ISL91132IIQZ-T

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ISL91132IIQZ-T application field and working principle

This article is devoted to one of the widely used DC-DC switching regulators devices – ISL91132IIQZ-T, which ensures reliable and accurate voltage regulation. It belongs to the class of PMIC type – Voltage Regulators – DC DC Switching Regulators.

Overview

ISL91132IIQZ-T, a step-down switching regulator, is a monolithic switching device from Intersil providing adjustable output voltage from 0.9V to 5V. This device features an adjustable operating frequency, high-efficiency operation, low ripple current, low output voltage noise and an internal bias supply, allowing for a reduced external component count and improved circuit simplicity. The device is designed to be used in high performance systems and is manufactured using Intersil\'s Advanced Power Management Technology.

Features

ISL91132IIQZ-T provides several features for efficient and reliable operation which include:

• Up to 5A Output Current
• Maximum Duty Cycle of 80%
• Accurate Reference Voltage
• Adjustable Operating Frequency
• Internal Bias Supply
• Overcurrent Protection
• Undervoltage Lockout
• Thermal Shutdown

Electrical Characteristics

ISL91132IIQZ-T has several typical electrical characteristics which include:

• Input voltage range of 2.5V to 5.5V
• Output voltage range of 0.9V to 5V
• Operating frequency of 20kHz to 1.6MHz
• On/Off Ratio of 0.5
• Thermal Shutdown Temperature of 150°C
• Overcurrent Threshold of 25A

Application Field

ISL91132IIQZ-T is designed for applications requiring high performance and low power consumption. The device is suitable for use in portable and battery powered equipment such as PDAs, cell phones, and digital cameras. It is also suitable for use in high performance systems such as servers, routers, and optical networking equipment.

Working Principle

ISL91132IIQZ-T works by converting the input voltage to a regulated low voltage output. The input voltage is fed into the input of the device, where it is filtered and regulated by the internal voltage regulator. The voltage regulator then produces an output voltage that is regulated and suitable for the circuit being powered. The output voltage is switched on and off at a set frequency (controlled by an internal oscillator) which allows the amount of current delivered to the load to be varied. The output voltage is regulated by comparing the output voltage with the regulator reference voltage, and adjusting the duty cycle of the switch to maintain the set output voltage.

The device also includes several protection features such as Thermal Shutdown, Overcurrent Protection, and Undervoltage Lockout which ensure the device operates within its specified parameters.

Conclusion

ISL91132IIQZ-T is a highly efficient and reliable DC to DC switching regulator fabricated using Intersil’s advanced power management technology. The device is designed for applications requiring high performance and low power consumption, and is suitable for use in portable and battery powered equipment, as well as in high performance systems.

The device features an adjustable output voltage, adjustable operating frequency, and several protection features, allowing for improved system performance and enhanced circuit protection.

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