LM2852YMXAX-0.8

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The LM2852YMXAX-0.8 device is a monolithic switched-mode voltage regulator designed to address the need for low-current and portable applications. It is a low-noise, low-voltage, high-accuracy, synchronous buck regulator, capable of regulating an output voltage as low as 0.8V, with a maximum output current capability of up to 500mA.

The device operates with an input voltage range of 4V to 40V and is offered in a 4mm × 4mm, lead-free, low-profile QFN package. The device is designed to deliver an adjustable output voltage, which is regulated by either an external resistor divider or by direct PMBus protocol.

The LM2852YMXAX-0.8 has various features, such as an internal switching frequency of up to 2MHz, under-voltage protection, 1.5% minimum accuracy, very low inrush current at start-up, and fixed 0.5V output accuracy. It also features a high efficiency of up to 90%, low dropout performance, a power-down mode, short-circuit protection, and pre-bond IC temperature monitoring capability.

The working principle of the device is simple and straightforward. It uses two switches, an inductor, and two capacitors as the basic building blocks. The switches are controlled by an internal voltage waveform. When the gate of the first switch is switched on, current flows through the inductor and charges the output capacitor. When the gate of the first switch is turned off, the current is stored in the inductor and flows through the second switch. This current passes through the output capacitor and creates the desired output voltage. The switch control circuit maintains a constant frequency by adjusting the duty cycle.

The LM2852YMXAX-0.8 can be used in various applications, including industrial, consumer, telecommunications, and medical. It is also suitable for use in automotive and aeronautical systems. It can be used for providing battery-operated equipment, such as portable radios and calculators, with precise and regulated power supply. It can also be used in LED driver applications, as well as in portable devices, like mobile phones and PDAs, where space and power savings are essential.

In conclusion, the LM2852YMXAX-0.8 is a low current, low-power, and precise switched-mode voltage regulator in a small package. It offers advantages such as high efficiency, adjustable output voltage, and excellent dynamic response. It is suitable for use in a wide range of applications, such as consumer electronics, industrial applications, and automotive and aeronautical systems.

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