Product Overview: Texas Instruments UCC2813PWTR-4

The UCC2813PWTR-4 is a high-performance, low-power BiCMOS current-mode pulse width modulator (PWM) integrated circuit manufactured by Texas Instruments. It is part of the UCC2813-x series, where 'x' refers to the various versions with different under-voltage lockout thresholds. This particular model, the -4 version, is designed to offer precise power supply control and is suitable for a wide range of applications, including power converters, switch-mode power supplies, and DC-DC converters.

Enclosed in a TSSOP-14 package, the UCC2813PWTR-4 boasts a compact footprint, making it ideal for space-constrained applications. The device operates at a fixed frequency that can be programmed by an external resistor, providing designers with flexibility in optimizing their power supply designs for efficiency and component size.

The UCC2813PWTR-4 features an extended temperature range, making it reliable in various environmental conditions. Its advanced BiCMOS construction ensures low power consumption while maintaining high-speed operation. The device incorporates a range of protective features, such as under-voltage lockout (UVLO), over-current protection, and thermal shutdown, which safeguard the power supply and the end application against fault conditions.

Key features of the UCC2813PWTR-4 include:

• Low startup and operating current
• High current totem pole output for driving a power MOSFET
• Trimmed oscillator discharge current for precise duty cycle control
• Current mode operation for improved transient response and noise immunity
• Frequency programmability with a single external resistor
• Soft-start capability to prevent inrush current at startup
• Under-voltage lockout with hysteresis
• 70-ns typical response from shutdown

Designers can take advantage of the UCC2813PWTR-4's robust feature set to create efficient, reliable, and compact power supply solutions. Its ease of use, coupled with Texas Instruments' support and resources, makes it an excellent choice for both new designs and upgrades to existing power systems.

For detailed technical specifications, application notes, and support documentation, customers can visit the Texas Instruments website or contact their local sales office.