TPS78228DDCT – TEXAS INSTRUMENTS

The TPS78228DDCT is a low-dropout (LDO) linear regulator from Texas Instruments, housed in a small, thermally enhanced 6-pin WCSP (WSON) package. It operates with an input voltage range of 2.7V to 5.5V, providing a fixed 1.8V output with a maximum output current of 250mA. Key features include a quiescent current of only 35µA, enabling significant power savings in battery-powered applications. Its ultra-low noise performance (15µVRMS) makes it ideal for sensitive analog circuits requiring clean power rails. The device incorporates overcurrent protection, thermal overload protection, and short-circuit protection, enhancing its robustness. Its high PSRR (Power Supply Rejection Ratio) minimizes the impact of input voltage fluctuations on the output. Typical applications include powering sensitive analog-to-digital converters (ADCs), microcontrollers, and other low-power integrated circuits where minimal noise and high efficiency are paramount. The TPS78228DDCT’s small footprint and low heat dissipation make it particularly suitable for space-constrained designs in portable and mobile electronics. Its fixed output voltage simplifies design, reducing component count and board space compared to adjustable LDOs.