AP1117D18G-13

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The AP1117D18G-13 voltage regulator is a linear voltage regulator belonging to the PMIC (power management integrated circuit) voltage regulator family. This device is a 3-terminal low dropout (LDO) regulator, which is specifically designed to provide multiple low-dropout and low-noise outputs. The AP1117D18G-13 can be used in a wide range of applications such as voltage regulation, power conversion, and battery-backed system applications. In this article, we’ll discuss the application field and working principle of the AP1117D18G-13.

AP1117D18G-13 is mainly used for economically providing multiple low-dropout and low-noise outputs for systems with multiple power demands. These demands may include CPU core voltage, reference voltage, and I/O voltage levels in mobile and embedded devices. The AP1117D18G-13 has a low output voltage noise of only 30mV when a 1µF ceramic capacitor is used as the output filter. This makes it an ideal choice for end products requiring high precision and low noise regulation.

The AP1117D18G-13 is also used in voltage regulation and power conversion applications. This device can be used to provide 3.3V, 1.8V, and 1.5V outputs with low dropout and excellent line and load regulation. The device’s high power supply rejection ratio (PSRR) and minimum output voltage ripple can help reduce power consumption and improve product reliability. The device can also be used as a buffer or voltage shifter, enabling energy-efficient power conversion from a higher voltage to a lower one.

The AP1117D18G-13 is also an ideal choice for battery-backed systems. Its low dynamic quiescent current and minimum off-mode current make it an excellent choice for systems-on-a-chip (SoCs) that require a reliable and sleep-mode operation. The device’s advanced thermal design allows operation up to +125°C without compromising its performance.

Now let’s look at how the AP1117D18G-13 works. The device adopts an advanced circuit topology that includes a cascode P-MOSFET and N-channel MOSFET for output short-circuit protection. The device uses an on-chip resistive element to sense the input voltage and provide feedback to the control circuit. The feedback signal is compared with the internal reference voltage and the voltage error is then amplified by the error amplifier. The error amplifier output is fed back to the gate of the cascode P-MOSFET to control the output voltage.

The AP1117D18G-13 is offered in a SOT-223 package and can operate in temperatures ranging from -40°C to +125°C. The device has a low operating current of 180 μA and a low dropout voltage of only 250mV at 0.1A load current. It also offers protection against overvoltage, overcurrent, and overtemperature conditions. The device is also RoHS-compliant and can meet the needs of worldwide safety standards.

The AP1117D18G-13 is a versatile and reliable voltage regulator that can be used in a wide range of applications. Its high PSRR, low output voltage noise, and low dropout voltage make it an ideal choice for systems with multiple power demands. The device’s advanced thermal protection and protection features guarantee system reliability and product longevity. Thus, the AP1117D18G-13 is a versatile and reliable solution for most voltage regulation and power conversion applications.

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