BD9E151NUX-TR Integrated Circuits (ICs)

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DC-DC Buck Regulators are increasingly becoming popular in the electronics industry as engineers strive to achieve better efficiency in switching power supplies. They enable the step-down of a high voltage/high current supply voltage or line voltage to a lower voltage/current that can be used in applications such as laptops, smartphones and other mobile devices.

BD9E151NUX-TR is a new type of DC-DC stepping buck regulator for low voltage application. It is suitable for step-down DC-DC power regulations from an input voltage between 2.6V to 5.5V to an output voltage of 0.8V to 4.2V. The BD9E151NUX-TR can deliver a continuous output current up to 3A with excellent efficiency, and with its low noise, the BD9E151NUX-TR is suitable for noise critical applications.

With a fast transient response, overvoltage limitation and a shutdown mode, the BD9E151NUX-TR is a feature-rich buck regulator making it ideal for battery-powered devices or any small form factor products that uses a low voltage regulated supply.

Key Features of BD9E151NUX-TR

• Input Voltage: 2.6V to 5.5V
• Output Voltage: 0.8V to 4.2V
• Output Current: 3A
• Efficiency: Up to 93%
• Frequency: 700kHz or 1.2MHz

Application Field of BD9E151NUX-TR

The BD9E151NUX-TR is a versatile buck regulator designed to accurately regulate and control the output voltage of an input power source. It is ideal for use in applications such as:

• Battery-powered portable electronics or embedded applications.
• Networking, Wi-Fi and Bluetooth devices.
• Wireless Power Transceiver (WPT) Applications.
• Industrial Control Systems
• Voice Recognition Products and Systems
• Point-of-Sale Terminals
• GPS and Wearables

Working Principle of BD9E151NUX-TR

At the core of this buck regulator is a high-efficiency, synchronous P-channel and N-channel buck converter topology that uses low on-resistance power MOSFETs to deliver high current output. This allows for high conversion efficiency for both large and small input voltage applications.

The BD9E151NUX-TR buck converter works by rapidly discharging and charging a small inductor from a high-voltage power source until the output voltage reaches its desired level. The inductor between the input and output voltage acts as a filter, smoothing the high-frequency power supply noise, and the buck converter includes an internal soft-start to ramp up the load current to its predetermined level.

In addition, the BD9E151NUX-TR has a comprehensive feature set including adjustable current limit, overvoltage protection, thermal shutdown, and adjustable switching frequency. All of these features help to further improve the performance and safety of the device.

Conclusion

The BD9E151NUX-TR is a general-purpose switch regulator designed to deliver high efficiency and low noise performance in battery-powered and other low voltage applications. With features such as adjustable current limit and overvoltage protection, the BD9E151NUX-TR is ideal for powering low voltage applications such as portable electronics, embedded systems, voice recognition products, and point-of-sale terminals.

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