SM72485SD/NOPB

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

SM72485SD/NOPB Voltage Regulator Introduction

The SM72485SD/NOPB is a synchronous buck voltage regulator belonging to the Power Management Integrated Circuits (PMICs) family specifically in the Voltage Regulators and DC-DC Switching Regulators categories. Its main purpose is to provide efficient, high power conversion capability for powering circuits from a battery, solar cell, or other power sources.

SM72485SD/NOPB Application Fields

The SM72485SD/NOPB is a low-cost, high-efficiency buck regulator with a wide range of allowable input voltages, up to 32V. It offers a variety of features, making it well-suited for a variety of application fields, including but not limited to:

• Backup power supply.
• Wireless communications equipment.
• Industrial and measuring instruments.
• Portable medical equipment.
• Automotive electronics.
• Automotive infotainment systems.
• Consumer electronics.

SM72485SD/NOPB Working Principle

The SM72485SD/NOPB is based on a synchronous buck regulator architecure. This type of regulator is often referred to as a step-down regulator, because it reduces the input voltage from an “upstream” source to the voltage level required by the “downstream” load. The SM72485SD/NOPB is a “synchronous” step-down regulator because it employs a pair of metal-oxide semiconductor field effect transistors (MOSFETs) to switch the input voltage on and off in order to “step-down” the voltage available to the downstream load.

The synchronous buck regulator includes two main components: the primary side (the upper MOSFET) and the secondary side (the lower MOSFET). During operation, the regulator employs a control loop to regulate the output voltage. This control loop adjusts the on and off times of the primary MOSFET, thus changing the average output voltage. The output voltage is determined by the ratio of the primary (PRI) and secondary (SEC) MOSFET’s on-times, these being a function of the operating frequency, load current, and the regulating primary node (VREF).

The SM72485SD/NOPB also includes other features to increase efficiency, such as an over-temperature protection, over-current protection, short-circuit protection, pre-charge mode, capacitor discharge for quick start-up, and programmable soft-start. These features reduce the amount of power dissipated by the MOSFETs, improving overall efficiency and helping to extend operating lifetime.

Conclusion

The SM72485SD/NOPB is a low-cost, high-efficiency synchronous buck regulator well-suited for a variety of application fields. Its low cost and efficiency, along with its wide range of additional features, make it an ideal choice for many applications where a power supply must be tailored to the specific needs of the downstream load.

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