Overview
The VN7140AS-E, produced by STMicroelectronics, is a single-channel smart high-side driver designed for automotive applications. It is part of the VIPower M0-7 technology family and is housed in either PowerSSO-16 or SO-8 packages. This device is AEC-Q100 qualified, ensuring it meets stringent automotive standards. It features a very low standby current and integrates advanced protective functions such as load current limitation, overload active management, and overtemperature shutdown. The VN7140AS-E also includes a multifunction multiplexed analog output pin for sophisticated diagnostic functions, making it an ideal choice for driving 12 V automotive grounded loads through a 3 V and 5 V CMOS-compatible interface.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Maximum Switching Energy (single pulse) | 10 | mJ |
| Electrostatic Discharge (JEDEC 22A-114F) | 4000 | V |
| Junction Operating Temperature | -40 to 150 | °C |
| Storage Temperature | -55 to 150 | °C |
| Thermal Resistance Junction-Board (JEDEC JESD 51-8) | 7.9 (PowerSSO-16), 31 (SO-8) | °C/W |
| Thermal Resistance Junction-Ambient (JEDEC JESD 51-2) | 61 (PowerSSO-16), 71 (SO-8) | °C/W |
| Supply Current in Standby at VCC = 13 V | 0.5 µA | µA |
| Input Low Level Voltage | 0.9 | V |
| Input High Level Voltage | 2.1 | V |
| Input Hysteresis Voltage | 0.2 | V |
Key Features
- Advanced Protective Functions: Includes load current limitation, overload active management by power limitation, and overtemperature shutdown with configurable latch-off.
- MultiSense Analog Feedback: A dedicated multifunction multiplexed analog output pin delivers diagnostic functions such as high precision proportional load current sense, supply voltage feedback, and chip temperature sense.
- Low Standby Current: Very low standby current to minimize power consumption.
- CMOS-Compatible Interface: Drives 12 V automotive grounded loads through a 3 V and 5 V CMOS-compatible interface.
- Fault Detection and Reset: Features a FaultRST pin to unlatch the output in case of fault or disable the latch-off functionality.
- Diagnostic Capabilities: Detects overload, short circuit to ground, short to VCC, and OFF-state open-load.
Applications
- Automotive Signal Lamps: Specially intended for automotive signal lamps (up to R10W or LED Rear Combinations).
- ADAS Systems: Protected supply for Advanced Driver Assistance Systems (ADAS) such as radars and sensors.
- Automotive Loads: Suitable for all types of automotive resistive, inductive, and capacitive loads.
Q & A
- What is the maximum switching energy of the VN7140AS-E?
The maximum switching energy of the VN7140AS-E is 10 mJ (single pulse).
- What is the junction operating temperature range of the VN7140AS-E?
The junction operating temperature range is -40°C to 150°C.
- What is the thermal resistance junction-board for the PowerSSO-16 package?
The thermal resistance junction-board for the PowerSSO-16 package is 7.9 °C/W.
- What are the input voltage levels for the VN7140AS-E?
The input low level voltage is 0.9 V, and the input high level voltage is 2.1 V.
- What diagnostic functions does the MultiSense pin provide?
The MultiSense pin provides diagnostic functions such as load current sense, supply voltage feedback, and chip temperature sense.
- How does the FaultRST pin function?
The FaultRST pin unlatches the output in case of fault or disables the latch-off functionality if kept low.
- What types of automotive loads can the VN7140AS-E drive?
The VN7140AS-E can drive all types of automotive resistive, inductive, and capacitive loads.
- Is the VN7140AS-E AEC-Q100 qualified?
Yes, the VN7140AS-E is AEC-Q100 qualified.
- What is the standby current of the VN7140AS-E at VCC = 13 V?
The standby current at VCC = 13 V is 0.5 µA.
- What are some common applications of the VN7140AS-E?
Common applications include automotive signal lamps, ADAS systems, and other automotive loads.
