MP4420AGJ-P

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The MP4420AGJ-P DC/DC converter from Diodes Incorporated is a highly efficient synchronous step-down voltage regulator for applications needing up to 3.8A output currents. It is an ideal choice for general purpose applications, such as personal computers, mobile/cellular phones, personal digital assistance (PDA), portable equipments, high power gaming, server, and network throughput applications, among others. It uses a constant on-time control scheme to achieve very fast transient response and accurate output voltage regulation. It contains an integrated high-side MOSFET and low-side MOSFET to provide a complete power management solution. The MP4420AGJ-P has a fixed output voltage of 3.3V and can deliver up to 3.8A of steady-state output current with excellent line and load regulation.

The chip integrates other features such as over-voltage, over-current and thermal protection as well as ultra-low-noise operation. In addition to its synchronous step-down operation, the MP4420AGJ-P also features a burst-mode operation for improved efficiency at light loads. It operates from an input voltage of 2.5V to 6.5V, supports an adjustable output voltage from 0.6V to 5.5V and is available in a 3.0 mm x 3.0 mm 20-pin DFN package.

The MP4420AGJ-P is designed to reduce the current level through its integrated high-side and low-side MOSFETs. In steady-state, current is fed from the input voltage source to the gate terminal of the integrated high-side MOSFET, and from the gate terminal of the integrated low-side MOSFET to the load. The output voltage is then determined by a feedback loop, where the output voltage is compared to an internal reference voltage. As the load current changes, the output voltage is adjusted through the on-time adjustment of the integrated MOSFETs.

The chip also has an adjustable soft-start feature, which is used to reduce inrush currents, improve load the noise margin, and limit start-up currents. The chip is capable of delivering a wide range of output voltages, from 0.6V to 5.5V, allowing it to be used in a wide variety of applications. Additionally, the chip operates over a wide input voltage range, from 2.5V to 6.5V.

The MP4420AGJ-P is capable of operating at very high efficiency, up to 96%, making it an ideal choice for applications that require low power consumption. The chip also has advanced short circuit protection and integrated UVLO (Under Voltage Lock Out) protection, which prevents it from running when the input voltage is too low.

Overall, the MP4420AGJ-P is an ideal choice for a wide range of applications needing up to 3.8A output current. It features a complete power management solution with its integrated high-side MOSFET and low-side MOSFET, and is supplied in a small 3.0 mm x 3.0 mm 20-pin DFN package. It operates from an input voltage of 2.5V to 6.5V and supports an adjustable output voltage from 0.6V to 5.5V. In addition, the chip has high efficiency, up to 96%, short circuit protection and integrated UVLO protection as well as adjustable soft-start feature.

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