AOZ1052PI

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AOZ1052PI is a DC to DC switching voltage regulator, belonging to the PMIC (Power Management Integrated Circuit) family. It is optimized for space constrained applications and provides close loop design assurance for good transient performance.

This voltage regulator includes PMIC functionality such as input and output overvoltage protection, output undervoltage protection, overcurrent and short-circuit protection. Its architecture also allows for high efficiency and low noise operation. Its output can be programmed from 0.7V to 6V, with a nominal output voltage of 5V.

The device is suitable for both point-of-load and distributed power architectures. Applications include: distributed and point-of-load power, telecom and datacom systems, processors, graphics cards, memory modules, DSP, and other embedded systems.

The AOZ1052PI’s working principle relies on a power MOSFET placed between its output and its input. The MOSFET switches the output when the sense signal, which is generated directly from the output, becomes lower than the programmed voltage. The internal oscillator clock then controls the MOSFET turning off and on, which in turn increases or decreases the inductor current. This oscillation creates the regulated output.

AOZ1052PI also has logic level dimming control input with SCH (Smart Control House) to maintain an (>90%) efficient operation even over light load conditions. It features a proprietary active Burst Mode operation that can reduce current consumption by up to 95%. Its intelligent over-temperature protection circuit limits the system to a safe temperature.

Additionally, the device offers temperature-compensated precision Voltage Reference (VREF) optimized for fast transient response, as well as ‘Soft-start’ and ‘Soft-stop’ to minimize inrush current. The AOZ1052PI also features programmable undervoltage lockout, overload protection and a 1.8V error amplifier supply for external error signal.

In summary, the AOZ1052PI is a high performance DC to DC switching voltage regulator with PMIC functionality, enabling efficient and reliable operation in space constrained applications. Its range of protection and control features, combined with its wide voltage range and wide temperature range, offer a cost-effective solution for applications that require power distribution and regulation.

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