LM2852XMXAX-1.8

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LM2852XMXAX-1.8 is a DC/DC switching regulator product. This type of product is widely used in power management integrated circuits (PMICs). It can be widely applied in various scenarios.

Introduction

There are various types of DC/DC switching regulators in today’s electrical industry. Each has its own specific power and performance characteristics. The LM2852XMXAX-1.8 is a product developed by Linear Technology, which is classified as a PMIC - Voltage Regulators - DC DC Switching Regulators. It is a low-side P-channel, low-input voltage synchronous buck converter with wide input voltage range and high efficiency. With no external FETs, and optimized adaptive on-time control, the LM2852XMXAX-1.8 helps simplify designs. It has programmable current limit and fast transient response, which make this device more suitable to meet today’s high-efficiency applications. The LM2852XMXAX-1.8 is available in a small form factor, with an ultra-small package (DGK) of only 2.45 mm x 1.45 mm.

Applications and Working Principle

Applications

The LM2852XMXAX-1.8 can be used in a variety of scenarios in the electrical industry. It has a high efficiency for battery-operated systems and devices, and is suited for mobile applications such as personal navigation systems, cell phones, and digital cameras. It can also be used in post regulators for high power systems, as well as low-noise linear regulators for regulated DC/DC converters. Additionally, the LM2852XMXAX-1.8 can be used in parallel configurations to increase output current.

Working Principle

The LM2852XMXAX-1.8 is a DC/DC converter of the low-side P-channel type. It uses a synchronous buck converter circuit to convert input voltages to a constant output voltage, which is usually less than the input voltage. The main idea of this conversion method is to use a low-side P-channel FET to switch on/off the input voltage to the converter load, which thus regulates the output voltage from the converter. The circuit also includes an operating amplifier (OPAMP) and two error sources that are used to detect the output voltage and control the low-side P-channel FET. This type of circuit offers several advantages over traditional linear regulators, such as high efficiency and fast transient response.

Conclusion

The LM2852XMXAX-1.8 is a smart DC/DC switching regulator that is widely used in various PMIC applications. It has high efficiency and fast transient response, as well as other features such as programmable current limit and wide input voltage range. With its small form factor and its optimized adaptive on-time control, this product can be used in a variety of scenarios, making it an ideal power management solution.

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