Texas Instruments

UCC38C40P  

DC DC Switching Controllers

UCC38C40P Description

The UCC38C40P is a versatile DC-DC switching controller IC designed for a variety of power conversion applications. Manufactured by Texas Instruments, this obsolete yet highly reliable component is ideal for use in boost, flyback, and forward converter topologies. The UCC38C40P features a transistor driver output type with a positive output configuration, making it suitable for driving power transistors efficiently. It operates within a supply voltage range of 6.6V to 18V and can handle switching frequencies up to 1MHz, ensuring high performance in demanding applications.

UCC38C40P Features

• Output Type: Transistor Driver
• Output Configuration: Positive
• Frequency - Switching: Up to 1MHz
• Voltage - Supply (Vcc/Vdd): 6.6V to 18V
• Operating Temperature: 0°C to 70°C (TJ)
• Number of Outputs: 1
• Control Features: Frequency Control
• Duty Cycle (Max): 96%
• Output Phases: 1
• Package: Tube
• Compliance: REACH Unaffected, ROHS3 Compliant, Moisture Sensitivity Level 1 (Unlimited)

The UCC38C40P offers several unique advantages over similar models. Its ability to operate at high switching frequencies up to 1MHz allows for the use of smaller inductors and capacitors, reducing the overall size and cost of the power supply. The wide supply voltage range ensures compatibility with various power sources, making it suitable for a broad range of applications. Additionally, the 96% maximum duty cycle provides high efficiency in power conversion, which is crucial for energy-saving designs.

UCC38C40P Applications

The UCC38C40P is well-suited for applications requiring efficient power conversion and control. Its versatility makes it ideal for:

• Boost Converters: Used in applications where an output voltage higher than the input voltage is required, such as in LED lighting and automotive electronics.
• Flyback Converters: Commonly used in low-power isolated power supplies, such as those found in consumer electronics and medical devices.
• Forward Converters: Suitable for higher power applications where efficiency and reliability are critical, such as in industrial power supplies and telecommunications equipment.

The UCC38C40P's ability to control frequency and duty cycle provides precise regulation of output voltage and current, ensuring stable performance across varying load conditions. Its compact 8DIP package and through-hole mounting type make it easy to integrate into existing designs and new projects alike.

Conclusion of UCC38C40P

The UCC38C40P is a robust and versatile DC-DC switching controller that offers high performance and reliability in a variety of power conversion applications. Despite being marked as obsolete, its technical specifications and compliance with industry standards make it a valuable component for engineers and designers. Its ability to operate at high frequencies, wide supply voltage range, and high maximum duty cycle provide significant advantages over similar models. Whether used in boost, flyback, or forward converter topologies, the UCC38C40P ensures efficient and stable power conversion, making it an ideal choice for a wide range of applications in the electronics industry.

UCC38C40P Documents

Download datasheets and manufacturer documentation for UCC38C40P

Datasheets :

UCC28C40-45, UCC38C40-45      

PCN Obsolescence/ EOL :

Mult Dev EOL 10/Mar/2022       PDIP 16-Mar-2022      

HTML Datasheet :

UCC28C40-45, UCC38C40-45