S-818A25AMC-BGFT2G

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S-818A25AMC-BGFT2G is a voltage regulator and a linear PMIC (Power Management IC) that can monitor, control, and maintain the voltage level supplied to a power system. When applied to systems that require voltage regulation, the S-818A25AMC-BGFT2G can maintain a consistent output voltage level, even when the input voltage level or load current changes.

The application field of S-818A25AMC-BGFT2G varies by its performance, which includes adjustable output current, low quiescent current, low voltage dropout (LDO), and wide input voltage range. Such performance attracts engineers to design linear power supplies and charge circuits for automotive, communications, consumer and industrial applications.

The working principle of S-818A25AMC-BGFT2G is to compare the output voltage VOUT with the reference voltage VREF. When VOUT exceeds VREF, input voltage will be increased to counterbalance the increase of output voltage; when VOUT is lower than VREF, current will be reduced, so that the output voltage will still remain the same. This job is done by the internal error amplifier.

When it comes to output pins of S-818A25AMC-BGFT2G, they are connected to the regulating resistor divider chain, which is in charge of generating the reference voltage VREF. And the GND pin connects to ground to eliminate leakage current.

Besides providing constant voltage, S-818A25AMC-BGFT2G is also capable of inrush current limiting, over voltage protection, current protection, thermal protection, and power good control. Inrush current limiting is done by an internal current limit circuitry while over voltage protection is done by an internal power MOSFET. Thermally, S-818A25AMC-BGFT2G is designed with a special temperature controller that monitors its junction temperature. Voltage regulator failure or success is indicated by lower and higher voltage of the power good signal respectively.

S-818A25AMC-BGFT2G is literally a life savior that prevents abnormal current and voltage fluctuation, and it is a must-have for systems such as microcontroller-based equipment, laptop power supplies, and LED lights.

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