4-channel valve driver

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  • The L9349 is a monolithic IC designed to drive inductive loads in low side configurations like hydraulic valves used in ABS systems.

    Particular care has been taken to protect the device against failures, to avoid electromagnetic interferences and to offer extensive real time diagnostics.
    The internal pull down current source at the ENable and INput pins assures, that the device is switched off, in case of open input conditions.
    An output voltage slope limitation is implemented to reduce the EMI.
    The device is equipped with an integrated Zener diodes clamp for fast inductive load current recirculation. This structure limits the output voltage during the recirculation phase to 50V.
    The device is self-protected against short circuit at the outputs and overtemperature.
    For the real time error diagnosis, the voltage and the current of the outputs are compared with internally fixed thresholds to recognize open load in OFF and ON conditions.
    The output voltages are also compared with each other in OFF condition with a fixed offset, in order to recognize load bypasses.
    If the over load current threshold is exceeded, the output current will be limited internally during the diagnostic overload delay switch-off time.
    All four channels are monitored with a status output. The diagnostic output level in connection with different enable and input conditions allows it to recognize the different fail states.

    主要特性

    • Electrostatic discharge (ESD) protection
    • Selective overtemperature shutdown
    • Overload disable
    • Load bypass detection
    • Four low-side output driver with protection diagnostics designed as a conventional switch2 channels with 5 A output current capability and rON = 0.2 typ.2 channels with 3 A output current capability and rON = 0.3 typ.
    • Output slope control
    • Integrated 60 V Zener diodes output clamping structure
    • Open load detection in ON and OFF condition
    • Signal and power ground loss shutdown
    • Short circuit protection

电路原理图

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样片和购买

产品型号
供货状态
数量
预算价格(US$)
封装
包装类型
温度(ºC) ECCN (US)
更多信息
从分销商订购
从ST订购
min
max
L9349-LF
批量生产
1000 1.8 PowerSO-20 Tube -40 150 EAR99
更多信息

Country of Origin:

MALAYSIA

没有经销商,请联系我们的销售办事处
L9349TR-LF
批量生产
1000 1.8 PowerSO-20 Tape And Reel -40 150 EAR99
更多信息

Country of Origin:

MALAYSIA

查看供货情况

Distributor availability ofL9349TR-LF

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 600 1 Order Now
MOUSER WORLDWIDE 826 1 Order Now

代理商库存报告日期: 2019-12-06

代理商名称

DIGIKEY

库存

600

Min.Order

1

地区

WORLDWIDE Order Now

MOUSER

库存

826

Min.Order

1

地区

WORLDWIDE Order Now

代理商库存报告日期: 2019-12-06

立即购买

L9349-LF

供货状态

批量生产

数量

1000

单价(US$)

1.8*

单价(US$)

1.8

封装

PowerSO-20

包装类型

Tube

Operating Temperature (°C)

(min)

-40

(max)

150

ECCN (US)

EAR99

Country of Origin

MALAYSIA

L9349TR-LF

供货状态

批量生产

数量

1000

单价(US$)

1.8*

Distributor availability ofL9349TR-LF

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 600 1 Order Now
MOUSER WORLDWIDE 826 1 Order Now

代理商库存报告日期: 2019-12-06

代理商名称

DIGIKEY

库存

600

Min.Order

1

地区

WORLDWIDE Order Now

MOUSER

库存

826

Min.Order

1

地区

WORLDWIDE Order Now

代理商库存报告日期: 2019-12-06

单价(US$)

1.8

封装

PowerSO-20

包装类型

Tape And Reel

Operating Temperature (°C)

(min)

-40

(max)

150

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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产品型号 供货状态 封装 等级规格 符合RoHS级别 Material Declaration**
L9349-LF
批量生产
PowerSO-20 汽车 Ecopack2
L9349TR-LF
批量生产
PowerSO-20 汽车 Ecopack2

L9349-LF

Package:

PowerSO-20

Material Declaration**:

PDF XML

Marketing Status

批量生产

Package

PowerSO-20

Grade

Automotive

RoHS Compliance Grade

Ecopack2

L9349TR-LF

Package:

PowerSO-20

Material Declaration**:

PDF XML

Marketing Status

批量生产

Package

PowerSO-20

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.

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