Texas Instruments UCC3813PWTR-5G4 Low-Power BiCMOS Current-Mode PWM Controller

The UCC3813PWTR-5G4 is a versatile and robust low-power Pulse Width Modulation (PWM) controller from Texas Instruments, designed for efficient power supply operations. This advanced controller is part of the UCC3813x family and is particularly suitable for off-line and DC-to-DC converter applications requiring a wide range of input voltages and output power.

Featuring BiCMOS construction, the UCC3813PWTR-5G4 combines the low-power benefits of CMOS with the speed and precision of bipolar transistors. This hybrid technology ensures that the device offers both high performance and reliability, making it an excellent choice for demanding power management tasks. The PWM controller operates at a fixed frequency that is externally programmable, providing designers with flexibility to tailor the performance to specific application requirements.

With its integrated features, such as a trimmed oscillator for precise frequency control, a temperature-compensated reference, high current totem-pole output capable of driving a power MOSFET, and built-in soft-start functionality, the UCC3813PWTR-5G4 simplifies the design of power circuits while enhancing performance. It also includes protective features like overcurrent protection and an under-voltage lockout (UVLO) with hysteresis, ensuring the safety and longevity of the end application.

The device is available in a 14-pin TSSOP (Thin Shrink Small Outline Package) that is optimized for space-constrained applications. Its surface-mount package is suitable for automated assembly processes, and the device is designed to meet the stringent quality standards expected from Texas Instruments.

Whether used in power supplies for personal computers, telecom equipment, or portable devices, the UCC3813PWTR-5G4 is engineered to deliver stable and efficient power control. Its combination of advanced features, compact form factor, and ease of use makes it an ideal choice for engineers looking to create sophisticated power systems with confidence.