LM536355QRNLRQ1

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Introduction

The LM536355QRNLRQ1 is an integrated circuit (IC) mainly used as a DC/DC voltage regulator. It is a high efficiency switching regulator module in the Power Management IC (PMIC) category. The device is specifically designed with optimized switching waveforms, small inductor size, and fast transient response, which makes it a suitable solution for applications that need high reliability and performance.

Application Field

The LM536355QRNLRQ1 voltage regulator can be used in charger, battery powered, notebook, and vehicle applications. It is also suitable for powering displays, automotive cameras and other consumer electronics devices. In addition, the DC/DC switching regulator module can be used in industrial and consumer applications, including but not limited to electrochemical metering, audio systems, medical equipment, and renewable energy solutions.

Working Principle

The LM536355QRNLRQ1 DC/DC switching regulator module works by using a switching converter to step up or step down the input voltage to a regulated output voltage. It is a synchronous buck converter, meaning that it employs a pair of switches (typically MOSFETs) in series with an inductor, a capacitor, and the output voltage sensing circuit. The series of switches is driven by a regulating circuit, controlling the output voltage by changing the duty cycle (on/off time) of the switching element. This way, output voltage is regulated at the required level.

The device operates in different modes: stand-by, burst, and continuous. The stand-by mode is used to reduce power draw during periods when no load is present. The burst mode reduces power consumption when the load current is low and the output voltage needs to be maintained. The continuous mode is used when the load current is high and the output voltage needs to be constantly regulated.

The device comes with input under-voltage and over-voltage protection. In addition, it also incorporates POR (Power-On Reset) and an adjustable current limit. An adjustable soft start allows the output voltage to rise gradually to avoid large inrush current.

The LM536355QRNLRQ1 has low quiescent current, low noise operation, and fast transient response times. It is also capable of operating over a wide temperature range, from –40 °C to +125 °C.

Conclusion

The LM536355QRNLRQ1 DC/DC voltage regulator can be used in various applications where a fast transient response and efficient power conversion is required. The device is highly reliable and offers a wide variety of protection functions, such as input under-voltage and over-voltage protection, and adjustable current limit. The device is capable of operating over a wide temperature range and offers high efficiency with low quiescent current and low noise output.

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