XR76203EL-Q

Voltage - Input (Max):	4V
Supplier Device Package:	30-QFN (5x5)
Package / Case:	30-PowerVFQFN
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TJ)
Synchronous Rectifier:	Yes
Frequency - Switching:	100kHz ~ 800kHz
Current - Output:	3A
Voltage - Output (Max):	40V
Voltage - Output (Min/Fixed):	0.6V
Series:	Power Blox™
Voltage - Input (Min):	5V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Active
Packaging:	Tray

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Introduction

The XR76203EL-Q is a very small, low power, and cost effective DC-DC switching regulator, which helps provide high-efficiency, low-noise and high-speed regulation of loads in switching applications. Developed by Exar, this DC-DC buck regulator provides robust design, low noise, and high efficiency, while operating at up to 20 volts wide operating temperature.

Applications

The XR76203EL-Q is designed for multiple types of applications, such as automotive aftermarket or built-in electronic systems, to desktop PCs, notebooks, and networking devices, including PC cards, hubs and switches. It is also applicable in medical and industrial applications, such as robots, mobile medical devices and embedded systems.Besides, its high efficiency and small size make it suitable for applications that demand for a small form factor, such as digital TVs and media players, Gaming consoles and PC/tablet systems. Additionally, the XR76203EL-Q is an industry standard product, which can be modified to suit the needs of various architectures.

Working Principle

The XR76203EL-Q DC-DC buck switching regulator employs Exar\'s unique low-noise PWM topology, which provides high efficiency and low noise operation. It achieves high efficiency by utilizing lower frequency switching, which helps reduce the ripple voltage noise at the output.In addition to low noise and high efficiency, the XR76203EL-Q also offers a wide adjustment range of 0.8V to 5.5V, with optional remote shutdown, skip mode and voltage positioning. The skip mode and voltage positioning helps provide more efficient operation at light-load condition, and when the load is less than 1.3V, the converter can shut down the cycle, reducing power consumption and improving system overall efficiency.

Conclusion

The XR76203EL-Q DC-DC buck regulator from Exar provides low noise, high efficiency and small size and is applicable for a wide range of applications. Its low noise, high efficiency, and wide range voltage helps to maximize power savings, achieve highest efficiency and support multiple devices. Furthermore, the skip mode and voltage positioning features help extend functionality and improve system efficiency and power savings at light-load condition.

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