TL1963A-33KTTR – TEXAS INSTRUMENTS

The Texas Instruments TL1963A-33KTTR is a 3.3V, 1A synchronous step-down converter in a compact, thermally enhanced 16-pin QFN package (4x4mm). This device utilizes a constant-frequency, current-mode control architecture, offering excellent transient response and line regulation. Its internal synchronous rectifier minimizes power loss, achieving high efficiency exceeding 90% at typical operating conditions. Input voltage range spans 4.5V to 18V, making it adaptable to various battery-powered and mains-powered applications. The integrated soft-start function minimizes inrush current, protecting sensitive components during power-up. A precise 3.3V output is maintained via internal compensation, eliminating the need for external components for many applications._x000D_
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Key specifications include a 300kHz switching frequency, enabling the use of smaller, cost-effective external components. The TL1963A-33KTTR features overcurrent protection, thermal shutdown, and undervoltage lockout ensuring robust operation. Common use cases involve powering microcontrollers, sensors, and other low-power peripherals in space-constrained designs where high efficiency and tight voltage regulation are paramount. Its small footprint and high efficiency make it ideal for portable devices and applications requiring compact power solutions. The device’s integrated protection features simplify design and reduce the component count, leading to a lower bill of materials.