BD9122GUL-E2 Integrated Circuits (ICs)

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The BD9122GUL-E2 is a DC-DC switching regulator with a low on-resistance MOSFET, making it ideal for power supply applications with limited current. It has an operating temperature range of -40 °C to 85 °C and a maximum output voltage of 20V.

BD9122GUL-E2 is suitable for a wide range of applications such as industrial power supplies, telecommunication systems, and automotive power systems. It is designed to provide excellent efficiency and low output ripple noise. It can achieve an output current in continuous mode up to 4A and can be parallel connected to meet higher current requirements.

The BD9122GUL-E2 switching regulator operates in the step-down (buck) and step-up (boost) converter mode with a switching frequency that is adjustable up to 2MHz. Its integrated power MOSFETs minimize losses and reduce the size of the external components. The switching regulator also features thermal shutdown and over temperature protection, preventing any temperature-related damage.

The working principle of the BD9122GUL-E2 switching regulator is based on cyclic operation. When an external voltage is applied to the device, a pulse width modulated (PWM) signal is generated by the internal circuit in order to create a switchable current to the output stage. At the end of each cycle, the voltage at the output stage is measured and the next pulse width is adjusted, ensuring the output voltage is kept at the set value.

The BD9122GUL-E2 switching regulator uses a duty cycle control technique in order to achieve the desired output voltage. When the duty cycle is increased, the output voltage becomes higher and vice-versa. This duty cycle can be programmed using external resistors, allowing the user to adjust the output voltage precisely.

In addition to its adjustable output voltage, the BD9122GUL-E2 provides a wide range of protection features to ensure its reliable operation in various environments. It has an under-voltage lockout protection (UVLO) to protect the device from any short circuits, as well as an over-temperature protection (OTP) to prevent damage from excessive heat. It also features an output over-voltage protection (OVP) to protect the device from any transient voltages.

The BD9122GUL-E2 switching regulator is an ideal solution for a wide range of applications requiring a reliable power supply. It offers high efficiency, low output ripple noise, adjustable output voltage, and advanced protection features, providing a comprehensive solution for any power needs.

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