MAX1544ETL+T

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MAX1544ETL+T is a special purpose voltage regulator produced by Maxim Integrated. It is a 3-terminal, low-cost, high–efficiency step-down regulator with a wide input voltage range and high current output. The regulator is designed to be used in various applications, such as switching power supplies, DCDC converters, point-of-load (POL) converters, and battery management systems. This article provides an overview of the device and its features, including its application field and working principle.

Applications

The MAX1544ETL+T is a 3-terminal monolithic buck regulator designed to deliver up to 1000mA of load current from an input voltage of up to 38V. The device operates from an input voltage range between 4.5V and 38V, making it suitable for a wide range of input voltages. The device regulates an output voltage of up to 28V, which makes it suitable for a wide range of applications. It is particularly suitable for those applications where high efficiency and low dropout are required, such as switching power supplies, DCDC converters, point-of-load (POL) converters, and battery management systems. Additionally, the device is suitable for applications that require operation from a wide range of input and output voltages, such as automotive systems and medical equipment.

Features

The MAX1544ETL+T is a highly efficient, low-dropout 3-terminal monolithic buck regulator. The device features a maximum output current of 1000mA and a wide input voltage range of up to 38V. The device is designed to have a very low quiescent current of less than 1mA, which makes it suitable for battery and power-sensitive applications. The device also features a low dropout voltage of 80mV and a high switching frequency of up to 2MHz. Additionally, the device includes built-in thermal shutdown, over-voltage, and over-current protections. The device also includes a shutdown logic pin which allows the device to be disabled when not in use. The device is available in a thermally enhanced 8-lead STQFN package.

Working principle

The MAX1554ETL+T is a switched-mode regulator, which means that the device uses pulse width modulation (PWM) to regulate the output voltage. The device consists of an input stage, an output stage, and a control stage. The input stage consists of an input capacitor, a switch transistor, and an inductor. The switch transistor is driven by the control stage and is used to regulate the input voltage. The output stage consists of an output capacitor, a diode, and an output inductor. The control stage uses a closed-loop feedback network to regulate the output voltage. The device also includes a shutdown logic pin, which can be used to set the device to a low-power, disabled state when not in use.

Conclusion

The MAX1544ETL+T is a low-cost, high–efficiency, monolithic buck regulator with a wide input voltage range and high current output. The device is designed to be used in various applications, such as switching power supplies, DCDC converters, point-of-load (POL) converters, and battery management systems. The device features a maximum output current of 1000mA and a wide input voltage range of up to 38V. The device is designed to have a very low quiescent current of less than 1mA, which makes it suitable for battery and power-sensitive applications. The device also features a low dropout voltage of 80mV and a high switching frequency of up to 2MHz. Additionally, the device includes built-in thermal shutdown, over-voltage, and over-current protections. The device operates using a switched-mode principle, using an input stage, a control stage, and an output stage. It is therefore suitable for a wide range of applications where high efficiency and low dropout are required.

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