TPS73218DCQ

The TPS73218DCQ is a low-voltage linear regulator that offers highperformance, low-noise and small-size solutions. It is a low-dropout (LDO) regulator designed for powering advanced handheld and batterypowered equipment that has low quiescent current and high efficiency ratings. This is due to its advanced high-efficiency architecture and extremely low output noise. This combination makes the TPS73218DCQ well suited for powering sensitive digital circuits in applications where extremely low output noise and low power consumption are crucial such as amplifiers, portable digital devices, etc.

The TPS73218DCQ is a monolithic linear voltage regulator that is based on the 3-terminal switched-mode architecture. Its architecture relies on three major building blocks: an output voltage feedback loop, a feedback-error amplifier, and a MOSFET-mode operation SYNCFET. The output voltage is set and regulated through an external feedback network consisting of an adjustable resistive divider. The error amplifier’s output is connected to an external SYNCFET which is used to regulate the output voltage. This SYNCFET allows the TPS73218DCQ to operate at very low quiescent current while providing a fast turn-on and turn-off transient response.

The performance of the TPS73218DCQ is defined by the combination of its low quiescent current (1.75 mA typical), output voltage accuracy (2.2% maximum), high current limit (3A), low output noise and fast transient response time (<750ns) to line and load changes. In addition, the device offers a wide input voltage range from 2.5V to 5.5V, which helps to maintain a low output voltage even at low input voltages. This enhanced flexibility makes the device an ideal solution for a wide range of applications including automotive, solid state drives (SSDs) and specialized high-end industrial solutions.

The TPS73218DCQ is an ideal solution for powering advanced handheld and battery-powered equipment. It is also a suitable solution for circuit boards and systems where ultra-low quiescent current and low noise performance are needed in order to reduce heat dissipation and extend battery life. Finally, its very low output noise makes it suitable for many audio, video and other applications where minimal noise is required.