AP1084D15G-13

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AP1084D15G-13 belongs to the category of PMIC – Voltage Regulators – Linear. It is a positive adjustable, low dropout and low noise linear voltage regulator whose output voltage can be adjusted from 0.5V to 4.2V. AP1084D15G-13 has very low quiescent current of 4uA and requires no load current of below 8uA. It is available in SOT23-5 and SOT89-3 package and is very suitable for portable devices and other battery powered systems.

Application field of AP1084D15G-13

AP1084D15G-13 is mostly used for portable devices and other battery powered systems. It is widely used in small form factor applications such as mobile phones, HDD, cameras, notebooks and tablet PCs. It is also suitable for low power Bluetooth applications because of its low quiescent current. Apart from these applications, the AP1084D15G-13 is also suitable for other power management circuits such as amplifier and LCD backlight illumination, as well as other general purpose linear regulator applications.

Working Principle of AP1084D15G-13

AP1084D15G-13 uses a transistors based linear regulator topology, which consists of a PNP pass element and NPN reference element. The output voltage of the device is an adjustable voltage equal to the external reference voltage, which is provided through the reference pin. Source of the pass element is connected to the output pin, while the emitter is connected to ground. As the load current increases, the voltage at the output decreases which makes the PNP pass element to regulate the load current. The value of current flowing through the pass transistor determines the output voltage. In order to keep the output voltage constant, the AP1084D15G-13 monitors the feedback voltage from the output and drives the pass element accordingly.

The core of the regulator is a boosting oscillator, which controls the current through the pass element. This oscillator is running at 180kHz, and is optimized for low power consumption. The AP1084D15G-13 supports both positive and negative output voltages, which helps conserve power in many applications.

Conclusion

AP1084D15G-13 is an ideal device for low dropout, low noise and adjustable voltage linear voltage regulator. It has ultra-low quiescent current, low noise and requires no load current below 8uA. With its small SOT23-5 and SOT89-3 package size, the AP1084D15G-13 is ideal for portable devices and other battery powered systems. The device uses a transistors based linear regulator topology and is regulated by a boosting oscillator at 180kHz. Combined with its wide range of features and advantages, the AP1084D15G-13 is a perfect solution for various applications.

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