ISL62391IRTZ

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The ISL62391IRTZ is a PMIC, or Power Supply Controller, Monitor component designed to optimize power performance in systems relying on wall adapter, USB, or other sources of power. The component manages a variety of key operating parameters, such as voltage and current, to ensure that the power is stable and reliable. This component operates similarly to a switching power supply and works to maintain a constant output voltage and current within specified ranges. It is a highly robust component that is capable of working at voltages up to 14V and current up to 5A. Additionally, this component is optimized to minimize power loss and provide power saving features such as a sleep mode and input current reduction.

The ISL62391IRTZ is designed with an input voltage range of 6V – 14V and an output voltage range of 1.8V – 7V. The component is also capable of up to 5A of current output. The device features a 3-pin voltage setting input (VSET1-3) that allows for external programming of the output voltage. It also includes short circuit and thermal shutdown protections as well as Auto Re-Start Mode and Soft-Start. All of these features work together to ensure that the component can operate reliably in a wide range of operating conditions and to promote efficiency.

In addition to its high level of power management features, the ISL62391IRTZ offers flexibility in terms of controlling the output voltage and current. The component has an adjustable switching frequency (3.3MHz to 90KHz) that can be used to adjust the output ripple frequency. This allows the system designers to tailor the output ripple frequency to meet EMC requirements or deliver optimal system performance. The component also includes a 2mA to 5A integrated current limit that can be used to further regulate the output current.

The ISL62391IRTZ operates using a synchronous buck topology with a current mode pulse-width modulator (PWM) control scheme. Using this scheme, the component switches between two transistors (a High-side and a Low-side) to step down the input voltage to the desired output voltage. The duty cycle of the PWM control determines the output voltage, with a high duty cycle resulting in a higher output voltage and a low duty cycle resulting in a lower output voltage. During operation, the component measures the voltage across a sense resistor to calculate the output current and any external load changes can be detected and compensated for by adjusting the duty cycle.

In conclusion, the ISL62391IRTZ is a PMIC power supply controller, monitor component that is optimized to efficiently manage the power of wall-adapter, USB, or other sources of power. It is designed with key operating parameters such as voltage and current that can be programmed externally. Additionally, the component also offers useful features such as current limiting, Auto Re-Start mode, Soft-Start, and adjustable switching frequency. All of these features make the ISL62391IRTZ a great choice for a wide range of applications that require reliable and efficient power management.

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