产品概述
描述
The L9352B is designed to drive inductive loads in low side configurations like hydraulic valves used in ABS/ESC systems. Integrated active Zener diodes clamp (for channel1 and 2) or free wheeling diodes (for channel 3 and 4) allow the recirculation of the inductive loads.All four channels are monitored with a status output. All wiring to the loads and supply pins of the device are controlled. The device is selfprotected against short circuit at the outputs and overtemperature. For each channel, one independent push-pull status output is used for a parallel diagnostic function.
Channel 3 and 4 work as current controlled channels. The target value of the current is given by the duty cycle (DC) of the 2 kHz PWM input signal.
The output current is controlled through the output PWM of the power stage. The regulator limits of 10% or 90% are detected and monitored with the status signal. The current is measured during the recirculation phase of the load.
Using an external clock frequency of 250 kHz, the PWM output frequancy is 3.9 kHz.
A digital PI (proportional and integrating) regulator is performed in order to internally control the target current basing on the load current measurements.
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所有功能
- Regulator error control
- Regulator drift detection
- Electrostatic discharge (ESD) protection
- External clock control
- Ground and supply loss detection
- Four low-side output driver with protection diagnostics.
2 channels designed as conventional switch (rON = 0.2 typ.) with integrated 60 V Zener diodes clamp. 2 current controlled channels (rON = 0.2 typ.) with current range from 0 mA to 2.25 A typ. with integrated recirculation diodes.
- Short circuit protection
- Output slope control
- Open load and over load current detection
- Recirculation path control
- Selective overtemperature shutdown
电路原理图
All resources
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产品规格 (2)
| Resource title | Latest update | |||
|---|---|---|---|---|
| 19 Sep 2016 | 19 Sep 2016 | |||
| 19 Sep 2016 | 19 Sep 2016 |
应用手册 (3)
| Resource title | Latest update | |||
|---|---|---|---|---|
| 24 Mar 2020 | 24 Mar 2020 | |||
| 24 Mar 2020 | 24 Mar 2020 | |||
| 19 Nov 2019 | 19 Nov 2019 |
用户手册 (1)
| Resource title | Latest update | |||
|---|---|---|---|---|
| 14 Nov 2019 | 14 Nov 2019 |
选型指南 (1)
| Resource title | Latest update | |||
|---|---|---|---|---|
| 02 Mar 2021 | 02 Mar 2021 |
EDA Symbols, Footprints and 3D Models
STMicroelectronics - L9352B
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Symbols
Footprints
3D models
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** |
|---|---|---|---|---|---|
| L9352B-LF | 批量生产 | PowerSO 36 | 汽车应用 | Ecopack2 | |
| L9352B-TR-LF | 批量生产 | PowerSO 36 | 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$)*/Qty | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 最小值 | 最大值 | |||||||||||
| L9352B-TR-LF | 1 distributors | Buy Direct | 批量生产 | EAR99 | NEC | Tape And Reel | PowerSO 36 | -40 | 150 | MALAYSIA | 4.45 / 1k | |
| L9352B-LF | 1 distributors | 批量生产 | EAR99 | NEC | Tube | PowerSO 36 | -40 | 150 | MALAYSIA | 4.45 / 1k | ||
供货状态
批量生产ECCN (US)
EAR99Budgetary Price (US$)*/Qty
4.45 / 1k