ISL8002AFRZ-T

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The ISL8002AFRZ-T integrates a regulator and a buck converter into one chip. It is designed for consumer and industrial products as a DC-DC regulator and as a power management IC. This device can be used to provide a stable 5V voltage output from an input voltage of 3.3V or 5.5V with a maximum current output of up to 2A. This device is ideal for use in applications such as point-of-load (POL) voltage regulation, and low noise DC-DC applications. This device is part of the PMIC - Voltage Regulators - DC DC Switching Regulators category.

The ISL8002AFRZ-T device is an integrated regulator and buck converter with integrated MOSFETs and loop control circuitry. It includes a synchronous buck converter with internal high-side and low-side MOSFETs, a 150mV current sensing voltage, a soft start, a feedback ADC and PWM control. An external resistive divider is used to set the output voltage, and an external capacitor is used for loop compensation. This device also includes a programmable output voltage, under voltage protection, over temperature protection, and a thermal shutdown.

The working principle of the ISL8002AFRZ-T is based on duty-cycle control method. The duty-cycle is determined by the duty-cycle control circuitry which uses the feedback voltage provided by the output voltage divider to adjust the on-time of the internal MOSFET switches, and thus the output voltage. The internal oscillator is used to generate a clock signal for the PWM and to determine the switching frequency of the regulator. The switching frequency can be adjusted by the external frequency setting resistors.

The ISL8002AFRZ-T has a wide range of application possibilities. Some of these include voltage polishing units, POE Ethernet ports, mobile devices, audio equipment and digital power systems. This device is also suitable for digitally controlled applications as it can be programmed via I2C interface. The device also has a wide range of functional safety features such as over current protection, over voltage protection, under voltage lockout and thermal shutdown.

In conclusion, the ISL8002AFRZ-T is a highly integrated, cost effective PMIC designed for consumer and industrial products. It is suitable for applications such as voltage polishing units, POE Ethernet ports, mobile devices, audio equipment and digital power systems, and is programmable via I2C. The device provides an integrated solution for buck converter and regulator and includes various safety features.

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