FDMA6676PZ Discrete Semiconductor Products

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FDMA6676PZ is a P Channel Zener-Protected MOSFET voltage regulator, with an operating voltage range of 8 V to 16 V, and an output continuous current of up to 6.6 A. It is available as an SOT23 and a SOIC-8 package and is suitable for use in mixed-signal and digital applications.

The FDMA6676PZ is a P channel (V_GS = －4.5 V) enhancement-mode MOSFET, with a Zener protected source terminal. It has an on-resistance of 153 Ω (at V_GS = －3.3 V, 4.5 V ≦ V_DS ≦ 8 V), a gate-source threshold voltage of －4.5 V, a breakdown voltage (V_BR) of 8 V, and a power dissipation of 1.2 W. The device is ESD and latch-up protected and operates from a maximum junction temperature of +150°C.

The FDMA6676PZ is designed for use in automotive and industrial, as well as computer, office automation (OA) and telecommunications applications, including power supplies, DC-to-DC converters, battery chargers, power management modules, display backlight, switching regulators, and linear regulators. The device is also suitable for use in applications that require high current levels, such as DC motor control, LED lighting and bus converters.

Working Principle

A MOSFET (Metal Oxide Semiconductor Field Effect Transistor) is an electronic component that consists of an insulated-gate structure. The gate is used to control the flow of charge carriers or current between a source and a drain terminal. Its operation is based on the effects of the electric field on a localized region of the channel between the source and the drain. A change in the voltage applied to the gate affects the conductivity of the channel, which in turn affects the flow of charge carriers from the source to the drain.

A Zener-protected MOSFET is an enhancement-mode MOSFET that has a Zener diode connected between its gate and its source terminal. This diode provides a path for current to flow between the gate and the source in the event of a high gate-source voltage, thus preventing latch-up and possible destruction of the device. It also helps to protect from electrostatic discharge (ESD) by providing a low-impedance path for current to discharge.

The operation of the FDMA6676PZ is based on the principles of MOSFET operation, combined with the added protection of the Zener diode. The device has an on-resistance of 153 Ω so that it can handle higher current load with improved efficiency. When used as a voltage regulator, it can be used to regulate an input voltage and ensure that an output voltage remains constant, even when the input voltage varies.

The FDMA6676PZ is an ideal component for mixed-signal, digital and automotive applications that require reliable power supply and voltage regulation. It offers high-current capabilities, low-on-resistance and ESD protection, as well as stable operation even in the event of a power supply voltage drop. Its Zener-protected source terminal provides excellent protection from ESD and latch-up, ensuring a high level of reliability even in the worst-case scenarios.

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