TPS75218QPWP

Introduction

The TPS75218QPWP is a low-power, low-dropout linear regulator. This device is suitable for applications that require a regulated output voltage without supplying too much power. It is both cost and space effective, making it ideal for space-constrained or power-sensitive applications. Many applications are powered by the TPS75218QPWP, such as digital signage, hand-held scanning devices, portable medical equipment, power over Ethernet (POE) Powered Devices (PD)s and thin clients.

Application field of TPS75218QPWP

The TPS75218QPWP is a low-power, low-dropout linear regulator commonly used in digital signage, hand-held scanning devices, portable medical equipment, power over Ethernet (POE) Powered Devices (PDs) and thin clients. It provides an output voltage of 2.5 V, enough to power most portable electronic devices and peripheral circuitry. This device has several features that make it suitable for space-constrained or power-sensitive applications, such as low power consumption and low dropout voltage, making it cost and space effective.

In addition, the TPS75218QPWP is equipped with built-in high-precision voltage references and integrated power-on reset and logic input. This ensures a reliable power supply to sensitive equipment and circuitry. The device also has a wide range of protection features, including short-circuit protection, over temperature shut-down, input over tension, and input under voltage.

Working principle of TPS75218QPWP

The TPS75218QPWP works by taking an input voltage from a battey or other power source, and then regulating the output voltage. This is done through two main components: the voltage reference and error amplifier. The voltage reference sets the output voltage at a particular level, and the error amplifier compares it to the actual output voltage, and then takes corrective action to maintain the output voltage at the pre-set level. If the output voltage starts to drift, the error amplifier will increase or decrease the output voltage accordingly.

The TPS75218QPWP also includes a low-quiescent current power-on reset (POR) circuit that monitors its own regulated output voltage. If the output voltage drops below a certain level (typically 1.5 V), the POR circuit will reset the output voltage to its original level, preventing the device from failing in critical applications.

Conclusion

The TPS75218QPWP is a low-dropout linear regulator suitable for space-constrained or power-sensitive applications. It has many features that make it ideal for digital signage, hand-held scanning devices, portable medical equipment, power over Ethernet (POE) Powered Devices (PDs) and thin clients, including high-precision voltage references, high-precision voltage error amplifier, and integrated power-on reset and logic input. It also features short-circuit protection, over temperature shut-down, input over tension, and input under voltage.