LM3490IM5X-15

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

LM3490IM5X-15 Application Field and Working Principle

The LM3490IM5X-15 is an integrated dual-channel, high-current, linear voltage regulator. It is an excellent choice for power distributed LCD backlight applications as well as other applications requiring a regulated output voltage up to 15V. It is designed to provide maximum power from a single power supply. It also offers level shifting, current limit protection, over temperature shut down protection and a wide operating temperature range.

The LM3490IM5X-15 voltage regulator is designed for low voltage applications such as LED backlighting, cell phones and portable electronic devices. This regulator has two voltage regulator channels. Each channel has a wide input voltage range of 5V to 20V. Furthermore, it has a precise output voltage range of 5V to 15V and a current limit of 350mA. It also has an adjustable output voltage to provide different levels of brightness. The LM3490IM5X-15 is highly stable, very robust and extremely efficient. In addition, it provides excellent line and load regulation as well as temperature stability. It also has a low shutdown current of less than 1uA which helps to reduce power consumption when the device is not in use.

The LM3490IM5X-15 linear voltage regulator is based on a unique topology which provides a low dropout voltage with high-efficiency. This topology is made up of two separate voltage regulator channels. The first channel has a high-current buffer which allows for a wide input voltage range, low power dissipation, and fast response time. The second channel consists of a low-current regulator which helps to provide precise output regulation. The combined functionality of these two channels provides linear regulation over a wide range of current limits, input and output voltages.

The LM3490IM5X-15 linear voltage regulator works by using an internal voltage reference to provide a constant output voltage. When the input voltage to the regulator is higher than the output voltage, current will flow from the input to the output. The current that flows from the input to the output is proportional to the voltage difference between the input and output voltages. Therefore, when the input voltage increases, more current will flow, and the output voltage will remain constant. Similarly, if the input voltage decreases then the current will reduce and the output voltage will remain constant. This feature is useful in applications such as LCD backlighting where the voltage remains constant despite changes in the ambient light level.

The LM3490IM5X-15 also has a current limiting feature which helps to protect the device from overloading. This feature is implemented by sensing the voltage across a sense resistor connected between the output and ground. If the current drawn from the regulator exceeds the specified limit, the voltage across the sense resistor will increase, which triggers the current limit circuit and the regulator shuts down to prevent damage. In addition the LM3490IM5X-15 is protected from over temperature conditions. If the junction temperature of the device exceeds the specified temperature limit, the device will automatically shut down and will remain shut down until it cools off.

The LM3490IM5X-15 is a highly efficient and robust linear voltage regulator which is designed for use in low voltage applications such as voltage or current regulated LED backlighting systems. It has a wide input and output voltage range and can handle up to 350mA of current. It features precise output voltage regulation, protection against over temperature and current overloading, and low power consumption when not in use. This regulator is an ideal choice for distributed LCD backlighting systems and other applications where a regulated output voltage up to 15V is needed.

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