STMicroelectronics

STLQ50C18R

STLQ50C18R Description

The STLQ50C18R is a high-performance linear voltage regulator designed by STMicroelectronics. This device is specifically tailored for applications requiring a stable and efficient power supply with minimal power consumption. The STLQ50C18R features a fixed output voltage of 1.8V and can deliver a maximum output current of 50mA. It is housed in a compact SOT323-5 package, making it ideal for space-constrained designs. The regulator operates with an input voltage range up to 12V and maintains a low dropout voltage of 0.7V at 50mA, ensuring high efficiency even at low input-to-output voltage differentials.

STLQ50C18R Features

• Fixed Output Voltage: The STLQ50C18R provides a stable output voltage of 1.8V, ensuring consistent power delivery to sensitive electronic components.
• Low Dropout Voltage: With a maximum dropout voltage of 0.7V at 50mA, this regulator maintains high efficiency, especially in applications where the input voltage is close to the output voltage.
• Low Quiescent Current: The device consumes only 5µA of quiescent current, making it highly suitable for battery-powered and low-power applications.
• Over Current and Over Temperature Protection: Built-in protection features safeguard the regulator and connected components from damage due to overcurrent and overtemperature conditions.
• High PSRR: The regulator offers a high power supply rejection ratio (PSRR) of 30dB at 120Hz, effectively filtering out noise from the input supply and ensuring a clean output voltage.
• Compact Packaging: The SOT323-5 package provides a small footprint, making it ideal for dense PCB layouts and compact designs.
• Surface Mount Technology: The STLQ50C18R is designed for surface mount applications, facilitating automated assembly processes and improving overall reliability.
• Compliance and Reliability: The device is REACH unaffected and RoHS3 compliant, ensuring environmental and regulatory standards are met. It also has a moisture sensitivity level (MSL) of 1, indicating unlimited exposure to ambient conditions without degradation.

STLQ50C18R Applications

The STLQ50C18R is well-suited for a variety of applications where low power consumption, high efficiency, and compact size are critical. Some specific use cases include:

• Battery-Powered Devices: Ideal for portable electronics such as smartphones, tablets, and wearable devices where battery life and space are paramount.
• Low-Power Sensors: Suitable for IoT devices and sensors that require stable power supply with minimal power draw.
• Medical Devices: Applicable in medical equipment where reliability and low power consumption are essential.
• Consumer Electronics: Useful in a range of consumer electronics that demand efficient power management and small form factors.

Conclusion of STLQ50C18R

The STLQ50C18R from STMicroelectronics stands out as a highly efficient and reliable linear voltage regulator. Its low dropout voltage, low quiescent current, and high PSRR make it an excellent choice for applications requiring stable power delivery with minimal power loss. The compact SOT323-5 package and surface mount technology further enhance its suitability for modern, space-constrained designs. With built-in protection features and compliance with environmental regulations, the STLQ50C18R ensures robust performance and reliability in a wide range of applications.