ISL95901IRZ

Voltage/Current - Output 3:	3.32V, 150mA
Supplier Device Package:	46-QFN (5x6)
Package / Case:	46-VFQFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C
Voltage - Supply:	4.5 V ~ 16 V
w/Sequencer:	No
w/Supervisor:	No
w/LED Driver:	No
Series:	--
Voltage/Current - Output 2:	0.8 V ~ 16 V, 4A
Voltage/Current - Output 1:	0.8 V ~ 16 V, 4A
Frequency - Switching:	300kHz ~ 1MHz
Number of Outputs:	4
Function:	Any Function
Topology:	Step-Down (Buck) Synchronous (2), Linear (LDO) (2)
Part Status:	Obsolete
Packaging:	Tube

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Introduction

The ISL95901IRZ is a high efficiency, low power, voltage regulator designed in monolithic power components. It offers a wide range of features, including adjustable voltage options and low output noise. This product is used in various applications such as battery-powered equipment, automotive products, communications systems, and embedded systems. It is well suited for both linear and switching based power management designs.

Application Field of ISL95901IRZ

The ISL95901IRZ is a voltage regulator integrated from a monolithic structure. It is capable of withstanding a maximum voltage of 39 V and a maximum current of 3A with a high-efficiency power solution. This product is suitable for a variety of applications, including:

• Battery-powered Equipment: The ISL95901IRZ is designed to support a wide range of battery chemistries and provide optimal performance while maintaining low input power. It ensures longer battery life through efficient power conversion and low quiescent current.
• Automotive Products: This product can support a wide temperature range from -40°C to +125°C and has a low input current of 20µA. It has a high efficiency of up to 95% for power conversion and allows for reliable operation in extreme conditions.
• Communication Systems: The ISL95901IRZ is suitable for mobile and data communication systems. It provides adjustable output voltage up to 5.0V, low output noise and a high-efficiency power solution.
• Embedded Systems: This product is suitable for use in embedded systems as it provides low-voltage tolerance, adjustable output voltage and allows for low-cost solutions.

Working Principle of ISL95901IRZ

The ISL95901IRZ is a monolithic device that uses both linear and switching modes in its operation. The internal circuitry integrates an adjustable reference and a pulse-width modulation (PWM) controller to provide an output voltage range of 0.5 V to 5.0 V. The device works by using the reference voltage to compare with a feedback voltage generated from the output. If the level of the feedback voltage is lower than the reference voltage, the pulse-width modulator will increase the amount of energy going to the output, and vice versa. In the linear mode, the device is capable of providing low output noise and less distortion of the input waveform. The linear regulator mode also provides better efficiency than the switching regulator. In the switching mode, instead of providing power in a linear manner, the device automatically switches between the output and ground. This provides the best efficiency and performance for the most demanding power supplies.

Conclusion

The ISL95901IRZ is an integrated monolithic power electronics device designed to provide efficient and reliable power conversion in a range of applications. It is suitable for use in both linear and switching based power management solutions. The product provides an adjustable output voltage range of 0.5 V to 5.0 V, low output noise and a wide temperature range of -40°C to +125°C. Additionally, the product features low quiescent current, high efficiency, and a maximum current of 3A.

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