Voltage - Output (Min/Fixed):	0.6V
Base Part Number:	ISL8502
Supplier Device Package:	24-QFN (4x4)
Package / Case:	24-VFQFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Synchronous Rectifier:	Yes
Frequency - Switching:	500kHz ~ 1.2MHz
Current - Output:	2A
Voltage - Output (Max):	14V
Series:	--
Voltage - Input (Max):	14V
Voltage - Input (Min):	5.5V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Active
Packaging:	Tape & Reel (TR)

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ISL8502AIRZ-T Application Field and Working Principle

Introduction

The ISL8502AIRZ-T is a step down DC-DC switching regulator from Intersil. This device is equipped with the ISL280xx family of buck controller ICs and is designed to provide excellent regulation at output voltages as low as 0.6V. This voltage regulator is designed to operate in a wide range of applications such as automotive and industrial applications, providing excellence in thermal performance, reliability, and accuracy. This application is classified as a PMIC - Voltage Regulators - DC DC Switching Regulators.

Working Principle

A DC-DC switching regulator, such as the ISL8502AIRZ-T, is designed to efficiently convert a high input voltage to a lower output voltage. It can be used in high-power applications with input voltages ranging from 8V to 80V. This voltage regulator uses synchronous rectification to improve efficiency, as well as dynamic current limit (DCL) and over-temperature protection (OTP) to protect the system from damages. The ISL8502AIRZ-T integrates a constant frequency current mode PWM DC-DC controller, MOSFETs, operating temperature range from -40°C to 125°C, and require no external components.The ISL8502AIRZ-T utilizes a high-efficiency topology to convert the input voltage to a lower output voltage. The manufacturer claims up to 95% efficiency in the voltage conversion process, resulting in low power losses and thermal emissions. The range of output voltage that the ISL8502AIRZ-T can provide is 0.6V to 5.5V. The device is designed to be used in automotive and industrial applications, such as power back-end and point-of-load (POL) solutions. The input voltage is first converted to a relatively high-frequency signal, which is then used to drive the MOSFETs to control the output voltage of the DC-DC regulator. This step down switching regulator uses a synchronous topology to effectively generate a lower output voltage from the higher input signal. The output voltage is regulated by two inputs, the free running frequency and the voltage feedback signal. The free running frequency (Ffr) signal is used to set the output frequency of the DC-DC regulator, while the voltage feedback signal (Vfb) sets the output voltage of the DC-DC regulator.

Features and Benefits

The ISL8502AIRZ-T offers several features that make it an attractive option for a variety of applications. These include:

• Excellent thermal performance and reliability.
• High efficiency, up to 95%.
• Low output noise and ripple.
• Operating temperature range of -40°C to 125°C.
• Small size, 11mmx11mm QFN package.
• Integrated dynamic current limit.
• Over-temperature and over-current protection.
• Cross Regulation and Isolated Regulation.
• 1V to 5.5V output range.
• Low start-up current.

These features make the ISL8502AIRZ-T an ideal choice for a variety of applications such as automotive and industrial applications, providing excellent thermal performance, reliability and accuracy.

Applications

The ISL8502AIRZ-T is an ideal solution for a variety of applications, such as automotive and industrial applications. The device is designed for use in high-power applications, including power back-end and point-of-load (POL) solutions. Some of the applications include:

• Automotive applications: Dashboard, infotainment systems, headlights and signals, ECU, etc.
• Industrial applications: Data acquisition systems, industrial LED lighting, thermostats, sensors, HVAC systems, etc.

The ISL8502AIRZ-T is also suitable for other applications requiring low output voltages, such as battery management systems, phones, tablets, etc.

Conclusion

The ISL8502AIRZ-T is a step down DC-DC switching regulator from Intersil. This device integrates MOSFETs, high-efficiency topology, wide input voltage range, high thermal performance and reliability, and high efficiency of up to 95%. It is designed for use in a wide range of automotive and industrial applications. With its features, this voltage regulator is a great choice for a wide range of applications.

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