Texas Instruments

UC3843AD  

Power Supply Controllers, Monitors

UC3843AD Description

The UC3843AD is a high-performance PWM controller designed for a wide range of power management applications. Manufactured by Texas Instruments, this IC belongs to the UCx84xA series and is housed in a 14-pin SOIC package, making it suitable for surface mount applications. The UC3843AD operates within a temperature range of 0°C to 70°C (TA), ensuring reliable performance in various environmental conditions.

Key specifications include a supply voltage range of 7.6V to 30V and a supply current of 11 mA. The UC3843AD is REACH unaffected and RoHS3 compliant, aligning with stringent environmental regulations. It is also classified under HTSUS code 8542.39.0001 and has a moisture sensitivity level (MSL) of 1, indicating it is suitable for unlimited exposure to ambient conditions.

UC3843AD Features

The UC3843AD offers several unique features that set it apart from similar models:

• Wide Operating Voltage Range: The ability to operate between 7.6V and 30V makes it versatile for various power supply applications.
• Low Supply Current: With a supply current of only 11 mA, the UC3843AD is highly efficient, minimizing power consumption.
• Surface Mount Packaging: The 14SOIC package is ideal for compact designs and surface mount technology (SMT) applications.
• Environmental Compliance: REACH unaffected and RoHS3 compliant, ensuring it meets global environmental standards.
• Moisture Sensitivity Level 1: Suitable for unlimited exposure to ambient conditions, reducing the risk of moisture-related damage.

UC3843AD Applications

The UC3843AD is a versatile PWM controller suitable for a variety of applications:

• DC-DC Converters: Ideal for controlling the switching frequency and duty cycle in DC-DC converters, ensuring efficient power conversion.
• Switching Power Supplies: Provides precise control for switching power supplies, enhancing performance and reliability.
• Inverters: Suitable for applications requiring precise control of inverter circuits, such as solar inverters and motor drives.
• Battery Chargers: Can be used in battery charging circuits to regulate the charging process and protect the battery from overcharging.

Conclusion of UC3843AD

The UC3843AD is a robust and versatile PWM controller that offers significant advantages over similar models. Its wide operating voltage range, low supply current, and compact surface mount packaging make it an excellent choice for a variety of power management applications. The UC3843AD's compliance with environmental regulations and its ability to withstand moisture further enhance its reliability and suitability for diverse environments. Whether used in DC-DC converters, switching power supplies, inverters, or battery chargers, the UC3843AD delivers high performance and efficiency, making it a preferred choice for engineers and designers in the electronics industry.

UC3843AD Documents

Download datasheets and manufacturer documentation for UC3843AD

Datasheets :

UC1842A-45A, UC2842A-45A, UC3842A-45A      

HTML Datasheet :

UC1842A-45A, UC2842A-45A, UC3842A-45A      

PCN Design/Specification :

Mult Devices Font 21/Apr/2018