Overview
The NCV7428MW3R2G, produced by onsemi, is a System Basis Chip (SBC) designed to integrate essential functions typically found in automotive Electronic Control Units (ECUs). This chip combines a low-drop voltage regulator, a LIN (Local Interconnect Network) transceiver, and various protection and monitoring functions, making it a comprehensive solution for automotive and industrial applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Conditions |
|---|---|---|---|---|---|
| VS (Maximum DC voltage at VS pin) | -0.3 | - | 45 | V | - |
| VOUT (Maximum voltage at VOUT pin) | -0.3 | - | 6 | V | - |
| VLIN (Maximum voltage at LIN bus pin) | -45 | - | 45 | V | - |
| VOUT_RES_33 (VOUT monitoring threshold for 3.3V version) | 4.55 | - | 4.75 | V | VOUT falling |
| VLIN_dom_LoSup (LIN dominant output voltage at low supply) | - | - | 1.2 | V | TxD = Low; VS = 7.3 V |
| TJ (Junction temperature range) | -40 | - | 170 | °C | - |
| TSTG (Storage temperature range) | -55 | - | 150 | °C | - |
| VESD (System ESD at pins VS, LIN) | ±14 | - | - | kV | IEC 61000-4-2: 330 Ω / 150 pF |
Key Features
- Control Logic: Ensures safe power-up sequence and correct reaction to different supply conditions. Controls mode transitions, including power management and bus wakeup treatment. Generates reset signals.
- Voltage Regulator: Provides a 3.3 V or 5 V output from a low-drop voltage regulator, capable of delivering up to 70 mA with ±2% accuracy. Includes undervoltage detection with a reset output to the supplied microcontroller.
- LIN Transceiver: Compliant with LIN2.x and J2602 specifications. Features TxD dominant timeout protection and transceiver mode controlled by a dedicated input pin.
- Protection and Monitoring Functions: Includes thermal shutdown protection, load dump protection (up to 45 V), LIN bus pin protection against transients, and ESD protection level for LIN and VS pins > ±8 kV.
- Package and Compliance: Available in a wettable flank package for enhanced optical inspection quality. AEC-Q100 qualified and PPAP capable. Pb-free, halogen-free/BFR-free, and RoHS compliant.
Applications
- Automotive: Ideal for use in automotive Electronic Control Units (ECUs) due to its robust design and compliance with automotive standards.
- Industrial Networks: Suitable for industrial networks requiring reliable and robust communication and power management solutions.
Q & A
- What is the NCV7428MW3R2G used for?
The NCV7428MW3R2G is a System Basis Chip used in automotive and industrial applications to provide power management, LIN communication, and protection functions for Electronic Control Units (ECUs).
- What are the output voltage options for the NCV7428MW3R2G?
The chip can provide either a 3.3 V or 5 V output from its low-drop voltage regulator.
- What is the maximum current delivery of the voltage regulator?
The voltage regulator can deliver up to 70 mA with ±2% accuracy.
- Is the NCV7428MW3R2G compliant with any specific standards?
Yes, it is compliant with LIN2.x and J2602 specifications, and it is also AEC-Q100 qualified and PPAP capable.
- What kind of protection does the NCV7428MW3R2G offer?
The chip offers thermal shutdown protection, load dump protection up to 45 V, LIN bus pin protection against transients, and ESD protection level for LIN and VS pins > ±8 kV.
- What is the operating temperature range of the NCV7428MW3R2G?
The junction temperature range is -40°C to +170°C, and the storage temperature range is -55°C to +150°C.
- How does the LIN transceiver operate?
The LIN transceiver operates in LIN Active, LIN Wakeup, and LIN Off modes, controlled by the EN pin and the operating mode of the device.
- What is the purpose of the RSTN pin?
The RSTN pin provides a system reset signal, which is guaranteed to be low during shutdown or thermal shutdown modes.
- Is the NCV7428MW3R2G environmentally friendly?
Yes, the device is Pb-free, halogen-free/BFR-free, and RoHS compliant.
- What package type is the NCV7428MW3R2G available in?
The chip is available in a wettable flank package for enhanced optical inspection quality.
