ISL6439CBZ-T

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ISL6439CBZ-T is a Radio Frequency Power Amplifier (RFPA) power management integrated circuit (PMIC) designed for base station applications. It is a high efficiency, low noise, 3.3V integrated power supply solution that provides power to up to eight radio frequency (RF) and mixed-signal loads within the system. It combines a synchronous buck (SB-DCDC) controller and an independent linear regulator in a single, cost-effective package. The ISL6439CBZ-T can be used in a variety of RFPA system architectures and can support high temperature operating conditions, making it an excellent choice for base station applications.

The ISL6439CBZ-T is a voltage-controlled DC-DC switch-mode controller featuring an adjustable output voltage range, low-side n-MOSFET control and a logic-level switch. As a result, it can be used to achieve higher frequencies and improved voltage regulation. The ISL6439CBZ-T is designed to allow for flexibility and is highly configurable, making it suitable for a wide range of applications. This makes the ISL6439CBZ-T highly prevalent in base station architecture.

The ISL6439CBZ-T is capable of providing up to 8A of current and is highly efficient. It has an adjustable output voltage range and a unique current-mode control loop to ensure high performance and excellent load regulation. The low-side n-MOSFET control provides excellent protection against over-current and short-circuit conditions. The integrated logic-level switch combines with the low-side n-MOSFET control to provide further protection against over current and short circuit conditions. The ISL6439CBZ-T also features advanced power sequencing to ensure reliable operation.

The ISL6439CBZ-T operates at a fixed frequency and is designed for use with multiphase synchronous buck architectures. The device supports multiple current-mode control methods and uses a constant on-time (COT) control scheme for improved efficiency and low noise. Synchronous rectification significantly reduces switching losses and further improves the efficiency. The ISL6439CBZ-T also features short-circuit protection, over-temperature protection and UVLO (under-voltage lockout).

The ISL6439CBZ-T is an ideal PMIC voltage regulator DC-to-DC switch controller for a wide range of base station architectures. Its adjustable output voltage range, low-side n-MOSFET control and logic-level switch provide improved voltage regulation, high efficiency and reliability. Its advanced power sequencing, over-current and short circuit protection features greatly enhance system stability and performance. The ISL6439CBZ-T is an ideal power management integrated circuit for wireless base station applications.

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