Overview
The UJA1075ATW/5V0/WD,118, produced by NXP USA Inc., is a high-speed CAN/LIN core System Basis Chip (SBC) designed for automotive and industrial applications. This chip integrates multiple functionalities, including a high-speed CAN transceiver, a LIN transceiver, two voltage regulators, and an advanced independent watchdog. It is tailored to replace basic discrete components in Electronic Control Units (ECUs), enhancing system reliability and efficiency.
Key Specifications
| Parameter | Description |
|---|---|
| Package | HTSSOP32 (plastic thermal enhanced thin shrink small outline package; 32 leads; body width 6.1 mm; lead pitch 0.65 mm; exposed die pad) |
| CAN Transceiver | High-speed CAN transceiver, inter-operable and downward compatible with CAN transceiver TJA1042, and compatible with ISO 11898-2 and ISO 11898-5 standards |
| LIN Transceiver | LIN transceiver compliant with LIN 2.1, LIN 2.0, and SAE J2602, and compatible with LIN 1.3 |
| Voltage Regulators | 250 mA voltage regulator for supplying a microcontroller; extendable with external PNP transistor for increased current capability and dissipation distribution. Available in 5 V and 3.3 V versions |
| Watchdog | Advanced independent watchdog (available in WD versions) |
| Operating Voltage | Can operate at VBAT voltages down to 5.5 V (e.g., during cranking) in accordance with ISO 7637, pulse 4 |
| Temperature Range | Includes overtemperature protection (OTP) that switches the SBC to Overtemp mode if the chip temperature rises above the OTP activation threshold |
Key Features
- Integrated high-speed CAN and LIN transceivers for robust network communication
- Two voltage regulators (5 V or 3.3 V) with the option to extend current capability using an external PNP transistor
- Advanced independent watchdog for system reliability
- Wake-up by bus activity, cyclic wake-up, and external switches
- Periodic control signal for pulsed testing of wake-up switches, allowing low-current operation
- Stable output under all conditions, including during cranking and overtemperature protection
- Exposed die pad for better heat dissipation via the printed-circuit board
Applications
The UJA1075ATW/5V0/WD,118 is primarily used in automotive and industrial Electronic Control Units (ECUs) to manage power and sensor peripherals. It is suitable for applications requiring high-speed CAN and LIN network interfaces, such as:
- Automotive control systems (e.g., engine control, transmission control, body control)
- Industrial automation and control systems
- Networking applications in vehicles and industrial equipment
Q & A
- What is the UJA1075ATW/5V0/WD,118 used for?
The UJA1075ATW/5V0/WD,118 is used in Electronic Control Units (ECUs) to integrate high-speed CAN and LIN transceivers, voltage regulators, and a watchdog, enhancing system reliability and efficiency in automotive and industrial applications.
- What are the key components integrated into the UJA1075ATW/5V0/WD,118?
The chip integrates a high-speed CAN transceiver, a LIN transceiver, two voltage regulators, and an advanced independent watchdog.
- What are the voltage regulator options available for this chip?
The chip is available with either a 5 V or a 3.3 V voltage regulator.
- How does the watchdog function in the UJA1075ATW/5V0/WD,118?
The watchdog provides advanced system reliability by monitoring the system and taking corrective actions if necessary.
- What are the wake-up mechanisms supported by the UJA1075ATW/5V0/WD,118?
The chip supports wake-up by bus activity, cyclic wake-up, and the activation of external switches.
- How does the UJA1075ATW/5V0/WD,118 handle overtemperature conditions?
The chip includes overtemperature protection (OTP) that switches the SBC to Overtemp mode if the chip temperature rises above the OTP activation threshold.
- What is the significance of the exposed die pad in the UJA1075ATW/5V0/WD,118 package?
The exposed die pad allows for better heat dissipation from the SBC via the printed-circuit board.
- Is the UJA1075ATW/5V0/WD,118 compatible with specific industry standards?
Yes, it is compatible with ISO 11898-2 and ISO 11898-5 for CAN, and LIN 2.1, LIN 2.0, and SAE J2602 for LIN.
- What is the operating voltage range of the UJA1075ATW/5V0/WD,118?
The chip can operate at VBAT voltages down to 5.5 V, in accordance with ISO 7637, pulse 4.
- What are some typical applications of the UJA1075ATW/5V0/WD,118?
Typical applications include automotive control systems, industrial automation, and networking applications in vehicles and industrial equipment.
