onsemi

UC2843BN

UC2843BN Description

The UC2843BN is a current mode PWM controller designed for power management applications, manufactured by onsemi. This device is part of the Power Management (PMIC) category and is known for its robust performance and versatile features. The UC2843BN is a transistor driver with a positive output configuration and isolation capability, making it suitable for a variety of power conversion topologies such as boost and flyback. It operates within a wide supply voltage range of 7.6V to 30V and supports switching frequencies up to 500kHz. Despite being marked as obsolete, the UC2843BN remains a reliable choice for many applications due to its comprehensive feature set and proven performance.

UC2843BN Features

• Output Type: Transistor Driver
• Output Configuration: Positive, Isolation Capable
• Frequency - Switching: Up to 500kHz
• Voltage - Supply (Vcc/Vdd): 7.6V ~ 30V
• Synchronous Rectifier: No
• ECCN: EAR99
• Topology: Boost, Flyback
• Mounting Type: Through Hole
• Clock Sync: No
• Number of Outputs: 1
• Control Features: Frequency Control
• Duty Cycle (Max): 96%
• Output Phases: 1
• HTSUS: 8542.39.0001
• Package: Tube
• Base Product Number: UC2843

The UC2843BN stands out with its ability to operate within a wide voltage range and its compatibility with various topologies. Its maximum duty cycle of 96% ensures efficient power conversion, making it ideal for applications requiring high efficiency and minimal power loss. The through-hole mounting type provides a secure and reliable physical connection, suitable for environments where mechanical stability is crucial.

UC2843BN Applications

The UC2843BN is well-suited for a range of applications due to its versatility and robust performance. It is particularly ideal for:

• Power Supplies: The UC2843BN's ability to operate in boost and flyback topologies makes it a suitable choice for power supplies in various electronic devices.
• DC-DC Converters: Its wide supply voltage range and high switching frequency capability allow for efficient power conversion in DC-DC converter designs.
• Industrial Equipment: The through-hole mounting and robust design make it suitable for industrial applications where reliability and durability are paramount.

Conclusion of UC2843BN

The UC2843BN, despite being marked as obsolete, continues to offer significant value in the power management space. Its wide voltage range, high switching frequency, and compatibility with multiple topologies make it a versatile and reliable choice for various applications. The device's robust design and efficient power conversion capabilities ensure it remains a preferred option for engineers and designers in need of a dependable current mode PWM controller.