BA178M12FP-E2

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BA178M12FP-E2 is a type of Linear Voltage Regulator module that belongs to the Polorome Series Battery Management IC family of Prime-mover components. In particular, the BA178M12FP-E2 module is a 12V output, synchronous buck DC-DC converter.

In terms of its application field, the BA178M12FP-E2 model is suitable for an input voltage range of 4V to 28V, while providing an adjustable output of 0.9V~12V. It is extensively used in applications including automotive telemetric systems, RS-232 interface systems, and inner car reference voltage supplies.

As for the working principle of the BA178M12FP-E2, its operating circuit comprises a high-side and a low-side MOSFETs (Metal Oxide Semiconductor Field Effect Transistors) as switches, both controlled by the Pulse Width Modulator (PWM) of the IC. The control loop of the device ensures a constant output voltage at the load no matter the changes happening in the input voltage or the load current. This functioning is elementally ensured by the feedback regulation of the PWM which provides the duty cycle commensurate with the input voltage and load current.

The operating frequency of the module is internally programmed in the range of 350KHz to 1.1MHz. In addition, it also provides a low ripple noise and a high efficiency of above 90%. Moreover, it is highly integrated with a standby function, overhead voltage protection, output current protection, and thermal shutdown protection. This makes it convenient to use and delivers more robust protection.

The layout of the converter is designed in such a way that it can be mounted on the same plane of the CDMA base station with its component side facing downward, which allows for greater thermal dissipation of heat. This ensures the device to deliver reliable output even when its operating at an increased temperature of up to 85°C.

In conclusion, the BA178M12FP-E2, which belongs to the PMIC - Voltage Regulators - Linear family of Prime-mover components, is a type of Linear Voltage Regulator module suitable for a variety of automotive and telemetric applications. It operates by ensuring a constant output voltage with a high efficiency, an adjustable output voltage range of 0.9V to 12V, a high operating frequency range of 350KHz to 1.1MHz, and a low ripple noise. This makes it a highly sought after choice in various low voltages applications.

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