MP3423GG-Z Integrated Circuits (ICs)

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The MP3423GG-Z is a highly integrated DCDC switching regulator IC specifically designed for low input voltage, medium voltage output applications, providing high efficiency and high power density with minimal external component count. The key features of the MP3423GG-Z are as follows:

• 40V input voltage range
• 4.5V to 24V output range up to 2A
• Current mode or voltage mode control
• 85% efficiency
• High power density
• Programmable soft-start
• Programmable loop compensation
• Programmable output voltage
• High current MOSFET output
• Under voltage/over voltage protection
• Over current and temperature protection

The MP3423GG-Z is a step-down DCDC switcher integrated circuit that operates by converting a DC input voltage to a regulated constant output voltage. It is based on a current-mode PWM control architecture, which allows it to deliver very high peak current with low output ripple. The device is designed to switch from the high side, using a single supply, and it utilizes a pair of power MOSFETs. The high side MOSFET, operates with an active peak current control technique and the low side MOSFET uses a passive resistor to limit the peak current. The current sense limit is adjustable, and the output voltage is adjustable in the range of 4.5V to 24V with one external resistor.

The MP3423GG-Z has a wide range of application fields, particularly in the automotive, industrial, communication and consumer electronics markets. It can be used as car battery power in automotive systems, where its high precision, low noise and high efficiency are highly valued. It can also be used in various industrial systems such as servers, routers, access points, and switches, as well as in consumer electronics like tablet PCs and game consoles. In addition, the IC can be used in communication systems like mobile phones, and alarm systems, and in battery powered appliances.

The working principle of the MP3423GG-Z is simple. When the power is initially applied, the device senses the input voltage and then turns on the high side MOSFET. As the gate of the high side MOSFET rises, the drain current of the MOSFET also increases, until the current sense limit is reached. At this point, the duty cycle of the MOSFET is reduced, preventing the current from exceeding the preset level. The device also features a soft start circuit, which prevents the output voltage from rising too quickly when power is initially applied. Once the output voltage reaches the preset level, the output regulation is provided by the DCDC controller loop.

The MP3423GG-Z is specifically designed to meet the demand of high efficiency, low current ripple and minimal external component count for DC/DC switching regulators. It is a highly integrated IC that achieves a high degree of accuracy, stability, and high efficiency. It is highly reliable, provides a reliable supply for applications such as automotive, industrial, communication and consumer electronic markets.

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