BD9123MUV-E2 Integrated Circuits (ICs)

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BD9123MUV-E2 application field and working principle

BD9123MUV-E2 is a DC/DC switching regulator from Rohm semiconductor and it is one of the most recently released voltage regulators in the PMIC family. It is specifically designed for mobile applications and features internal MOSFETs for high efficiency step-down DC-DC conversion.

The BD9123MUV-E2 features an integrated low-duty cycle pulse-width modulation controller, a low quiescent current, low standby power and high operating temperature range that makes it suitable for battery-powered products with tight size constraints. It is also designed with a built-in Power-Good signal so that the system can be safely operated with a low dropout regulator, preventing over-voltage and over-current conditions.

Application field

The BD9123MUV-E2 is designed specifically for portable and embedded applications. It can be used in a variety of portable applications, such as portable tablets, laptops, smartphones and embedded products, such as set-top boxes, gaming consoles, and motor drivers. It can also be used in embedded systems such as industrial and automotive applications. Since its high operating temperature range, it is suitable for applications where thermal characteristics are important.

Working Principle

The BD9123MUV-E2 is a DC-DC switching regulator. It uses pulse-width modulation (PWM) to control the amount of voltage passing through the device. It is designed with an integrated low-duty cycle direct mode control scheme, which allows for a fast transient response. The BD9123MUV-E2 is capable of providing a voltage output of 1.8V to 5V with up to 600mA of output current. As the device is operated in PFM (power-frequency modulation) mode, it is able to provide low quiescent current, low standby power, and high operating temperature range.

The working principle of the BD9123MUV-E2 involves a PWM comparator driving the power transistor at a given switching frequency. This frequency is determined by comparing the input voltage to the voltage reference. The output voltage is determined by the frequency of the PWM comparator and the value of the voltage settings. The BD9123MUV-E2 also has an internal synchronous rectifier that ensures a high efficiency of conversion.

At any given moment, the amount of energy in the circuit is determined by the amount of current and voltage that is flowing. This energy is then regulated by the BD9123MUV-E2 such that the current and voltage remain within a given range. This ensures that the circuit is protected from over-voltage and over-current conditions.

The BD9123MUV-E2 is a very versatile device and can be used in a variety of applications. It is capable of providing a voltage output of 1.8V to 5V with up to 600mA of output current. It features a low quiescent current, low standby power, and high operating temperature range, making it suitable for battery-powered products with tight size constraints. It also provides a built-in Power-Good signal to monitor and protect the system from over-voltage and over-current conditions.

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