IR3802AMTR1PBF

Voltage - Output (Min/Fixed):	0.6V
Base Part Number:	IR3802AMPBF
Supplier Device Package:	PQFN (5x6)
Package / Case:	15-PowerVQFN
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TJ)
Synchronous Rectifier:	Yes
Frequency - Switching:	300kHz
Current - Output:	6A
Voltage - Output (Max):	12V
Series:	SupIRBuck®
Voltage - Input (Max):	21V
Voltage - Input (Min):	2.5V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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Introduction

The IR3802AMTR1PBF is a surface-mount monolithic switching regulator ideal for applications requiring ultra-low power consumption and high efficiency. This integrated DC/DC buck regulator features a constant voltage output and can be used to provide a regulated output voltage from 0.7V to 3.6V. With a low quiescent current of 18.5uA, the IR3802AMTR1PBF offers low noise and high efficiency over a wide range of output currents and load conditions in an industry-standard SOT23-8 package.

Application Fields

The IR3802AMTR1PBF is an ideal solution for applications where space is limited and low power consumption is a must. Its wide input voltage range, constant voltage output, and small footprint make it well suited for battery-powered applications such as I/O and sensor power, phone/tablet/consumer electronics, and portable medical devices. Other applications include supercapacitor energy harvesting and power management in industrial and consumer products.

Working Principle

The IR3802AMTR1PBF is a DC/DC buck regulator that uses a fixed-frequency pulse-width modulation (PWM) control mechanism to step-down a source voltage to a regulated output voltage. The regulator operates in a switching mode, cycling the output between the input supply and ground at a switching frequency of 1MHz. As the output current increases, the duty cycle of the output is decreased, reducing the output voltage until it reaches the desired output voltage. The regulator features an internal compensation network which enables optimized line/load transient response.The regulator also features a soft-start feature which allows for a controlled ramp up of the output voltage. This prevents inrush current, reducing power supply line stress and avoiding stress on components downstream of the regulator.

Conclusion

The IR3802AMTR1PBF is a monolithic switching regulator ideal for low power applications requiring space-constrained footprints. Featuring wide input voltage range, a constant voltage output, low quiescent current, and low noise and high efficiency, the IR3802AMTR1PBF is an excellent choice for powering a wide variety of battery-powered and portable applications. Its integrated features and capabilities make it a suitable solution for any application where space is limited and a regulated DC/DC power supply is needed.

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