Texas Instruments

UC3843D  

Power Supply Controllers, Monitors

UC3843D Description

The UC3843D is a high-performance PWM controller designed for a wide range of power management applications. Manufactured by Texas Instruments, this IC belongs to the UCx84x series and is housed in a 14-pin SOIC package, making it suitable for surface-mount applications. The UC3843D operates within a supply voltage range of 12V to 28V and features a supply current of 11 mA, ensuring efficient power usage. It is rated for an operating temperature range of 0°C to 70°C, making it ideal for use in environments with moderate temperature variations.

UC3843D Features

The UC3843D offers several key features that set it apart from similar PWM controllers:

• Wide Operating Voltage Range: The UC3843D can operate within a supply voltage range of 12V to 28V, providing flexibility and compatibility with various power supply systems.
• Low Supply Current: With a supply current of only 11 mA, the UC3843D ensures minimal power consumption, making it suitable for energy-efficient designs.
• Surface-Mount Compatibility: The UC3843D is available in a surface-mount package, facilitating easy integration into compact and high-density PCB designs.
• Compliance and Safety: The UC3843D is REACH unaffected and RoHS3 compliant, ensuring it meets stringent environmental and safety standards. It also has a moisture sensitivity level (MSL) of 1, making it suitable for a wide range of manufacturing processes.
• Active Product Status: As an active product, the UC3843D is readily available and supported by Texas Instruments, ensuring long-term availability and technical support.

UC3843D Applications

The UC3843D is well-suited for a variety of power management applications, including:

• Switching Power Supplies: The UC3843D's PWM control capabilities make it ideal for designing efficient switching power supplies, ensuring stable and reliable power delivery.
• DC-to-DC Converters: Its ability to operate within a wide voltage range and low supply current makes it suitable for DC-to-DC conversion applications, where compact size and high efficiency are critical.
• Inverter Circuits: The UC3843D can be used in inverter circuits to control the switching of power devices, ensuring precise timing and control.
• Battery Chargers: The UC3843D's PWM control can be utilized in battery charger designs to manage the charging process efficiently and safely.

Conclusion of UC3843D

The UC3843D is a versatile and efficient PWM controller that offers a wide range of features and benefits for power management applications. Its wide operating voltage range, low supply current, and surface-mount compatibility make it an ideal choice for designers looking to create compact and energy-efficient power solutions. With its compliance to environmental and safety standards, the UC3843D ensures long-term reliability and sustainability. Whether used in switching power supplies, DC-to-DC converters, inverter circuits, or battery chargers, the UC3843D provides reliable performance and precise control, making it a standout choice in the power management industry.

UC3843D Documents

Download datasheets and manufacturer documentation for UC3843D

Images :

Mechanical Outline Drawing      

PCN :

Product Change Notification 2024-08-28 (PDF)       Product Change Notification 2024-10-16 (PDF)      

Product Catalogs :

Power Management Guide 2018 (Rev. R)      

Application Notes :

DN-43 Simple Techniques to Generate a Negative Voltage Bias Supply      

SPICE Models :

UCC28C43 PSpice Transient Model       UCCx8C43 Unencrypted PSpice Transient Model