Current monitoring
      • Rmeasure, STB, STG and leakage diagnostics
      • High and low side driver FET tests
      • Safing FET test
    • User customizable safing logic
    • Two channel PSI-5 remote sensor interface (asynchronous mode), [only for L9678P-S version]
    • Four channel hall-effect, resistive or switch sensor interface
    • ISO9141 transceiver
    • Dual channel configurable high-side/low-side LED driver
    • Watchdog timer
    • Two integrated oscillators: 7.5/16 MHz
    • Temperature sensor
    • 32 bit SPI communications
    • Minimum operating voltage = 6 V
    • Operating temperature, -40 °C to 95 °C
    • Packaging - 64 pin

サンプル & 購入

製品型番
製品ステータス
パッケージ
梱包タイプ
温度(℃) ECCN (US)
Country of Origin
Approximate Price (US$)* / Qty
STからオーダー
販売代理店からオーダー
最小
最大
L9678PTR
量産中
LQFP 64 10x10x1.4 Tape And Reel -40 95 EAR99 MALAYSIA 6.43 / 1k

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

L9678P
量産中
LQFP 64 10x10x1.4 Tray -40 95 EAR99 MALAYSIA 6.43 / 1k

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

L9678PTR

製品ステータス

量産中

単価(US$)

3.5

Approximate Price (US$)* / Qty

6.43 / 1k

パッケージ

LQFP 64 10x10x1.4

梱包タイプ

Tape And Reel

Operating Temperature (°C)

(最小)

-40

(最大)

95

ECCN (US)

EAR99

Country of Origin

MALAYSIA

L9678P

製品ステータス

量産中

単価(US$)

3.5

Approximate Price (US$)* / Qty

6.43 / 1k

パッケージ

LQFP 64 10x10x1.4

梱包タイプ

Tray

Operating Temperature (°C)

(最小)

-40

(最大)

95

ECCN (US)

EAR99

Country of Origin

MALAYSIA

(*)概算用の希望小売単価(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。

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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 材料宣誓書**
L9678P
量産中
LQFP 64 10x10x1.4 Automotive Ecopack2
L9678PTR
量産中
LQFP 64 10x10x1.4 Automotive Ecopack2

L9678P

Package:

LQFP 64 10x10x1.4

Material Declaration**:

PDF XML

Marketing Status

量産中

Package

LQFP 64 10x10x1.4

Grade

Automotive

RoHS Compliance Grade

Ecopack2

L9678PTR

Package:

LQFP 64 10x10x1.4

Material Declaration**:

PDF XML

Marketing Status

量産中

Package

LQFP 64 10x10x1.4

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

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