FAN1086D285X

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The FAN1086D285X is a high-precision voltage regulator, primarily used in the PMIC - Voltage Regulators - Linear application field. It is designed and manufactured to fulfill both cost-effective and high-precision demands. The integrated circuitry of this part has a low input voltage, dropout voltage, and power dissipation. This makes it ideally suitable for portable equipment, and computer and peripheral equipment applications.

The FAN1086D285X is specifically designed to provide a regulated output voltage of 2.85V with a 0.1% accuracy over the entire temperature range of -40°C to +85°C. The device incorporates an on-board sense resistor, requiring no external output sense connection to the load. The part contains an internal programmable current limit, thermal shutdown circuit, overvoltage shutdown circuit, and reverse current protection. Its low dropout current and wide input voltage range, ranging from 4.5V to 20V, make it suitable for various applications where power supply transients are present.

The FAN1086D285X is designed as a low dropout, current mode linear regulator with a variety of features to ensure that a regulated output voltage is provided. This device contains a power MOSFET, which is used to limit the output current in case of a short circuit. This device also contains two current source transistors, one for setting the voltage reference and one for stabilizing the output voltage. The current reference transistor is stabilized by the output voltage from the power MOSFET, thus providing a constant voltage reference at the output.

The FAN1086D285X also includes an error amplifier, which provides the necessary feedback to ensure that the output voltage will remain constant in the presence of variations in the load current. The error amplifier compares the actual output voltage with the voltage reference provided by the current reference transistor. If the output voltage drops below the set limit, the amplifier will increase the power MOSFET gate drive until the output voltage is stabilized. Conversely, if the output voltage rises above the set limit, the amplifier will reduce the power MOSFET gate drive until the output voltage is again stabilized.

The FAN1086D285X also contains a thermal shutdown circuit and an overvoltage protection circuit to protect the device from external or internal fault conditions. The thermal shutdown circuit monitors the junction temperature of the power MOSFET and turns off the device in case of an over temperature condition. The overvoltage protection circuit monitors the output voltage and disconnects the output voltage in case of an overvoltage condition. Both of these protection circuits help to ensure that the device will remain safe and reliable in the presence of various fault conditions.

To summarize, the FAN1086D285X is specifically designed for PMIC - Voltage Regulators - Linear applications, and is optimized for cost-effectiveness and high accuracy. It utilizes a low dropout current, wide input voltage range, and internal current limit, thermal shutdown, and overvoltage protection circuits. Its error amplifier ensures that the regulated output voltage remains constant even in the presence of variations in the load current. This makes it suitable for a variety of applications where power supply transients are present.

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