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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 switch
2 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
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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** |
|---|---|---|---|---|---|
| L9349-LF |
批量生产
|
PowerSO-20 | 汽车应用 | Ecopack2 | |
| L9349TR-LF |
批量生产
|
PowerSO-20 | 汽车应用 | 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$)*/Qty | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 最小值 | 最大值 | |||||||||||
| L9349-LF | 没有经销商，请联系我们的销售办事处 |
批量生产
|
EAR99 | NEC | Tube | PowerSO-20 | -40 | 150 | MALAYSIA | 1.8 / 1k | ||
| L9349TR-LF | 2 distributors | 立即购买 |
批量生产
|
EAR99 | NEC | Tape And Reel | PowerSO-20 | -40 | 150 | MALAYSIA | 1.8 / 1k | |
供货状态
批量生产ECCN (US)
EAR99Budgetary Price (US$)*/Qty
1.8 / 1k