Frequency - Switching:	262kHz
Base Part Number:	MAX5022
Supplier Device Package:	8-uMAX
Package / Case:	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Operating Temperature:	-40°C ~ 85°C (TA)
Control Features:	--
Serial Interfaces:	--
Clock Sync:	No
Synchronous Rectifier:	No
Duty Cycle (Max):	75%
Series:	--
Voltage - Supply (Vcc/Vdd):	11 V ~ 28 V
Output Phases:	1
Number of Outputs:	1
Topology:	Flyback, Forward Converter
Output Configuration:	Positive, Isolation Capable
Function:	Step-Up/Step-Down
Output Type:	Transistor Driver
Part Status:	Active
Packaging:	Tube

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Introduction

MAX5022EUA+ is an adjustable, switching step-down DC-DC controller from the power management integrated circuits (PMIC). With adjustable output voltage and operating frequency, this voltage regulator provides high-performance power solutions and advanced features such as 1.25V to 37V input voltage range. When connected with an external power MOSFET, the MAX5022EUA+ effectively meets a wide range of voltage output and current requirements, making it suitable for a variety of applications. Apart from these features, MAX5022EUA+ alsohas a very efficient voltage conversion process that uses an adaptive on-time technique that optimizes the efficiency and reduces chaotic switching.

Application Field

MAX5022EUA+ has several common applications, such as being used to provide a wide variety of voltage levels for cell phones, remote control devices, computers, and other consumer electronics. Thanks to its adjustable output voltage, it is also frequently used for power supplies, monitor power, anti-lock brakes, auto dimming and automatic garage door openers. The wide range of voltage inputs, adjustable output voltage and operating frequency make the MAX5022EUA+ one of the most commonly used switching step-down DC-DC controllers available.

Working Principle

The MAX5022EUA+ is an adjustable, low voltage, switching step-down DC-DC controller. It utilizes a buck topology and works by converting a higher voltage to a lower voltage level while maintaining high efficiency. It is capable of converting a 1.25V to 37V input voltage to an output voltage anywhere from 0.8V to fewer than the input voltage. The MAX5022EUA+ utilizes an adjustable on-time technique that allows the regulator to adapt to fluctuating load conditions and maintain its output regulation over the entire operating range. It operates at a fixed oscillator frequency of 500kHz and can be adjusted to over 4MHz using an external resistor. This allows the converter to provide a very steady output voltage even in the presence of a varying input voltage and load. The MAX5022EUA+ also provides a high efficiency by turning off the converter when the output voltage reaches the setpoint and by allowing the current to flow into the output capacitance instead of the internal switching device when the output voltage is lower than the setpoint. This ensures low switch node ringing and a low EMI profile. Overall, The MAX5022EUA+ provides versatile, high-efficiency and high performance voltage regulation.

Conclusion

The MAX5022EUA+ is a versatile, high-performance switching step-down DC-DC controller. It offers adjustable output voltage and operating frequency, making it suitable for a wide variety of applications. Its adaptive on-time technique optimizes efficiency, provides high stability over a wide range of input voltage and load conditions and provides low EMI. It is designed for use with an external power MOSFET and can regulate an input voltage from 1.25V to 37V down to any output voltage lower than that. In conclusion, the MAX5022EUA+ provides an ideal solution for voltage regulation in applications ranging from consumer electronics to automotive systems.

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