STLQ015XG18R

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PMIC - Voltage Regulators - Linear

STLQ015XG18R is a linear voltage regulator developed by STMicroelectronics, a global semiconductor leader that specializes in developing advanced integrated circuits, on a 17-pin PowerSSO-17 package. The device is designed to provide assistance in regulating and providing an output up to 18V, while simultaneously offering superior accuracy and response time in embedded applications. It also features excellent power integrity, transient and thermal performance, allowing it to meet the most demanding power requirements.

Application Field

STLQ015XG18R is ideally suited for embedded applications in industrial, automotive, home appliance and consumer electronics markets. It is particularly suitable for applications such as motor control, power system control and instrumentation. This device is also used in radios, audio and visual products, computers and peripherals.

Working Principle

STLQ015XG18R is capable of generating varying voltage output from the input voltage it receives. It functions by transforming the input voltage into a regulated output voltage through a four-stage operation. The four stages are input conditioning, power stage, feedback control and current limiting. This series of stages prevents voltage drops or spikes which can cause electromagnetic interference and cause adverse effects in the electronics.

The input conditioner is responsible for optimizing the input voltage characteristics and is used to achieve overload protection by sinking or sourcing current. The power stage, linear regulator, is used to generate a regulated output voltage by controlling the output current. The feedback control loop monitors the output voltage using an onboard analog-to-digital converter which adaptively reduces the feedback reference voltage based on the input voltage regulation.

Finally, the current limit stage verifies that an output current below the specified over-current limit is maintained before the output voltage is allowed to settle. Once the output voltage has settled, the device is considered ‘on’ and in regulation.

Benefits and Features

STLQ015XG18R is designed to offer efficient power usage and reduced emissions, while providing a dynamic response to the demands of a wide range of embedded applications. In addition,it features a low quiescent current of 5 mA in Regulation and 2 mA in Standby mode, thus allowing it to be used in applications which require only minimal energy consumption. Furthermore, the device offers excellent transient response and line regulation, providing reliable and accurate power when complete load protection is needed.

It also features an adjustable input under-voltage lock-out and an adjustable frequency of 250KHz-1.5MHz for fast transient response. Additionally, the device offers protection under over-voltage, thermal overload, external capacitor voltage derating, and over-temperature. This makes it the ideal solution for protecting sensitive electronics and enhancing the overall performance of embedded applications.

Conclusion

STLQ015XG18R is a linear voltage regulator designed to provide persistent and reliable power to embedded applications. It is capable of regulating voltage output from input voltage, while offering superior efficiency and reduced emissions. The device is designed to meet the most demanding power requirements, offering excellent transient and thermal performance, an adjustable input under-voltage lock-out and an adjustable frequency of 250KHz-1.5MHz for fast transient response. Furthermore, it features various protection functions to ensure safe operation, making it the ideal solution for those who need reliable and accurate power.

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