LM27341MY/NOPB Integrated Circuits (ICs)

Introduction

The LM27341MY/NOPB is a general-purpose, single-output, step-up DC/DC switch-mode voltage regulator. It offers an ideal solution for a wide variety of common and high performance applications, such as providing output power for microprocessors, DSPs, ASICs, and embedded systems. The LM27341MY/NOPB has an internal power MOSFET switch with integrated synchronous rectification to minimize power losses and provide excellent efficiency over a wide range input voltage range.It operates from an input voltage from 4.5V to 25V and provides an adjustable output voltage of up to 20V. The LM27341MY/NOPB integrates several features such as current limiting, over-voltage protection, under-voltage lockout, over-temperature shutdown, enable, and optional shutdown.

DC-DC Switching Regulator

A DC-DC switching regulator is a device used to convert a DC voltage level from one voltage level to another. It typically uses switches to control the input current and output voltage, hence the name “switching regulator.”DC-DC switching regulators are very commonly used in electronic circuits and are a very efficient way to convert voltages. They offer a wide range of features, including short circuit protection, overload protection, current limit, over-temperature protection, and input voltage surge protection.

LM27341MY/NOPB Application Field and Working Principle

The LM27341MY/NOPB is an ideal solution for a wide range of applications that require a single output DC-DC switching regulator. The device offers good transient response, low noise and effective overall system performance. It is suitable for battery-powered mobile applications, as well as for applications requiring an intermediate voltage conversion between an input supply and a source.The LM27341MY/NOPB provides an adjustable output voltage from as low as 4.5V to as high as 20V. The output voltage can be adjusted via an on-chip voltage divider. The part features a power MOSFET switch with integrated synchronous rectification to minimize power losses and provide excellent efficiency over a wide input voltage range. It also integrally includes a current limit circuit and an optional enable signal.The LM27341MY/NOPB features a fixed switching frequency of 500kHz. At this frequency, the inductor size can be further reduced and the switching losses minimized. This results in a much smaller overall solution size, as well as higher power density and efficiency.

Conclusion

The LM27341MY/NOPB is a general-purpose, single-output, step-up DC-DC switch-mode voltage regulator. It is designed to provide high efficiency, low noise, and excellent overall system performance for a wide range of common and high performance applications. The device offers good transient response, low noise and effective overall system performance. It also features a fixed switching frequency of 500kHz, a MOSFET switch with integrated synchronous rectification for superior efficiency, and a built-in current limiting and optional enable signal. The LM27341MY/NOPB provides excellent efficiency over a wide range of input voltages and is suitable for a wide range of applications that require a single output DC-DC switching regulator.