ZLDO1117K12TC Integrated Circuits (ICs)

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The ZLDO1117K12TC is a high performance low dropout (LDO) linear regulator from Diodes Incorporated. The device is designed to provide a regulated DC output voltage for a wide range of applications. The device is capable of supplying voltage ranging from 0.6V to 5.5V with up to 1.5A of current. It also has a wide range of operating temperature, from -40°C to 85°C.

The ZLDO1117K12TC is available in both surface mount and through-hole packages. It has a fully integrated low on resistance (Rout) power MOSFET, enabling low dropout voltage and high output current levels. This feature makes it ideal for a wide range of applications.

The ZLDO1117K12TC is a versatile and thermally efficient device, which makes it a suitable choice for a variety of applications. It is commonly used in telecom/networking equipment, audio/video systems, battery-powered equipment, automotive or industrial control applications, notebook/netbook computers, portable electronic devices, and other applications where a low dropout linear regulator is needed.

In order to understand the working principle of the ZLDO1117K12TC, it is important to first look at the basic block diagram of the device. The device consists of an input stage, an output stage, and a control circuit. The input stage consists of an N-channel MOSFET, which acts as a current source for the device. The output stage consists of an NPN bipolar junction transistor (BJT) connected in series with the MOSFET. The control circuit consists of a low-dropout voltage regulator, small-signal bias circuit, and an on-chip temperature compensation system.

The ZLDO1117K12TC utilizes a high gain error amplifier to monitor the output voltage and automatically correct any discrepancies from its set value. A feedback signal from the error amplifier is used to control the gate voltage of the power MOSFET. This causes the MOSFET to adjust its drain current accordingly, thus regulating the output voltage.

The device is protected against overcurrent and reverse current. Overcurrent protection is enabled through an adjustable current limiter that prevents the device from sustaining a continuous overload current. Reverse current protection is enabled such that the device limits the current flow to the output terminal when the input voltage is lower than the output voltage.

The ZLDO1117K12TC is a relatively low noise, low dropout voltage regulator suitable for providing stable and accurate output voltage. It is an excellent choice for applications demanding a low dropout voltage regulator with features such as high output current and wide temperature range. It is suitable for use in a wide range of applications such as telecom/networking equipment, audio/video systems, battery-powered equipment, automotive or industrial control applications, notebook/netbook computers, portable electronic devices, and other applications.

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