ADP166ACBZ-3.3-R7 Integrated Circuits (ICs)

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Power management ICs (PMICs) are integrated circuits that are used to manage and provide power to other electrical components in a device. As the demands of portable devices and consumer electronics become more power-hungry, PMICs are becoming increasingly important for efficient system power management. Voltage regulators, in particular, are key components for providing a stable output voltage, and the ADP166ACBZ-3.3-R7 is a 3.3V linear voltage regulator available in a 4-leaded tiny SOT-23 package.

The ADP166ACBZ-3.3-R7 is a resistor-programmable low-dropout linear regulator (LDO) ideal for a variety of applications requiring a regulated 3.3V voltage rail. Some of the typical application fields for this LDO are PDAs, digital still cameras, portable media players, and other handheld devices with high power consumption. Its highly integrated design enables an output voltage to be trimmed in less than 8ms. This helps minimize output voltage deviation caused by variations in temperature, line, and load.

The ADP166ACBZ-3.3-R7 works by means of a Linear Regulator Voltage (LRV). The LRV has two main circuits, a voltage reference circuit and an error amplifier circuit. The voltage reference circuit supplies the reference voltage, which is compared with the input voltage. If the input voltage is higher than the reference, the error amplifier produces an output corresponding to the difference between the two. This output is sent to the pass element, which reduces the input voltage to the level of the reference voltage. As a result, the output voltage is regulated to the desired voltage level.

To reduce power consumption in sleep or near-idle modes, the ADP166ACBZ-3.3-R7 has an ultralow quiescent current of only 1.5 μA. In addition, it has an enable pin that allows for turning off the regulator for reducing power consumption even further. It also has an Over-Current Shutdown (OCS) protection, which ensures that the system’s power delivery is safe in the event of large output transients. The OCS can be enabled by setting the OCS_EN pin to low.

In short, the ADP166ACBZ-3.3-R7 is an ideal 3.3V linear regulator for applications requiring a highly accurate, low-power, stable, and secure output voltage. Its compact package and low quiescent current make it an excellent choice for battery-operated systems, while its highly integrated design makes it an ideal device for portable applications.

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