Overview
The UJA1169ATK/F/3Z is a high-speed CAN (Controller Area Network) transceiver integrated circuit manufactured by NXP USA Inc. This chip is designed to serve as an interface between the two-wire CAN bus and the CAN protocol controller, making it a crucial component in various automotive applications. It features a low-power standby mode and high ESD protection, ensuring reliability and efficiency in demanding environments.
Key Specifications
| Parameter | Description |
|---|---|
| Data Rate Compliance | ISO 11898-5 |
| Standby Mode Current | Low quiescent current |
| ESD Protection | Above 6 kV (HBM), 8 kV on CAN-bus pins, 6 kV on pins BAT, WAKE, VEXT |
| Thermal Protection | Integrated thermal protection |
| Short-Circuit Protection | Short-circuit proof to 58 V Battery |
| Supply Voltage | 3 V to 28 V |
| Regulator | 3.3 V regulator (V1) for microcontroller and/or other loads; additional 5 V regulator (V2) for internal CAN transceiver and on-board hardware |
| Package | 20-HVSON (3.5x5.5) |
| Interface | CAN, SPI |
Key Features
- High-speed data rates up to 5 Mbit/s in compliance with ISO 11898-5 and SAE J2284-1 to SAE J2284-5
- Low-power standby and sleep modes with bus and local wake-up capability
- High ESD protection and short-circuit protection on CAN-bus pins
- Integrated 3.3 V or 5 V scalable supply (V1) for microcontroller and/or other loads
- Additional 5 V regulator (V2) for internal CAN transceiver and on-board hardware
- Serial Peripheral Interface (SPI) for control and diagnostics
- Watchdog and non-volatile memory for configuration settings
- CAN FD-passive partial networking support, allowing normal CAN controllers to remain in sleep/standby mode during CAN FD communication
Applications
The UJA1169ATK/F/3Z is widely adopted in automotive applications due to its resilience and capabilities. It is commonly found in:
- Powertrain systems
- Body control modules
- Gateways
- Other in-car electronic systems
Its robust design and features make it an ideal choice for ensuring reliable communication in the challenging environments of automotive systems
Q & A
- What is the primary function of the UJA1169ATK/F/3Z?
The UJA1169ATK/F/3Z serves as an interface between the two-wire CAN bus and the CAN protocol controller.
- What are the key compliance standards for the UJA1169ATK/F/3Z?
The chip complies with ISO 11898-5 and SAE J2284-1 to SAE J2284-5 standards.
- What is the ESD protection level of the UJA1169ATK/F/3Z?
The chip offers ESD protection above 6 kV (HBM) and 8 kV on CAN-bus pins.
- What are the power supply options for the UJA1169ATK/F/3Z?
The chip features a 3.3 V regulator (V1) and an additional 5 V regulator (V2) for the internal CAN transceiver and on-board hardware.
- Does the UJA1169ATK/F/3Z support CAN FD?
Yes, it supports CAN FD up to 5 Mbit/s and includes CAN FD-passive partial networking.
- What is the purpose of the SPI interface on the UJA1169ATK/F/3Z?
The SPI interface is used for control and diagnostics.
- How does the UJA1169ATK/F/3Z handle thermal protection?
The chip includes integrated thermal protection and requires proper heat dissipation, especially when bundled with other electronics.
- What are the common applications of the UJA1169ATK/F/3Z in automotive systems?
It is used in powertrain systems, body control modules, gateways, and other in-car electronic systems.
- How does the UJA1169ATK/F/3Z manage standby and sleep modes?
The chip can operate in very low-current standby and sleep modes with bus and local wake-up capability.
- What additional features does the UJA1169ATK/F/3Z offer for system reliability?
The chip includes a watchdog, non-volatile memory for configuration settings, and a dedicated LIMP output pin to flag system failures.
