onsemi

UC3845BVN  

DC DC Switching Controllers

UC3845BVN Description

The UC3845BVN is a transistor driver IC designed for power management applications, specifically tailored for boost and flyback topologies. Manufactured by onsemi, this integrated circuit (IC) is part of the Power Management (PMIC) category and offers a robust solution for various power conversion needs. Despite its obsolete status, the UC3845BVN remains a reliable choice for engineers seeking a proven and versatile driver IC.

UC3845BVN Features

• Output Type: Transistor Driver
• Output Configuration: Positive, Isolation Capable
• Frequency - Switching: Up to 500kHz, providing high-frequency operation suitable for compact and efficient power supplies.
• Voltage - Supply (Vcc/Vdd): Operates within a wide range of 7.6V to 30V, making it adaptable to various input voltage conditions.
• Moisture Sensitivity Level (MSL): Level 1 (Unlimited), ensuring the IC is suitable for a wide range of environmental conditions without moisture-related concerns.
• Control Features: Frequency Control, allowing precise regulation of the switching frequency to optimize performance and efficiency.
• Duty Cycle (Max): 48%, which helps in maintaining stable output voltage and current under varying load conditions.
• Output Phases: 1, simplifying the design and reducing complexity in single-phase power conversion systems.
• Package: Tube, with an 8-DIP (Dual In-line Package) form factor, suitable for through-hole mounting, ensuring mechanical stability and ease of integration into PCB designs.
• REACH Status: REACH Unaffected, ensuring compliance with environmental and health regulations.
• ECCN: EAR99, indicating compliance with export regulations.
• HTSUS: 8542.31.0001, facilitating accurate classification for customs and import purposes.

UC3845BVN Applications

The UC3845BVN is ideal for a variety of applications where efficient power conversion and reliable performance are paramount. Its versatility makes it suitable for:

• Boost Converters: Enhancing voltage levels in applications such as LED lighting, automotive electronics, and portable devices.
• Flyback Converters: Providing isolated power supplies in telecommunications, industrial controls, and medical equipment.
• General Power Management: Utilized in power supplies, battery chargers, and other systems requiring efficient voltage regulation and control.

Conclusion of UC3845BVN

The UC3845BVN, despite being marked as obsolete, continues to offer significant value in the power management domain. Its ability to operate at high frequencies, coupled with a wide input voltage range and robust control features, makes it a reliable choice for engineers. The IC's compatibility with boost and flyback topologies ensures it can be integrated into a wide array of applications, from consumer electronics to industrial systems. While newer models may offer advanced features, the UC3845BVN remains a proven and cost-effective solution for power conversion needs, ensuring stable and efficient performance in various electronic designs.

UC3845BVN Documents

Download datasheets and manufacturer documentation for UC3845BVN

Datasheets :

UC3844B,45B & UC2844B,45B      

PCN Obsolescence/ EOL :

Multiple Devices 03/Jan/2008      

Environmental Information :

onsemi RoHS