产品概述
描述
The VNF9D3Q is a device made using STMicroelectronics VIPower technology. It is intended for driving resistive, inductive or capacitive loads directly connected to ground.
The device is protected against voltage transient on VCC pin. Programming, control and diagnostics are implemented via the SPI bus. A digital current sense feedback and an STi²Fuse digital current sense feedback for each channel are provided through two independent integrated 10-bit ADCs per channel. Dedicated trimming bits adjust the ADC reference current. The device is equipped with 2 outputs controllable via SPI and/or with two dedicated direct inputs.
Real time diagnostic is available through the SPI bus (communication error, overtemperature, harness protection, overload protection, VCC and output voltage monitoring, TC monitoring). Output overcurrent detection protects the device in overload condition. Thermal shutdown is configured as latched off.
The VNF9D3Q embeds the ST proprietary I²t functionality, featuring an intelligent circuit breaking aimed at protecting PCB traces, connectors and wire harness from overheating, with no impact on load transients like inrush currents and capacitance charging. This function is set by two parameters, called INOM and tNOM: there are 3 dedicated bits, per each parameter, to set respectively INOM (nominal current) and tNOM (nominal timing). The I²t curve parameters can be individually set per each channel. The default values of these two parameters can be programmed twice using dedicated OTPs. The selection of default I²t configuration from OTPs for all channels is defined by the I2TCFGINIT in the ITCNTSR register. Further information about the OTP programming mode is provided in the dedicated user manual UM3275 (OTP programming for STi²Fuse devices).
The device enters a limp-home mode in case of reset of digital memory, watchdog monitoring time-out event or when LH (limp-home) pin is set to high. In limp-home mode each output is controlled by dedicated direct inputs. Emergency pins allow a rapid switch-off of the output channels in case of critical events in normal operation mode bypassing SPI control.
During standby mode, the device is able to support the parking mode functionality. In case the OUTPUT pin is pulled up to battery by an external secondary switch (for instance, the L99SP08 which is delivering the requested current to the load), the device offers a very low current consumption.
For further information refer to the application note AN6025 - Interaction of L99SP08 with single (VNF9SxQ) and dual (VNF9DxQ) hybrid eFuses.
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所有功能
- AEC-Q100 qualified
- General
- 24-bit ST-SPI for full diagnostic and digital current sense feedback
- Integrated 10-bit ADC for digital current sense
- Integrated 10-bit ADC for STi²Fuse digital current sense
- Advanced limp-home functions for robust fail-safe system
- Very low standby current for parking mode functionality
- Control through direct inputs and/or SPI
- Emergency stop and limp-home pins for advanced safety features
- Capacitive loads charging mode
- PQFN 7x8.5 package with wettable flanks
- Compliant with European directive 2002/95/EC
- Diagnostic functions
- Digital proportional load current sense
- Diagnostic of overload and short to GND, harness protection
- VCC and output voltage digital feedback
- Case temperature monitoring
- Overtemperature shutdown, undervoltage, and overvoltage prewarning
- Protection
- Full programmable wire harness protection (STi²Fuse)
- Load peak current latch-off
- Overtemperature shutdown (latch-off)
- Overvoltage clamp
- Load dump protected
- Protection against loss of ground
EDA符号、封装和3D模型
意法半导体 - VNF9D3Q
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符号
封装
3D模型
质量与可靠性
| 产品型号 | Marketing Status | 包 | 等级规格 | 符合RoHS级别 | Longevity Commitment | Longevity Starting Date | 材料声明** |
|---|---|---|---|---|---|---|---|
| VNF9D3QTR | 批量生产 | PQFN 7X8.5X0.95MM DUAL CHANNEL | 汽车应用 | Ecopack2 | - | - | |
VNF9D3QTR
Package:
PQFN 7X8.5X0.95MM DUAL CHANNELMaterial Declaration**:
(**) 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。
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样片和购买
| 产品型号 | 供货状态 | Budgetary Price (US$)*/Qty | 从ST订购 | Order from distributors | 包 | 包装类型 | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | Operating Temperature (°C) (min) | Operating Temperature (°C) (max) | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| VNF9D3QTR | | | distributors 无法联系到经销商，请联系我们的销售办事处 |
VNF9D3QTR 批量生产