ISL80030AFRZ-T7A

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The ISL80030AFRZ-T7A is a DC-DC switching regulator and is a member of Intersil’s family of low-power, high-efficiency, form-factor compatible voltage regulators. It is designed to regulate varying input voltage sources from a wide range of voltages including DC-DC converters and battery supplies. This integrated device provides a maximum output current of 6 A and an adjustable output voltage range of 0.6 V to 5.5 V. The switching frequency and external control pin can be adjusted through an external resistor to optimize total efficiency. Intersil also provides ISL80031AFRZ-T7A with temperature monitoring and over-temperature short circuit protection.

The ISL80030AFRZ-T7A is a fixed-frequency, current-mode, switching regulator, which ensures fast dynamics and stable operation. Its simple architecture, with few external components, makes it ideal for applications with limited space availability. The control pin is a key feature, allowing the user to customize the on-time (t_on) of the signal and to adjust the maximum peak current limit of the output signal (I_peak). This helps to maintain current limit accuracy under dynamic load. Additionally, the external resistor can be used as a fault signal generator for profiling the current and voltage waveform.

The ISL80030AFRZ-T7A is suitable for a variety of applications, including notebooks, consumer grade electronics and telecom supplies. The device can be used as a point of load (POL) regulator and is compatible with both DC and AC input sources. It is also compatible with low-inductance external components, making it suitable for applications where space and thermal considerations are important. Moreover, its protection features enable it to be used in high-voltage industrial and automotive applications.

The working principle of the ISL80030AFRZ-T7A is based on an internal oscillator, an error amplifier and a power switch to produce the output voltage. The error amplifier senses any difference between the input and output and provides feedback to the oscillator. The oscillator produces the switching signal for the power switch according to the error signal. When the power switch is turned on, the current limit is set by the internal current sensing element. When the current reaches the set value, the power switch is turned off and the cycle repeats to maintain the output voltage.

In summary, the ISL80030AFRZ-T7A DC-DC switching regulator is a suitable solution for applications requiring both power efficiency and accurate current sensing. Its fixed-frequency, current-mode architecture ensures fast dynamics and stable operation, as well as compatibility with low-inductance external components. Its adjustable output voltage range, temperature monitoring and over-temperature short circuit protection make it suitable for a variety of applications in both industrial and automotive electronics.

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