ISL6565BCBZ-T

ISL6565BCBZ-T Application Field and Working Principle

The ISL6565BCBZ-T is a low-cost, high-performance, voltage regulator integrated circuit (IC) designed for use in mobile applications. It provides a monolithic 5-amp power conversion circuit ideally suited for low-power applications such as tablet PCs, mobile handsets, portable consumer electronics, and other small battery-powered devices. The ISL6565BCBZ-T is intended to work with a variety of mixed-signal application processors, microcontrollers, analog-to-digital converters, digital-to-analog converters, and other purpose-specific logic in order to provide powering of the application’s functions.

The ISL6565BCBZ-T falls into the category of PMIC (Power Management Integrated Circuit). It is classified as a type of voltage regulator known as a DC-DC switching controller. In general, a voltage regulator is an IC which reduces the variation of an AC or DC voltage. DC-DC switching regulators are voltage regulating ICs which convert an input voltage to a specified output voltage at a high efficiency rate and with a minimal internal temperature rise. DC-DC switch controllers are typically used in applications such as battery charging, powering of FPGAs, ASICs and any other type of circuit which needs a constant output voltage. The main job of a DC-DC switch controller is to turn the power supply on and off in order to keep the output voltage stable.

ISL6565BCBZ-T Characteristics

The ISL6565BCBZ-T supports input voltages of up to 5.5V and output voltages ranging from 1.0V to 4.5V. It features adjustable output voltage and current, programmable soft-start, current limit, and output voltage accuracy. The ISL6565BCBZ-T also integrates a fixed-frequency current-mode PWM control architecture which minimizes external components and allows for higher efficiency and smaller solution size. The IC also features built-in protection against over-voltage, under-voltage, current overload and thermal shutdown.

Working Principle

The ISL6565BCBZ-T uses a synchronous buck topology to regulate the input voltage. The buck topology is a type of switching power converter based on the principle of inductor current being dependent on the input voltage when the inductor is switching. In simple terms, this means that an inductor (usually a high-grade core) is placed between the input and the output voltage. When a switch is turned on, current enters the inductor and the voltage at the output is reduced. When the switch is turned off, current is released from the inductor and the voltage at the output is increased.

The ISL6565BCBZ-T is designed to accept input voltages up to 5.5V and output voltages ranging from 1.0V to 4.5V. The IC is also capable of regulating peak-to-peak ripple to less than 50 mV, depending on the load. The ISL6565BCBZ-T also features a programmable soft-start feature, allowing the user to set the current limit, which is the maximum current that can be drawn from the output voltage.In addition, the ISL6565BCBZ-T is equipped with several protection features such as over-voltage, under-voltage, current overload and thermal shutdown. These protection features are designed to protect the IC from damage caused by over-voltage, under-voltage and excessive current conditions.The ISL6565BCBZ-T also includes built-in EMI filters, which reduce the amount of noise and increase the stability of the power supply.Overall, the ISL6565BCBZ-T is an ideal, low-cost, high-performance voltage regulator IC which is designed for use in mobile applications and is suited for low-power applications such as tablet PCs, mobile handsets, portable consumer electronics, and other small battery-powered devices.