AOZ1110QI

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AOZ1110QI is an advanced, high efficiency, synchronous step-down DC-DC converter. It is classified as a DC-DC switching regulator in the PMIC -- Voltage Regulators category. This DC-DC switches inductor current through two switches to generate regulated output voltage in proportion to the input voltage. It contains a high side N-MOSFET switch, a low side FET switch and an on-chip inactive switch for controlling switching power.

The AOZ1110QI can be used in a wide range of applications, from low power and portable systems to high power DC/DC converters up to 8A. It is a great choice for applications such as laptop computers, adapters, chargers, gaming consoles, power banks, and other consumer electronics products. It offers an industry-leading efficiency of up to 95%, a 160kHz TrueShutdown™ feature to reduce power consumption at light loads, and innovative high-voltage startup slew control. It supports input voltage range up to 20V, allowing applications on battery-powered systems, automotive and industrial applications.

Furthermore, this device features a wide range of protection including over temperature, over current, under voltage, over voltage and output over current protection. It also has an auto-restart mode to manage any faults condition and continue operating. Moreover, it has an excellent thermal performance due to its proprietary Qfn-14 package with heat-sink pad providing enhanced thermal performance and small footprint surface mount design to save board space.

In terms of working principle, the AOZ1110QI uses a synchronous rectification control scheme to control the output voltage. This is often referred to as a pulse width modulation (PWM) control type. It works by controlling the ratio between the on-time and total period of the pulse trains to determine the output voltage. A pulse width modulator (PWM) generates digital pulses of variable width according to a reference input signal. This signal is generated by a voltage reference, feedback loop and error amplifier, which are combined to produce the required output voltage.

The AOZ1110QI also has an innovative Pulse-Skip Mode, which skips pulses to reduce power consumption and reduce heat production. This feature also increases efficiency during light load conditions. It operates in either forced continuous or pulse-skip mode depending on the load condition. This mode reduces power consumption by skipping pulses at light loads, but it does not affect accuracy or stability.

In summary, the AOZ1110QI is a high efficiency DC-DC switching voltage regulator that offers a wide input voltage range from 2.5V to 20V, and 8A switching current at high speeds up to 160kHz. The device features comprehensive protection features, low power pulse-skip mode, and high thermal performance with small footprint. It is suitable for use in a variety of applications, such as portable systems, consumer electronics and automotive applications.

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