LMS3655LQRNLRQ1

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PMIC - Voltage Regulators - DC DC Switching Regulators

The LMS3655LQRNLRQ1 is one of the Quick Response Non-Synchronous switching regulators from Texas Instruments. This PMIC is specified for 3.3V and can provide a maximum output current of up to 300mA, with a stepped output range of between 8.0V and 1.25V. This DC-DC Switching Regulator provides very fast transient response for systems requiring fast load transients and low output noise.

Application

The LMS3655LQRNLRQ1 is designed to suit applications such as Application Processors, Single Board Computers and Industrial Process Control in smartphones, tablets, along with industrial and embedded systems. This device helps to reduce the power consumption and lower the BOM cost when compared with a traditional linear regulator, or even a linear regulator and capacitor filter combination.

Working Principle

The LMS3655LQRNLRQ1 is a non-synchronous boost regulator, which means it can boost the input voltage of the device and then use a single inductor to store energy before sending it back to the output on a continuous basis. This allows it to provide a output voltage that is higher than the input voltage, while also providing a current flow to the load through the output switching transistor. The regulator will sense the load current on its output and regulate the load current accordingly.

The device will have one or more output voltage stages depending on the device configuration, with the output voltage being adjusted by changing the duty cycle of the PWM waveform. If a larger output voltage is required, then this is achieved by increasing the duty cycle, and vice versa. The output voltage will also be affected by the input voltage and the output current level, so the device needs to be configured correctly to ensure the desired output voltage.

The device also includes essential features such as overvoltage protection, undervoltage protection, overcurrent protection, and output over-temperature protection.

Conclusion

The LMS3655LQRNLRQ1 offers a number of advantages to suit applications such as Application Processors, Single Board Computers and Industrial Process Control. It provides a fast transient response and low output noise, while offering a step output range of between 8.0V and 1.25V and providing a maximum output current of up to 300mA. Furthermore, it offers essential protection features such as overvoltage protection, undervoltage protection, overcurrent protection, and output over-temperature protection.

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