Texas Instruments UCC3808APWTR-2 Low-Power BiCMOS Current-Mode PWM Controller

The UCC3808APWTR-2 from Texas Instruments is a versatile and efficient low-power pulse width modulation (PWM) controller designed for a wide range of power supply applications. This device is part of the UCC3808 family, which is well-known for its robust performance and reliability, making it an ideal choice for designers looking to create compact and energy-efficient power systems.

Key Features:

• Current-Mode Control: The UCC3808APWTR-2 implements current-mode control which provides inherent line feed-forward, cycle-by-cycle current limiting, and ease of loop compensation.
• Low Startup and Operating Current: This device features a very low startup current of 0.5μA and a low operating current of 1.5mA, which significantly enhances the overall efficiency of the power supply.
• Programmable Soft Start: The soft-start feature limits the inrush current during startup, thereby reducing stress on the power components and extending their lifespan.
• Frequency Flexibility: The operating frequency can be programmed to suit various applications, which allows for optimization of transformer and power stage design.
• Trimmed Oscillator Discharge Current: This ensures accurate and repeatable frequency setting over the entire range of temperature and power supply variations.
• Under-Voltage Lockout (UVLO): Both the startup and operating UVLO thresholds are programmed accurately to ensure reliable operation of the power supply.

Applications:

• Off-line power supplies
• DC-DC converters
• Portable power devices
• Telecommunications equipment
• Green-mode power supplies

The UCC3808APWTR-2 is packaged in a TSSOP-8 (Thin Shrink Small Outline Package), which is ideal for space-constrained applications. Its advanced features and low-power operation make it a smart choice for designers looking to create efficient and reliable power solutions. With the backing of Texas Instruments' quality and support, the UCC3808APWTR-2 is set to be a key component in innovative power management designs.