LM2575-12WU-TR

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

LM2575-12WU-TR is a part of National Semiconductor’s family of fixed-frequency, voltage regulator integrated circuit components. Its application fields and working principles help make it an ideal device for switching regulator designs.

Application Field

The LM2575-12WU-TR is designed to have a wide input voltage range of 4.5 V to 40 V while providing an output voltage of 5V with a maximum continuous operating power of 12W. This allows the device to be widely used in a variety of industrial, medical, and consumer applications.

The LM2575-12WU-TR can be used in portable equipment powered by a single lithium battery or a battery array, providing a constant 5V output voltage. The device also offers protection against input voltage transients, helping to ensure the 5V output is maintained within tight regulation limits even under extreme input voltages. Additionally, this device boasts high efficiency with a low on-resistance MOSFET that eliminates the need for a switch-node Schottky diode, achieving higher efficiency and increased power output. Furthermore, the LM2575-12WU-TR is packaged in the industry-standard TSOT-23-6 package, making it easy to integrate into any existing board design.

Working Principle

The LM2575-12WU-TR is a fixed frequency PWM (pulse-width modulation) switching voltage regulator. The device accepts an input voltage from 4.5 V to 40 V and provides an output voltage of 5V. The device uses two stages of operation to control the output voltage. In the first stage, a voltage divider is used to compare the feedback voltage of the output to a reference voltage. In the second stage, a Pulse Width Modulator (PWM) compares the previously generated signal to a triangle wave. This creates an output pulse width signal to drive the MOSFET switch, regulating the output of the device to 5V.

One of the advantages of the LM2575-12WU-TR is its fixed frequency switching, which helps to reduce the need for external components. The device also offers protection against input overvoltage, short-circuit and thermal overload conditions. Additionally, it features an enable/disable function for reducing power consumption in standby modes.

In conclusion, the LM2575-12WU-TR is an ideal choice for DC to DC switching regulator designs, offering a wide input voltage range and protection features that ensure the 5V output voltage is regulated within tight tolerances. With its industry-standard packaging and high efficiency, this device is one of the most reliable and versatile solutions in the market.

The specific data is subject to PDF, and the above content is for reference