NCP1117DT12G

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NCP1117DT12G is an adjustable low-drop positive voltage regulator with a wide input voltage range and low quiescent current. It is an ideal solution for a wide range of applications such as post regulation, system level power management, distributed regulated power supply networks, precision regulation, and battery-powered systems. The device is designed to regulate voltages as low as 0.8V as well as provide adjustable output voltages up to 25V.

This device is categorized in PMIC - Voltage Regulators - Linear and consists of an active device that steers current to maintain a regulated voltage. It carries the main current drawn by the load and dissipates the excess power as heat, which means that it requires an adequate heatsink to prevent thermal shutdown. The device contains an error amplifier, a reference voltage source, and a built-in bi-directional Current Limit phase. These components work together to provide accurate and efficient regulation.

When the device is unloaded, the Current Limit phase is inactive, allowing the output voltage to remain steady. When the load begins to draw too much current, the Current Limit phase quickly reduces the output current and the error amplifier will sense the change and make the appropriate adjustments to the reference voltage. This helps ensure stable voltage regulation even when the load current varies greatly.

The device also features significant protection against undesirable input and operating conditions. It has an over-current protection (Newton’s Loop), an over-temperature protection, a bulk capacitor short-circuit protection and an under-voltage protection. This wide range of protective features make the device suitable for critical applications and help ensure reliable system operation.

The voltage regulation accuracy of this device is dependent on the chosen components. A good choice of resistors and capacitors will enable precise regulation while still regulating over a wide input voltage range. When used in conjunction with a well-designed PCB, the NCP1117DT12G can provide accurate voltage regulation with low output voltage ripple, which can be especially useful in battery-powered systems.

In summary, the NCP1117DT12G is a highly versatile voltage regulator with a wide range of features and protections. Its low quiescent current, wide input voltage range and high regulation accuracy make it well-suited for a number of applications. The device is well-protected against a variety of conditions, ensuring reliable system operation and an excellent performance.

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