LT3091IR#TRPBF

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

The LT3091IR#TRPBF is a precision current-mode step-down voltage regulator integrated circuit (IC). It combines high-precision current programming, high-efficiency, low ground current and up to 4A of output current in a tiny 2mm × 2mm package. The regulator is based on a synchronous buck controller with automatic pulse-skipping and current limit protection. It is used to obtain a regulated output voltage from a higher input voltage and can provide up to 4A of continuous output current.

The LT3091IR#TRPBF is ideal for a variety of applications, including portable electronics, telecommunication equipment, power supplies, industrial systems, and automotive applications. It can be used to step down 12V, 24V or higher input voltage to an output voltage as low as 0.8V. The maximum available output voltage is limited only by a minimum on-time set by an external resistor. The LT3091IR#TRPBF operates at a switching frequency of up to 2.2MHz and can be synchronized to an external clock up to 4MHz.

Working Principle of LT3091IR#TRPBF

The regulator works by monitoring the output voltage of the IC to ensure it stays within the preset limits. The regulator uses a pulse width modulation (PWM) technique to control the output voltage. It uses a synchronous buck switching design which switches a sense FET whose source is connected to the input voltage and its drain is connected to the output node. The output voltage is kept constant by controlling the duty cycle of the sense FET.

The voltage regulation is achieved by using a precision current source operating in current-mode control. The current source is connected between the output and the input and senses the drop in voltage across the sense FET. It then adjusts the PWM duty cycle accordingly to keep the output voltage at the preset level. The current source also has a continuous current limit which limits the maximum peak current through the current source.

In addition to voltage regulation, the LT3091IR#TRPBF also provides current limit protection. The current limit is set by two resistors connected to an internal current sense amplifier. When the current limit is reached, the regulator shuts off the output to protect the device from current overloads.

Benefits & Features

The LT3091IR#TRPBF offers a variety of features and benefits that make it a great choice for many applications. It offers low ground current and wide input voltage range, low output voltage, high efficiency, and fast transient response. The device features a fast current settability and is also fully protected against over-voltage, over-current, and over-temperature.

The device is designed to be used in applications where space constraints are a major consideration. It is available in a tiny 2mm × 2mm package and can be used in a variety of applications, including cell phone chargers, power management devices, and portable electronics.

Conclusion

The LT3091IR#TRPBF is a highly efficient, low ground current precision current-mode step-down voltage regulator integrated circuit. It is ideal for applications that require an output voltage as low as 0.8V, as well as those that require high efficiency, fast transient response, and a wide input voltage range. The device is available in a tiny 2mm × 2mm package and provides protection against over-voltage, over-current, and over-temperature.

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