Texas Instruments

UC3843AD8G4  

Power Supply Controllers, Monitors

UC3843AD8G4 Description

The UC3843AD8G4 is a highly versatile PWM controller designed for a wide range of power management applications. Manufactured by Texas Instruments, this device is part of the UCx84xA series and is housed in a surface-mount 8SOIC package, making it ideal for compact and efficient circuit designs. The UC3843AD8G4 operates within a supply voltage range of 7.6V to 30V and draws a supply current of 11 mA, ensuring reliable performance across various power supply conditions. Its operating temperature range of 0°C to 70°C (TA) makes it suitable for use in a of variety environments, from consumer electronics to industrial applications.

UC3843AD8G4 Features

The UC3843AD8G4 offers several key features that set it apart from similar PWM controllers:

• Wide Operating Voltage Range: With a supply voltage range of 7.6V to 30V, the UC3843AD8G4 can accommodate a broad spectrum of power supply requirements, making it highly adaptable for different applications.
• Low Supply Current: Drawing only 11 mA, this PWM controller is highly efficient, minimizing power consumption and heat generation, which is crucial for maintaining system reliability and longevity.
• Surface-Mount Packaging: The 8SOIC package type ensures easy integration into modern, space-constrained designs, facilitating compact and high-density circuit boards.
• Compliance and Safety: The UC3843AD8G4 is REACH unaffected and RoHS3 compliant, adhering to stringent environmental and safety standards. This makes it suitable for use in markets with strict regulatory requirements.
• Moisture Sensitivity Level (MSL): With an MSL of 1 (Unlimited), the UC3843AD8G4 is highly resistant to moisture, ensuring robust performance in various environmental conditions.

UC3843AD8G4 Applications

The UC3843AD8G4 is a versatile PWM controller suitable for a wide array of power management applications, including:

• Switching Power Supplies: Ideal for designing efficient and compact switching power supplies, the UC3843AD8G4 can help achieve high power density and improved performance.
• DC-DC Converters: Its wide operating voltage range and low supply current make it an excellent choice for DC-DC conversion applications, where efficiency and reliability are paramount.
• Inverters: The UC3843AD8G4 can be used in inverter designs to control the switching of power devices, ensuring stable and efficient power conversion.
• Motor Control: The PWM controller can be employed in motor control applications to regulate motor speed and torque, providing precise control and energy efficiency.

Conclusion of UC3843AD8G4

The UC3843AD8G4 from Texas Instruments is a robust and versatile PWM controller that offers significant advantages for power management applications. Its wide operating voltage range, low supply current, and surface-mount packaging make it an ideal choice for compact and efficient circuit designs. Compliance with environmental and safety standards ensures its suitability for a broad range of markets. Whether used in switching power supplies, DC-DC converters, inverters, or motor control applications, the UC3843AD8G4 delivers reliable performance and efficiency, making it a standout choice in the power management industry.

UC3843AD8G4 Documents

Download datasheets and manufacturer documentation for UC3843AD8G4

Datasheets :

UC1842-45, UC2842-45, UC3842-45      

HTML Datasheet :

UC1842-45, UC2842-45, UC3842-45      

PCN Design/Specification :

UCYYY 13/DEC/2017