onsemi

UC3845BVD

UC3845BVD Description

The UC3845BVD is a transistor driver designed for DC-DC switching controllers, specifically tailored for boost and flyback topologies. Manufactured by onsemi, this integrated circuit (IC) offers a robust and versatile solution for power conversion applications. It features a wide supply voltage range of 7.6V to 30V, making it suitable for various power supply designs. The UC3845BVD supports switching frequencies up to 500kHz, ensuring efficient power conversion and compact design. The output configuration is positive and isolation capable, providing flexibility in circuit design. Despite being marked as obsolete, the UC3845BVD remains a reliable choice for legacy systems and specific applications where its unique features are advantageous.

UC3845BVD Features

• Output Type: Transistor Driver
• Output Configuration: Positive, Isolation Capable
• Frequency - Switching: Up to 500kHz
• Voltage - Supply (Vcc/Vdd): 7.6V to 30V
• Moisture Sensitivity Level (MSL): 1 (Unlimited)
• Synchronous Rectifier: No
• ECCN: EAR99
• Topology: Boost, Flyback
• Mounting Type: Surface Mount
• Clock Sync: No
• Number of: Outputs 1
• Control Features: Frequency Control
• Duty Cycle (Max): 48%
• Output Phases: 1
• HTSUS: 8542.31.0001
• Package: Tube
• Base Product Number: UC3845

UC3845BVD Applications

The UC3845BVD is ideal for applications requiring efficient power conversion in boost and flyback topologies. Its wide supply voltage range and high switching frequency make it suitable for compact and high-performance power supplies. The positive output configuration and isolation capability offer flexibility in circuit design, allowing for a variety of power conversion applications. Specific use cases include:

• Power Supplies: Ideal for designing efficient power supplies with high power density.
• Adaptive Voltage Controllers: Suitable for applications requiring dynamic voltage adjustments.
• DC-DC Converters: Enhances the performance of DC-DC converters by providing precise control and high-frequency operation.
• Legacy Systems: Provides a reliable solution for maintaining and upgrading existing systems that utilize this IC.

Conclusion of UC3845BVD

The UC3845BVD, despite being obsolete, remains a valuable component for specific power conversion applications. Its wide supply voltage range, high switching frequency, and versatile output configuration make it a robust choice for engineers designing power supplies and DC-DC converters. The UC3845BVD's unique features, such as isolation capability and frequency control, offer distinct advantages over similar models, ensuring efficient and reliable performance. While newer alternatives may exist, the UC3845BVD continues to serve as a reliable solution for legacy systems and specialized applications.