MPQ4458DQT-LF-Z

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

MPQ4458DQT-LF-Z is a DC-DC Switching Regulator in a Power Management Integrated Circuit (PMIC) – Voltage Regulators. This multi-function converter can provide both Step-Down and Step-Up capabilities with a minuscule 0.75x1.00mm QFN package. This multi-function converter also has features not seen in other regulators such as a two-phase input, low-voltage dropout and low-ringing buck operation, integrated gate drivers and high gate turn-on surge current, as well as offering short-circuit protection.

The specific MPQ4458DQT-LF-Z device is an ultra-small, ultra-low-voltage buck-boost DC-DC converter with a wide input voltage range from 0.7 V to 5.5 V. It integrates a high-side N-channel and a synchronous low-side P-channel MOSFET in its internal power stage and has a maximum output current of 400 mA in buck mode and 675 mA in boost mode. It offers excellent EMI/EMC performance and a wide operating temperature range from -40°C to +85°C.

The MPQ4458DQT-LF-Z\'s wide input voltage range is perfect for applications where the power source\'s voltage changes frequently, such as backup and portable power supplies. It also has the added benefit of being able to step up or step down the voltage according to the application\'s requirements. This makes it an ideal choice for consumer products, optical systems, and various other types of products. It is also suitable for automotive and industrial applications.

The operating principle of the MPQ4458DQT-LF-Z involves comparing the sensed output voltage to its internal reference voltage, then making adjustments to the internal power switches accordingly. The device is capable of switching between buck, boost and bypass modes, depending on the input and output voltage requirements. In buck mode, the input voltage is reduced to the desired output voltage. In boost mode, the output voltage is increased to the desired level. The device can also be used in bypass mode to maintain a constant voltage by bypassing the output voltage to the input voltage.

The MPQ4458DQT-LF-Z is designed to provide efficient, low noise and high accuracy power delivery with a wide range of protection features, including overvoltage, thermal shutdown and current limit. It also has an adjustable frequency for applications that need a low switching frequency, as well as integrated gate drivers for applications that require faster turn-on and/or turn-off times. The device also has a selectable bypass mode for maximum efficiency under light loads, and can be used in applications running from either a battery or an AC line.

In conclusion, the MPQ4458DQT-LF-Z is an ideal DC-DC Switching Regulator for applications requiring a wide input voltage range, low noise operation, integrated gate drivers and high gate turn-on surge current. It is suitable for both consumer and automotive applications, with its wide operating temperature range making it suitable for both indoor and outdoor use. Its protection features ensure reliable and robust operation and it has the added benefit of adjustable frequency, bypass mode and two-phase input capabilities.

The specific data is subject to PDF, and the above content is for reference