NCP603SN500T1G

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The NCP603SN500T1G is a highly integrated linear voltage regulator for use in fixed and variable voltage systems. It provides a regulated output voltage with excellent load and line regulation, as well as low noise and high efficiency. The NCP603SN500T1G is designed to operate from a single +12V supply and operates up to 500mA at up to +5.5Voutput.

The NCP603SN500T1G is a part of ON Semiconductor\'s NCP600 family of voltage regulators and includes a low-voltage, low-power-consumption voltage-mode DC/DC converter and a linear voltage regulator, providing adjustable-output voltage up to +5.5V. The device includes an internal startup circuit and can be operated with low-input-voltage batteries, making them suitable for portable applications.

The NCP603SN500T1G features a ±2% line regulation, over-current, short circuit and thermal protection to prevent damage. The device provides a 1% load regulation and is stable with any low-ESR ceramic output capacitor. The device offers high power efficiency and is capable of delivering up to 500mA at +5.5V output.

The NCP603SN500T1G offers a wide range of application fields, including the control of a wide range of DC motors, industrial and medical instruments, power MOSFET, audio amplifiers, portable medical and industrial instruments, battery-powered equipment, instrumentation, alarm systems and embedded systems.The device is also suitable for general-purpose power management applications, including automotive, telecommunications, networking, and computing applications. Furthermore, the device is capable of providing low-voltage ICs and LED drivers with power in a high-current, low-dropout, low-noise environment.

The NCP603SN500T1G operates on a single +12V supply and can provide an adjustable output voltage up to +5.5V. The voltage is set using two external resistors, with a maximum accuracy of ±2%. This ensures an accurate output voltage even with an input-supply voltage that fluctuates within a wide input range.The device includes an internal start-up circuit and low-voltage protection to reduce the average supply current. The device provides a well-controlled output current and is stable with any low-ESR ceramic output capacitor. The device also offers over-current, short-circuit, and thermal protection.

The working principle of the NCP603SN500T1G is based on a p-channel MOSFET with a resistive divider network to provide a stable reference voltage. The reference voltage is compared to the output voltage and the difference is amplified by an error amplifier, resulting in a voltage that is proportional to the output current. The resulting voltage is then compared to the output voltage to determine the output current.When the device is shut down, the gate of the P-MOSFET is connected to ground, preventing the output voltage from rising above its set value. The voltage regulator can be shut down in a number of ways, including through the control pins, or by setting the output voltage to 0V.

In conclusion, the ON Semiconductor NCP603SN500T1G is a highly integrated linear voltage regulator that provides an adjustable output voltage up to +5.5V with excellent line and load regulation. It is suitable for use in a range of applications, including motor control, industrial and medical instruments, and low-voltage ICs and LED drivers. Additionally, its internal start-up circuit and low-voltage protection reduce the average supply current. The device also includes over-current, short-circuit, and thermal protection.

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