UJA1069TW24/5V0/C

Product Overview

• Category: Integrated Circuit (IC)
• Use: Automotive Communication Network
• Characteristics: High-speed, Low-power, Robust Communication
• Package: 24-pin TSSOP (Thin Shrink Small Outline Package)
• Essence: Transceiver IC for automotive LIN (Local Interconnect Network) communication
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage: 5V
• Operating Temperature Range: -40°C to +125°C
• Data Rate: Up to 20 kbps
• ESD Protection: ±8 kV HBM (Human Body Model)
• Sleep Mode Current: <1 µA
• Wake-up Capability: External wake-up source or bus activity detection
• LIN Bus Voltage Range: 6V to 18V
• Short-Circuit Protection: Yes
• Fault Detection: Overtemperature, Undervoltage, Overvoltage, Loss of Ground, Bus Failure

Pin Configuration

The UJA1069TW24/5V0/C has a total of 24 pins. The pin configuration is as follows:

1. VBAT
2. GND
3. TXD
4. RXD
5. WAKE
6. STB
7. EN
8. LIN
9. VIO
10. VDD
11. VDDC
12. VDDP
13. VDDLIN
14. VDDWU
15. VDDRX
16. VDDTX
17. VDDSTB
18. VDDEN
19. VDDVBAT
20. NC
21. NC
22. NC
23. NC
24. NC

Functional Features

• High-speed LIN communication
• Low-power consumption in sleep mode
• Robust communication with built-in fault detection and protection mechanisms
• Wake-up capability from external sources or bus activity
• Short-circuit protection for enhanced safety

Advantages and Disadvantages

Advantages

• High reliability and robustness in automotive environments
• Low power consumption, suitable for battery-powered applications
• Integrated fault detection and protection features ensure system safety
• Wide operating temperature range allows usage in extreme conditions

Disadvantages

• Limited data rate compared to other communication protocols
• Requires additional components for complete LIN network implementation
• Not suitable for high-bandwidth applications

Working Principles

The UJA1069TW24/5V0/C is designed to facilitate communication over the LIN bus in automotive systems. It operates as a transceiver, enabling bidirectional data transfer between the microcontroller and the LIN bus. The IC supports various LIN protocol versions and provides features like wake-up capability, short-circuit protection, and fault detection.

During normal operation, the IC monitors the LIN bus for incoming messages and transmits data from the microcontroller to the bus. It also detects bus activity or external wake-up signals to exit the low-power sleep mode. The integrated fault detection mechanism continuously checks for abnormal conditions such as overtemperature, undervoltage, overvoltage, loss of ground, or bus failure.

Detailed Application Field Plans

The UJA1069TW24/5V0/C is widely used in automotive applications that require reliable and cost-effective communication over the LIN bus. Some common application areas include:

1. Body Control Modules (BCM)
2. Door Modules
3. Seat Control Units
4. Lighting Systems
5. HVAC (Heating, Ventilation, and Air Conditioning) Systems
6. Steering Wheel Controls
7. Mirror Control Units
8. Window Lift Systems
9. Sunroof Control Units
10. Instrument Clusters

Detailed and Complete Alternative Models

1. UJA1066TW24/5V0/C: Similar to UJA1069TW24/5V0/C, but with a different pin configuration.
2. TJA1029T/3V0/C: LIN transceiver IC with similar features but operates at 3.3V supply voltage.
3. MCP2021A-330E/SN: Another LIN transceiver IC with integrated voltage regulator and fault protection.

These alternative models offer similar functionality and can be considered as replacements for the UJA1069TW24/5V0/C in specific applications.

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