ADP2125ACDZ-1.26R7

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PMIC (Power Management Integrated Circuits) products are utilized in virtually all electronic systems. In particular, DC/DC switching regulators are an important type of PMICs; they are increasingly becoming popular due to their small form-factor, energy efficiency and high-speed response. ADP2125ACDZ-1.26R7 is the candidate of DC/DC switching regulator with the smallest form factor and the highest performance.

Application Field:

ADP2125ACDZ-1.26R7 is a synchronous, dual output converter with 1.26V output voltage, designed for powering processor core, RAM, or small FPGA and microcontrollers. This power management IC (PMIC) is specifically designed for small form-factor applications such as notebook PCs, Ultrabooks, tablets, and industrial handhelds. It can also be used to controls the voltage regulation of AC/DC adapters and mobile batteries. With the advantages of low profile, low input/output ripple and high efficiency, ADP2125ACDZ-1.26 is the perfect choice for applications with space constraints.

Working Principle:

The ADP2125ACDZ-1.26R7 is a two-phase buck converter, combining two two-phase Buck converter cores with a dual-level OR-ing FET in a single integrated circuit, to achieve high performance and power density. The output voltage and current mode Ratio is adjustable with the internal control logic circuit. The internal feedback control logic is designed to maintain a constant output voltage, by comparing the sensed voltage to an internal reference. Switching frequency is 210KHZ.

The ADP2125ACDZ-1.26 features integrated dual N-channel MOSFETs, to reduce the part count in the system. It is protected from any kind of over-current or over-voltage condition with integrated circuits, thus resulting in improved reliability. Furthermore, the IC features a thermal shutdown system for its protection. The power supply rejection ratio (PSRR) is very high so that the output voltage does not change significantly when the input voltage fluctuates, which helps in controlling the output voltage with higher accuracy.

In addition, Sleep/Deep-Sleep (power down modes) can be used to reduce the overall power consumption while not in use. Also, Active Discharge function can be used to quickly discharge the output voltage to GND, without having to turn off the power switch. The DC/DC switching regulator offers very low quiescent currents with maximum efficiency, making it suitable for battery-powered applications.

To conclude, ADP2125ACDZ-1.26R7 is a highly efficient DC/DC switching power regulator, designed for a wide range of portable and battery-operated applications. It offers a high power density, built-in protections, and low current consumption, thus providing improved efficiency and reliability. Moreover, its compact form-factor makes it suitable for space-constrained applications, such as notebook PCs and Ultrabooks.

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