Overview
The NCV7428MW5R2G, produced by onsemi, is a System Basis Chip (SBC) designed for automotive and industrial applications. This chip integrates essential functions typically found in Electronic Control Units (ECUs), including a low-drop voltage regulator, a LIN (Local Interconnect Network) transceiver, and various protection and monitoring features. The NCV7428 ensures a safe power-up sequence, controls mode transitions, and generates reset signals, making it a comprehensive solution for microcontroller power supply and LIN communication.
Key Specifications
| Parameter | Min | Typ | Max | Units | 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_5 (VOUT monitoring threshold for 5V version) | 4.55 | - | 4.75 | V | VOUT falling |
| VS_PORH (VS threshold for power-up) | 3.3 | - | 4 | V | VS rising |
| 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.
- Low-drop Voltage Regulator: Provides a 5 V or 3.3 V output (depending on the version) with an accuracy of ±2% and can deliver up to 70 mA. 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. Supports data transmission and reception via the LIN bus.
- Protection and Monitoring Functions: Includes thermal shutdown protection, load dump protection (up to 45 V), and ESD protection (±8 kV). The LIN bus pin is protected against transients in an automotive environment.
- 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: Suitable for use in various automotive Electronic Control Units (ECUs) due to its robust design and compliance with automotive standards.
- Industrial Networks: Can be used in industrial networks requiring reliable LIN communication and robust power supply management.
Q & A
- What is the NCV7428MW5R2G used for?
The NCV7428MW5R2G is a System Basis Chip used in automotive and industrial applications to provide a low-drop voltage regulator, LIN transceiver, and various protection and monitoring functions.
- What are the output voltage options for the NCV7428?
The NCV7428 can provide either a 3.3 V or 5 V output, depending on the version.
- What is the maximum current delivery of the voltage regulator?
The voltage regulator can deliver up to 70 mA.
- Is the NCV7428 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 NCV7428 offer?
The NCV7428 offers thermal shutdown protection, load dump protection up to 45 V, and ESD protection of ±8 kV.
- How is the LIN transceiver controlled?
The LIN transceiver mode is controlled by a dedicated input pin (EN), and it supports data transmission and reception via the LIN bus.
- What is the junction temperature range for the NCV7428?
The junction temperature range is from -40°C to 170°C.
- Is the NCV7428 RoHS compliant?
Yes, the NCV7428 is Pb-free, halogen-free/BFR-free, and RoHS compliant.
- What are the typical applications of the NCV7428?
The NCV7428 is typically used in automotive and industrial networks.
- How does the NCV7428 handle power-up and shutdown?
The NCV7428 ensures a safe power-up sequence and enters shutdown mode when the VS supply falls below the specified threshold (VS_PORL).
