UC3843BNG
Manufacturer: ON Semiconductor
Part Number: UC3843BNG
| Attribute | Value |
| cate_name | DC DC Converters |
| Datasheet | UC3843BNG ON Semiconductor |
| rohs | Compliance |
| reference_package | PDIP-8 |
| mounting | Through hole mounting |
| application_level | Commercial |
| lifecycle | On sale |
| spm | bulk,Tube |
| min_operating_temperature | 0℃(TA) |
| max_operating_temperature | 70℃(TA) |
| length_width_height | 5.33mm(height) |
| functions | Step-Up，Step-Up/Step-Down |
| max_input_voltage | 25V |
| max_output_voltage | 5.1V |
| min_input_voltage | 12V |
| min_output_voltage | 4.9V |
| number_of_outputs | 1 |
| output_type | Transistor Driver |
| switching_frequency | Up~500KHz |
| synchronous_rectifier | No |
| topology | Boost，Flyback |
Overview:
The ON Semiconductor UC3843BNG is a high-performance, current-mode PWM controller designed for offline power supplies, battery chargers, and DC-to-DC converters. This versatile controller is widely used in various applications due to its robustness and efficiency.
Key Features:
1. High-Frequency Operation: Supports operation at high switching frequencies, which allows for smaller and lighter designs.
2. Current-Mode Control: Provides superior line and load regulation with fast transient response.
3. Internal Oscillator: Eliminates the need for external timing components, simplifying the design.
4. Soft-Start Feature: Reduces inrush current and provides a smooth start-up.
5. Over-Current Protection: Protects the system from damage due to excessive current.
6. Thermal Shutdown: Safeguards the device from overheating.
7. Spread Spectrum: Minimizes electromagnetic interference (EMI) for compliance with stringent EMI standards.
Development Support:
ON Semiconductor provides comprehensive development support for the UC3843BNG, including detailed datasheets, application notes, and design examples. This support helps engineers to quickly integrate the controller into their designs and troubleshoot any issues that may arise.
Application Areas:
- Offline Power Supplies: For AC-to-DC conversion in a variety of power electronics.
- Battery Chargers: Especially for fast-charging applications requiring high efficiency and reliability.
- DC-to-DC Converters: In systems requiring voltage step-up or step-down conversion.
- Motor Controllers: For brushless DC motors in applications like drones and robotics.
Parameter Introduction:
- Input Voltage Range: Wide input voltage range for compatibility with different power sources.
- Output Power: Depending on the design, can handle a variety of power levels.
- Switching Frequency: Typically in the range of tens to hundreds of kHz.
- Operating Temperature: Designed to function in a wide range of temperatures, ensuring reliability in various environments.
Frequently Asked Questions (FAQs):
1. Q: Can the UC3843BNG work with a wide range of input voltages?
A: Yes, the UC3843BNG is designed to handle a wide input voltage range, making it suitable for global applications.
2. Q: What kind of protection does the UC3843BNG offer?
A: It offers over-current protection and thermal shutdown to protect the system from potential damage.
3. Q: How does the UC3843BNG help in reducing EMI?
A: The integrated spread spectrum feature helps in reducing EMI, making the design more compliant with EMI standards.
4. Q: Is there software available for simulation and design optimization using the UC3843BNG?
A: While there may not be specific software dedicated to the UC3843BNG, engineers can use various power electronics simulation tools to design and optimize systems using this controller.
5. Q: What kind of support can I expect from ON Semiconductor during development?
A: ON Semiconductor offers a range of support including technical documentation, design tools, and expert assistance to help engineers during the development process.
The UC3843BNG is a testament to ON Semiconductor's commitment to providing high-quality, reliable power management solutions for a variety of applications. Its feature set and support ecosystem make it a preferred choice for engineers looking to implement efficient and robust power conversion systems.
Please refer to the product rule book for details.
ON Semiconductor operates a responsive, reliable, world-class supply chain and quality program, and a network of manufacturing facilities, sales offices and design centers in key markets throughout North America, Europe, and the Asia Pacific regions. The company is known for its strong commitment to sustainability and environmental responsibility, which is integral to the way it develops, manufactures, and markets its technologies.
Founded in 1999 through the spin-off of Motorola's Semiconductor Components Group, ON Semiconductor has rapidly evolved, growing through strategic acquisitions and a focus on developing innovative products. The company has acquired several other semiconductor companies, including Fairchild Semiconductor and AMI Semiconductor, which have expanded its product offerings and market reach.
ON Semiconductor's product line includes power management ICs, analog ICs, discrete devices, image sensors, and custom devices. The company is particularly noted for its high-performance silicon solutions for energy-efficient power management, including regulators, converters, and controllers, which are crucial for reducing global energy consumption.
The company also offers a wide range of sensors, including CMOS image sensors, which are widely used in automotive, industrial, and consumer applications. These sensors are designed to provide superior imaging capabilities under a variety of lighting conditions, contributing to advancements in areas such as autonomous driving and machine vision.
In the discrete semiconductor market, ON Semiconductor supplies a range of products, including MOSFETs, diodes, and transistors. These components are essential in virtually all types of electronic devices, from mobile phones to industrial equipment, helping to enhance performance and efficiency.
ON Semiconductor is dedicated to innovation and quality. It operates a network of design centers where engineers develop new products and technologies, working closely with customers to understand their specific needs and challenges. This customer-focused approach ensures that the company's products are aligned with market demands and technological trends.
The company's commitment to sustainability is evident in its various green initiatives, including efforts to reduce waste and energy consumption in its operations and supply chain. ON Semiconductor is also actively involved in community engagement and philanthropy, supporting various educational and charitable causes around the world.
Overall, ON Semiconductor stands out as a key player in the semiconductor industry, with its broad product portfolio, strategic growth initiatives, and dedication to sustainability and customer satisfaction. Its technologies are at the heart of the next generation of electronic devices, driving innovation across multiple sectors and helping to create a smarter, more connected world.
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