MP2148GQD-Z

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The MP2148GQD-Z is a high-performance, high-efficiency, DC to DC buck switching regulator with low quiescent current and small form factor. This device is capable of providing 3A of continuous load current, and is ideal for powering low-power and ultra-low-power applications. It features a low quiescent current of only 40µA, an adjustable 2.7V to 5.5V output voltage, and excellent line and load regulation. The output voltage is adjustable through an external resistor divider.

The MP2148GQD-Z uses Pulse Width Modulation (PWM) to ensure smooth and stable operation across a wide range of input and output voltages. To provide high efficiency, it utilizes advanced synchronous rectification techniques, as well as a low-ripple, high-effective switching frequency control. The output is protected against short circuit, overcurrent, and thermal shutdown.

The MP2148GQD-Z is ideal for battery-powered, energy-sensitive applications such as smartphones, tablets, and wearable devices. It provides a reliable, low-noise power solution with high efficiency and good load regulation. It also features power savings mode, which reduces the supply current to lower than 15uA when the output is disabled. The device is available in an 8-Pin, 1.10mm x 1.10mm ChipScale package with an operating temperature range of -40 degrees C to +85 degrees C.

Features and Benefits

• High-performance, high-efficiency, DC to DC buck switching regulator
• 3A continuous load current capability
• 2.7V to 5.5V adjustable output voltage
• Low quiescent current of only 40uA
• Pulse width modulation (PWM) to ensure smooth and stable operation
• Advanced synchronous rectification techniques for high efficiency
• Low-ripple, high-effective switching frequency control
• Output is protected against short circuit, overcurrent, and thermal shutdown
• Features power savings mode
• Available in 8-Pin, 1.10mm x 1.10mm ChipScale package
• Operating temperature range of -40 degrees Celsius to +85 degrees Celsius

Applications

• Smartphones
• Tablets
• Wearable devices
• Low-power, energy-sensitive applications
• Power management systems

Working Principle

The MP2148GQD-Z utilizes a buck topology to convert a DC input voltage to a lower DC output voltage. The input voltage is applied to the buck switching regulator through an inductor. The output is regulated by pulse-width modulating (PWM) the switch connected to the inductor. When the switch is open, the energy stored in the inductor is released in pulses and is used to create a steady output voltage.

The higher the duty cycle of the output, the higher the output voltage is. The switching frequency of the synchronous buck converter, which is the frequency of the pulses, is adjustable through an external resistor divider. Higher switching frequencies lead to higher efficiencies. The MP2148GQD-Z also utilizes synchronous rectification that uses a low-loss diode to reduce the power loss associated with the conduction of current through the output diode.

The MP2148GQD-Z also utilizes advanced protection features such as over-current protection and thermal shutdown to further enhance its performance and reliability. The MP2148GQD-Z also has a power savings mode, which reduces the supply current to less than 15uA when the output is disabled.

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