MAX5061EUE+

Frequency - Switching:	125kHz ~ 1.5MHz
Base Part Number:	MAX5061
Supplier Device Package:	16-TSSOP-EP
Package / Case:	16-TSSOP (0.173", 4.40mm Width) Exposed Pad
Operating Temperature:	-40°C ~ 85°C (TA)
Control Features:	Current Limit, Enable, Frequency Control, Power Good
Serial Interfaces:	--
Clock Sync:	Yes
Synchronous Rectifier:	Yes
Duty Cycle (Max):	--
Series:	--
Voltage - Supply (Vcc/Vdd):	4.75 V ~ 28 V
Output Phases:	1
Number of Outputs:	1
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Output Type:	Transistor Driver
Part Status:	Active
Packaging:	Tube

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MAX5061EUE+: Application Field and Working Principle

The MAX5061EUE+ is a DC-DC switching controller IC from the voltage regulator range of PMICs. This IC is suitable for applications like point-of-load (POL) converters and digital voltage regulation circuits that use wide input voltage and require precise regulation control. This article will discuss the application field and working principle of the MAX5061EUE.

Application Field

The MAX5061EUE+ is an ideal candidate for designing Point-of-Load (POL) converters. POL converters are used to provide isolated voltage levels for different components. This is useful in systems which operate at varying power levels, as the POL converter can supply different levels of power depending on the required load. This helps to save energy and reduce unnecessary power consumption.The MAX5061EUE+ is also suitable for applications where precise voltage regulation is needed. This includes digital voltage regulation circuits, which require precise control of the supply voltage. The MAX5061EUE+ has an adjustable precision of 0.6% which makes it suitable for such applications.

Working Principle

The MAX5061EUE+ works by controlling the switching of an external power FET through a pulse-width modulation (PWM) signal. This PWM signal is generated by the IC, using an external clock and Voltage Divider (Vdiv) input. The clock frequency is directly proportional to the output voltage. The Vdiv input is used to control the modulation of the output voltage, through a voltage-to-current pulling of the PWM regulation loop.The MAX5061EUE+ also features an optional synchronization input that can be used to synchronize the PWM signal with an external clock. This allows the IC to be used in synchronous converter designs as well.To further improve the accuracy of the output voltage, the MAX5061EUE+ also has an adjustable soft-start feature. This feature ensures that the output voltage ramps up gradually, avoiding sudden voltage spikes.The MAX5061EUE+ is capable of operating over a wide range of input voltages, between 4.5V to 60V. It also features overvoltage, undervoltage and short-circuit protection, adding reliability to the design.

Conclusion

The MAX5061EUE+ is a DC-DC switching controller IC from the voltage regulator range of PMICs. It is mainly used for applications like point-of-load converters and digital voltage regulation circuits. It works by controlling the switching of an external power FET through a PWM signal. The IC also features an adjustable soft-start feature, wide input voltage range, high accuracy and overvoltage, undervoltage and short-circuit protection.

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