BD9323EFJ-E2

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BD9323EFJ-E2 is a DC-DC switchingregulator by Panasonic. It is a Pulse Width Modulator(PWM) type device for use in low voltagepower supplies for products such as mobile phones, Blu-ray players, tablets, cameras, and gameconsoles. This regulator uses a highly accurate and fast response Pulse Width Modulationalgorithm to regulate the input voltage of a fixed voltage level in a power supply system,enables fast transient responses.

The BD9323EFJ-E2 is designed for voltage-mode operated Step-up, Step-down and Inverting DC/DC converters, as well as Flyback converters. It supports wide inputand output voltage range, and is able to rapidly detect the output voltage. It is able to operateat both constant voltage and constant current mode. It supports a variety of protection functions such asover-current protection, over-voltage protection and over-temperature protection. With highaccuracy of the output voltage, it enables low ripple of the DC/DC converter, assuring robustperformance.

Its primary applications include powering up mobile peripherals such as display, audio andcamera devices, as well as providing small power supply systems with low power elements, such as sensors and memory cards.

The BD9323EFJ-E2 is a force frequency PWM Operating at a preset frequency, the selected setting will automatically be maintained regardless of the duty cycle, enabling users to vary duty cycle for changing output voltage. The operating frequency isprogrammable with an external resistor, providing flexibility and design optimization for theapplication.

By internally sensing the output voltage, it does not require a sense resistor between the output and the regulator to adjust the voltage, saving cost, component count and PCB space. The BD9323EFJ-E2 is a high-efficiency and low-ripple converter solution with embedded protections and excellent line/load transient responses.

The BD9323EFJ-E2 includes an on-chip PWM control circuit and an oscillator, along with a set of protection circuits and an internal logic to control the operation of a switched-mode power supply. The device is available in an 8-pinVSON package and is ideal for applications that require a low component count and a smallpresence on the printed circuit board.

To sum up, the BD9323EFJ-E2 is a high-performance DC-DC switching regulator from Panasonic, offering force frequency PWM operating, wide input and output voltage range, and fast transient responses. With fast detection and accurate voltage regulation, the BD9323EFJ-E2 is designed for voltage-mode operated DC/DC converters and supports many protection functions, making it the perfect solution for powering up mobile peripherals and small power supply systems. Furthermore, it features an on-chip PWM control circuit and oscillator, as well as low component count and small PCB presence for ultimate design flexibility.

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