BD9B301MUV-LBE2

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BD9B301MUV-LBE2 is a DC to DC switching regulator belonging to the PMIC - Voltage Regulators - DC DC Switching Regulators family. This regulator is suitable for mobile device, low terminal high efficiency, and it includes a dedicated low voltage shutdown circuit. It consists of a pulse width modulation (PWM) mode regulator IC and a N phase circuit MOSFET for DC to DC conversion control.

The BD9B301MUV-LBE2 has a switching frequency of 800kHz and an output current of up to 3A. Its output voltage is adjustable within a range of 1.5 to 7V, and is optimized for low impedance multi-strand wire. The operating input range is from 2.7 to 6V and its output ripple is low enough to be considered low noise.

The main features of BD9B301MUV-LBE2 are current mode control, compatible with mobile device supply voltage, the built-in soft start circuit and overvoltage protection circuitry. Also, this regulator offers the flexibility and improved efficiency over wide load range. The low IQ mode, current mode architecture, soft start and over voltage protection features makes this regulator suitable for use in mobile devices where low current consumption and low heat production are a must.

In terms of its working principle, the BD9B301MUV-LBE2 is based on the current mode control architecture. The current mode control consists of an outer voltage loop, which maintains the output voltage, and a current loop that keeps the output current constant. This type of control provides a fast and precise transient response, good thermal stability and very low output-voltage ripple.

The BD9B301MUV-LBE2 also utilizes a high-side driver to keep the output voltage well regulated even in the presence of input voltage transients. The driver monitors the feedback voltage and triggers a FET switch to regulate the output voltage. Lastly, the BD9B301MUV-LBE2 has a dedicated low-voltage-shutdown circuit to prevent over-discharge of the battery.

The BD9B301MUV-LBE2 is suitable for diverse application fields, such as digital still cameras, mobile phones and PDAs. This regulator’s remarkable features make it the perfect choice for mobile device supply voltage applications where the ultimate goal is to satisfy energy efficiency, product performance and cost considerations.

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