CS5173EDR8

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CS5173EDR8 is a DC/DC Switching Regulator IC, a part of Positive High Voltage Regulator, and a dedicated Power Management IC (PMIC). This device is designed by using advanced CMOS technology to draw a minimum of current while providing a high, efficient power supply.

This high voltage, integrated circuit is used in various types of applications such as automotive, industrial, and consumer. It is also suitable for applications such as battery powered systems, sensors, and monitoring. Other applications are cellular phones, PDAs, music players, DVD players, and other portable electronic devices.

Working Principle

The CS5173EDR8 works with a combination of a Buck, Boost, and Buck-Boost regulators. It processes the input voltage through differential amplifiers and switches to achieve the output voltage. During each cycle, the device will switch the current between the output, the input, or the ground. It also has the option of adopting a “conversion” and “discharge” mode in order to improve efficiency, which will reduce the power loss.

A built-in voltage-sensor circuit monitors the output voltage in order to maintain the specified output voltage by controlling the current supplied from the input. This is achieved by controlling the duty cycle of the switching transistors. The duty cycle is the proportion of time when the current will flow to the output. In higher duty cycles, the output voltage is higher with lower current flowing from the input.

The device features a thermal protection circuit which shuts off the device to prevent overheating. It also provides a three-way protection for output over voltage, input under voltage, and over-temperature. Furthermore, the device is also equipped with an internal oscillator to reduce the time of external components.

Features

The CS5173EDR8 has a wide input voltage range that works well with the most common input sources. It also provides a very efficient switching regulator with low quiescent current and low output voltage ripple. It is also a highly stable DC/DC regulator with internal soft-start, adjustable output voltage, and current limiting. It is ideal for a wide range of design applications.

The CS5173EDR8 has a wide operating temperature range from 0ºC to 70ºC. The device also provides a low-noise switching frequency with a maximum frequency of 1.4MHz. It also features a low-power shutdown for very low power consumption when operating in standby mode.

The CS5173EDR8 provides a broad range of protection features for the output. It operates with over-voltage protection with external lowering of the output current in the event of an over-voltage condition. It also provides high efficiency, low noise, and long-term stability over a wide temperature range.

Applications

The CS5173EDR8 DC/DC Switching Regulator IC is applicable to a variety of applications such as automotive, communication, consumer electronics, and industrial applications. It is suitable for use in a wide range of products, including sensor nodes, active/passive systems, audio/video devices, modems, cellular phones and other hand-held appliances. Additionally, it can be used in E-meter, monitors, and baseband communications.

The device features an internal switching and power supply design which produces adjustable outputs for large fixed-load , high-allowed and no load conditions. It can also be used in many power requirements in electronic components, modules, and AA/AAA batteries. It is also suitable for point-of-load designs and high current mobile power supply systems.

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