ISL95822IRZ

Series:	Robust Ripple Regulator™ (R3)
Packaging:	Tube
Part Status:	Active
Applications:	Controller, Intel VR12.5, VR12.6
Voltage - Input:	4.5 V ~ 28 V
Number of Outputs:	1
Voltage - Output:	0.5 V ~ 2.3 V
Operating Temperature:	-40°C ~ 100°C
Mounting Type:	Surface Mount
Package / Case:	32-VFQFN Exposed Pad
Supplier Device Package:	32-QFN (4x4)

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Introduction

ISL95822IRZ is an advanced high performance integrated power supply designed to power FPGAs, microprocessors and other micro-components operating between 1.8 V and 3.3 V. This integrated power supply consists of a multi-mode buck converter, two linear regulators and two LDO linear regulators. It is integrated in the 8-ball package, thus reducing the system form factor. This integrated power supply operates from a 2.5 V to 4 V input source and supports up to 5 A output current.

Application Field

ISL95822IRZ is used in applications requiring a wide range of input and output voltages. It is particularly suitable for processor-based applications. The dual-mode buck converter offers both a reset source and a general-purpose power distribution node. The integrated linear regulators provide a stable and precise output voltage with low noise. The two LDO linear regulators ensure higher accuracy and support high current loads up to 5 A.ISL95822IRZ can be used in a wide range of applications, such as:

• Desktop and laptop computers
• Mobile devices, such as smartphone and tablets
• Server and storage systems
• Industrial control/automation systems
• Networking equipment and point-of-sale terminals
• Embedded control and instrumentation systems

Working Principle

ISL95822IRZ operates using a multiphase buck DC-DC converter for the main voltage rail. This converter uses a single-rail input voltage of 2.5 V to 4 V and generates accuracy outputs ranging from 1.8 V to 3.3 V. The multi-mode converter can operate in PWM or PFM mode to maintain a low output voltage ripple.The two linear regulators are used for output voltage regulation. They use an external reference voltage and can provide output voltage accuracy (±1 mV) and low noise. The two LDO linear regulators provide a low dropout voltage, fast response time and a high output current of up to 5 A.The ISL95822IRZ is also equipped with an external reset input pin to accommodate monitoring of a voltage supply rail. The reset input pin can detect a voltage rail that is lower than the system under voltage lockout (UVLO) level. If the voltage on the reset input pin is low, the ISL95822IRZ will not operate, thus ensuring system-level protection.

Conclusion

ISL95822IRZ is a highly integrated power supply designed to power FPGAs, microprocessors and other micro-components. It provides a multi-mode buck converter, two linear regulators and two LDO linear regulators on a single 8-ball package. It operates from a 2.5 V to 4 V input source and supports up to 5 A output current. This power supply can be used in a wide range of applications, such as: desktop and laptop computers, mobile devices, server and storage systems, industrial control/automation systems, networking equipment, point-of-sale terminals and embedded control and instrumentation systems. Additionally, it is equipped with an external reset input pin to accommodate monitoring of a voltage supply rail.

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