MP6401DQT-18AD3-LF-Z Integrated Circuits (ICs)

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The MP6401DQT-18AD3-LF-Z is a Linear programmable voltage regulator PFM synchronous buck regulator with input voltage range of 3.3-18V and output voltage range of 0.6-15V. It is intended for mobile phone, tablet, and portable device applications. This Linear regulator provides excellent thermal performance and output current accuracy through both on-field and closed-loop adjustment. It also provides a wide operational mode range and output voltage accuracy in an ultra-low quiescent current, which for mobile and handheld applications requires extremely low power consumption.

The MP6401DQT-18AD3-LF-Z is equipped with switching control pins, the gain settings for both the internal transconductance amplifier and the output voltage loop are available, which simplifies the design of the application. Also, a programmable voltage output (down to 0.6V) is provided to suit a wide range of power applications. The adjustable switching frequency allows an optimised design and improved efficiency while driving a dense load. The device integrates several protections such as Over Current Protection (OCP), Over Temperature Protection (OTP) and UVLO and provides total system protection and stability in a wide output voltage range. The device features a low standby current operation, Precision Output Voltage and allows the output voltage to be programmed over temperature, achieving a long life cycle, with a high stability.

In the MP6401DQT-18AD3-LF-Z application field, it can be used in a wide range of applications such as Bluetooth and WiFi modules, displays and low voltage power supplies. Its applications lie in smart home management and home networking, industrial control systems, entertainment, healthcare and communication and other fields.

The working principle of the MP6401DQT-18AD3-LF-Z is based on the Continuous Conduction Mode (CCM) and the synchronization of external clock. During the switching cycle, the two FETs are turned on and off simultaneously, and the inductor current is constantly kept between 0mA and the maximum output current. The external control voltage is compared with the internal reference voltage to determine the output conduction time for each switch. The output voltage accuracy is ensured by a constant on-time mode and a proportional compensation from the internal error amplifier.

The MP6401DQT-18AD3-LF-Z is a cost-effective solution, which provides excellent thermal performance and output current accuracy throughout both on-field and closed-loop adjustment. The adjustable switching frequency and low standby current operation make it ideal for a wide range of applications in mobile and handheld devices. Finally, its synchronization of external clock and an adjustable output voltage with a wide range of power application make it a versatile, reliable and efficient voltage regulator.

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