Overview
The VN7050AJTR is a high-side driver designed by STMicroelectronics, specifically tailored for automotive applications. It is manufactured using ST's proprietary VIPower M0-7 technology and is available in PowerSSO-16 and SO-8 packages. This device is designed to drive 12 V automotive grounded loads through a 3 V and 5 V CMOS-compatible interface, providing advanced protection and diagnostic functions.
The VN7050AJTR integrates various protective features such as load current limitation, overload active management by power limitation, and overtemperature shutdown with configurable latch-off. It also includes a FaultRST pin to unlatch the output in case of a fault or to disable the latch-off functionality. A dedicated multifunction multiplexed analog output pin delivers sophisticated diagnostic functions, including high precision proportional load current sense, supply voltage feedback, and chip temperature sense.
Key Specifications
| Parameter | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|
| Operating Supply Voltage (VCC) | 4 | 13 | 28 | V |
| On-state Resistance (RON) | - | 50 | 100 | mΩ |
| Current Limitation (ILIMH) | 21 | 30 | 42 | A |
| Standby Current (ISTBY) | - | - | 0.5 | µA |
| Thermal Shutdown Temperature (TTSD) | 150 | - | 200 | °C |
| Operating Temperature Range | -40 | - | 150 | °C |
Key Features
- AEC-Q100 qualified for automotive applications.
- Single channel smart high-side driver with MultiSense analog feedback.
- Very low standby current.
- Compatible with 3 V and 5 V CMOS outputs.
- Multiplexed analog feedback for load current, supply voltage, and chip temperature.
- Advanced protective functions including undervoltage shutdown, overvoltage clamp, load current limitation, and thermal shutdown.
- Configurable latch-off on overtemperature or power limitation with a dedicated fault reset pin.
- Detection of overload, short to ground, short to VCC, and OFF-state open-load.
- Sense enable/disable feature for OFF-state diagnosis and external sense resistor sharing.
Applications
- All types of automotive resistive, inductive, and capacitive loads.
- Specially intended for automotive turn indicators (up to P27W or SAE1156 or LED Rear Combinations).
- Protected supply for ADAS systems: radars and sensors.
Q & A
- What is the operating supply voltage range of the VN7050AJTR?
The operating supply voltage range is from 4 V to 28 V.
- What is the typical on-state resistance of the VN7050AJTR?
The typical on-state resistance is 50 mΩ at 25°C.
- What are the key diagnostic functions provided by the VN7050AJTR?
The device provides high precision proportional load current sense, supply voltage feedback, and chip temperature sense, along with detection of overload, short to ground, short to VCC, and OFF-state open-load.
- How does the FaultRST pin function in the VN7050AJTR?
The FaultRST pin unlatches the output in case of a fault or disables the latch-off functionality if kept low.
- What is the maximum current limitation of the VN7050AJTR?
The maximum current limitation is typically 30 A.
- Is the VN7050AJTR AEC-Q100 qualified?
- What are the package options for the VN7050AJTR?
The device is available in PowerSSO-16 and SO-8 packages.
- What is the thermal shutdown temperature of the VN7050AJTR?
The thermal shutdown temperature range is from 150°C to 200°C.
- Can the VN7050AJTR be used in low-power mode?
- What types of loads can the VN7050AJTR drive?
The device can drive all types of automotive resistive, inductive, and capacitive loads.
