MPQ2918GL-AEC1-P

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PMIC, or Power Management Integrated Circuit, can be essentially divided into Voltage regulators, DC DC switching regulators, linear regulators and battery management. Voltage regulators are somewhat specialized ICs which typically have a single output voltage, but can provide additional characteristics for added protection such as current or wattage limitation or monitoring. DC DC switching regulators are specialized integrated circuits designed to efficiently convert DC power from one voltage to another.

MPQ2918GL-AEC1-P is a DC DC switching regulator which is used to convert a 4.5V-15V input to an adjustable output voltage range of 0.8V to 12V with high efficiency. It is a 3-terminal, adaptive-constant-on-time (ACT) device, providing high quality and reliable power regulation in a wide range of power supply applications. The integrated maximum current protection circuit, ON/OFF control, enable pin and ac/dc analysis pin provides a robust solution for power management.

Its primary application fields include powering previous-generation mobile phones, PDAs and notebook computers. With a wide operating temperature range from -40℃ to +125℃, it is suitable for most portable and non-portable applications such as data storage, portable electronics and entertainment centers.

The operating principle of MPQ2918GL-AEC1-P involves a high-frequency fixed-frequency current source architecture. The digital current source architecture incorporates a feedback loop which regulates the current of the output. The fixed-frequency current source drives a high-frequency oscillator to produce a switching frequency independent of the input voltage to maintain a high efficiency. The current mode control ensures fast output voltage regulation by keeping the inductor current relatively constant regardless of the input voltage.

The adaptive constant-on-time control restricts the minimum duty cycle of the power MOSFET switch and optimizes the output voltage ripple while ensuring safe operation over all input voltage ranges. The integrated load current limit protection senses the voltage drop across the MOSFET and shuts off the regulator in case of excessive current, eliminating the need for an external sense resistor and improving efficiency.

The MPQ2918GL-AEC1-P has a set of features designed to provide over-voltage protection and current limiting. The OVP detects the input or output voltage and initiates a software shut down if the voltage is outside a predefined value. This prevents damage to sensitive components from excessive voltage. The current limit sets a maximum current that the regulator will supply to the load, preventing damage to internal components in case of an overload.

The MPQ2918GL-AEC1-P is an efficient and reliable DC DC switching regulator, suitable for a wide range of power supply applications. It features adaptive constant-on-time control, high-frequency fixed-frequency current source architecture and integrated maximum current limit protection which make it a robust device that delivers high-quality, safe and reliable power regulation.

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