TC1303B-1P0EMFTR

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PMIC (Power Management Integrated Ciruits) are ubiquitous components that are found in a wide array of electronic devices. Specifically, Voltage Regulators are found in almost all electronic devices to regulate the power supply. Within this wide field, Linear + Switching Voltage Regulators exist, and the TC1303B-1P0EMFTR is a part of this kind of regulators.

Application Field

The TC1303B-1P0EMFTR is a linear + switching voltage regulator designed to provide regulated outputs with a wide input voltage range. Specifically, it is designed to regulate output voltages of 3.3V, 5V, 12V, and 15V from a wide input of 4.2V to 18V. This makes the TC1303B-1P0EMFTR ideal for use in automotive, industrial, solar, and other applications where wide input voltage ranges might be encountered. It also has a low quiescent current of Max 6mA for automotive applications, making it a highly efficient device.

Working Principle

The TC1303B-1P0EMFTR uses a combination of linear + switching regulators to regulate output voltages. Most of the time, the device runs in the linear stage, meaning that the chip can operate both in linear and switching modes. In the linear mode, an internal reference voltage is used as the reference which is compared with the output voltage to regulate it. This allows for very accurate regulation of the output voltage. When the load changes and the linear stage is no longer sufficient, the chip will enter into the switching mode. Here, an internal oscillator is used to control the switching action, while an internal high-frequency switch drives the power MOSFET to convert the input voltage to the output voltage through a series of on/off cycles. The switching action also allows for higher efficiency, as the chip can quickly switch between linear and switching modes depending on the load and input voltage.

Conclusion

The TC1303B-1P0EMFTR is a linear + switching voltage regulator designed to provide regulated outputs with a wide input voltage range from 4.2V to 18V. This makes it ideal for use in automotive, industrial, solar, and other applications where wide input voltage ranges might be encountered. At the same time, its low quiescent current makes it a highly efficient device. Furthermore, its combination of linear + switching regulators allows for accurate regulation of the output voltage and higher efficiencies in switching mode.

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