ISL6443AIRZ

Series:	--
Packaging:	Tube
Part Status:	Active
Applications:	Power Supplies
Current - Supply:	2mA
Voltage - Supply:	5.6 V ~ 24 V
Operating Temperature:	-40°C ~ 85°C
Mounting Type:	Surface Mount
Package / Case:	28-VFQFN Exposed Pad
Supplier Device Package:	28-QFN (5x5)
Base Part Number:	ISL6443

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Introduction: The ISL6443AIRZ is an adjustable, highly efficient and low power supply solution from Intersil. ISL6443AIRZ integrates a wide range of features designed to provide improved performance for applications that require precision voltage regulation and power management. This article will address the application field and working principles of the ISL6443AIRZ.Power Supply ArchitectureThe ISL6443AIRZ is primarily used in applications that require precision voltage regulation and power management. It combines a power-conversion stage, a control loop and a power supply output stage in a small package to provide a complete solution for many application requirements.The ISL6443AIRZ power conversion stage consists of an N-channel MOSFET switch and an inductor, which generates an output voltage through pulse-width modulation. The pulse-width modulator (PWM) outputs a signal that is used to control the on-time and the off-time of the MOSFET switch. This synchronizes the output voltage with the reference voltage providing a stable output.The control loop of the ISL6443AIRZ includes a voltage reference, an error amplifier, and a voltage-regulation loop. The voltage reference sets the desired output voltage while the error amplifier maintains the output voltage. The voltage-regulation loop includes an analog multiplexer and a feedback divider, which adjusts the reference voltage to adjust the output voltage. The output stage of the ISL6443AIRZ is an N-channel MOSFET, which is used to control the output voltage. It is the main element of the power supply output, providing the current necessary to deliver the desired voltage.Application FieldsThe ISL6443AIRZ is suitable for a wide range of applications such as consumer electronics, medical devices, industrial control systems, LED lighting, PC/server power supplies and automotive systems.In consumer electronics, the ISL6443AIRZ can be used in LCD TVs, digital cameras and notebook computers to provide a true single-voltage power supply. It provides improved efficiency, which reduces the power dissipation of the device. It also simplifies the power distribution in the device, eliminating the need for multiple power supplies.In medical devices, the ISL6443AIRZ can be used to provide power supply to medical monitoring devices, allowing for an accurate and reliable operation. The device also provides flexibility in controlling the output voltage, allowing for an efficient power management operation.In industrial control systems, the ISL6443AIRZ can be used to provide stable output voltage, eliminating the need for multiple power supplies. It also reduces costs by simplifying the power distribution in the device, eliminating the need for multiple power supplies.In LED lighting, the ISL6443AIRZ can be used to provide constant output voltage at high current levels. It also provides flexibility in controlling the output voltage, allowing for an efficient power management operation.In PC/server power supplies, the ISL6443AIRZ can be used to provide a stable output voltage, eliminating the need for multiple power supplies. It also reduces costs by simplifying the power distribution in the device, eliminating the need for multiple power supplies.In automotive systems, the ISL6443AIRZ can be used to provide a stable output voltage, eliminating the need for multiple power supplies. It also reduces costs by simplifying the power distribution in the device, eliminating the need for multiple power supplies.Features and BenefitsThe ISL6443AIRZ incorporates a variety of features and benefits to provide a complete solution for applications requiring precision voltage regulation and power management. The ISL6443AIRZ provides low quiescent current (IQ) operation with a maximum current of less than 2 microamperes at no load and less than 10 microamperes at full load. This reduces power consumption and improves overall system efficiency.The device also features a programmable voltage range from 0.8V to 5.5V, enabling more precise power management in higher end applications. It also features a programmable switching frequency from 200 KHz to 1 MHz, allowing for flexibility in controlling the overall output voltage.The ISL6443AIRZ also offers thermal protection, brown-out protection, current and voltage limit protection, output voltage trim capability and overvoltage shutdown. These features help protect the device from potential damage caused by short-circuit, over-voltage, over-current and other environmental conditions.ConclusionThe ISL6443AIRZ is a highly efficient, low power supply solution from Intersil. It integrates a wide range of features designed to provide improved performance and power management for applications that require precision voltage regulation. The device\'s programmable voltage range, low quiescent current and thermal protection make it suitable for a wide range of applications, including consumer electronics, medical devices, industrial control systems, LED lighting, PC/server power supplies and automotive systems.

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