MAX8867EUK28+T

Voltage Dropout (Max):	0.165V @ 150mA (Typ)
Supplier Device Package:	SOT-23-5
Package / Case:	SC-74A, SOT-753
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C
Protection Features:	Over Current, Over Temperature, Reverse Polarity, Short Circuit
Control Features:	Enable
PSRR:	--
Current - Quiescent (Iq):	180µA
Current - Output:	150mA
Series:	--
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	2.8V
Voltage - Input (Max):	6.5V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Strip

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Introduction

The MAX8867EUK28+T is a low-offset +1% accurate low-dropout linear regulator for use in a wide variety of applications. With a maximum input voltage rating of 18V, the MAX8867EUK28+T offers a wide range of output voltage options from 3V to 11V, enabling it to meet the needs of many applications. It also features a low quiescent current, making it suitable for battery-powered systems. In addition, the MAX8867EUK28+T provides overvoltage protection (OVP) for the output voltage and includes a thermal protection circuit for greater overall system reliability.

Application Field

The MAX8867EUK28+T is ideal for applications such as automotive, handheld electronics, LEDs and LCD displays, industrial instrumentation, and more. Its high power conversion efficiency makes it suitable for energy-limited systems, and its low noise performance ensures a clean and stable output.The MAX8867EUK28+T can also be used in high-backed applications as it integrates slew-rate control circuitry and dynamic voltage positioning (DVP) for improved transient load response. Its external synchronization capabilities make it suitable for use in systems where the noise generated by the regulator needs to be kept to a minimum.

Working Principle

The basic working principle of the MAX8867EUK28+T is simple. When power is supplied, the voltage regulator monitors an internal feedback voltage, which is derived from the output voltage. When the feedback voltage fails to match the reference voltage, the regulator adjusts the output voltage accordingly. This control mechanism is utilized to keep the output voltage tightly regulated and in line with the desired value.The MAX8867EUK28+T also employs a voltage sensing element to detect the drop in output voltage when the load current increases. The regulator then adjusts the output voltage, based on the detected drop in voltage, to prevent the output voltage from exceeding the set threshold.

Over-Voltage Protection

In addition, the MAX8867EUK28+T includes an over-voltage protection (OVP) circuit, which is used to prevent excessive voltage from damaging the regulator. The OVP circuit detects when the output voltage is higher than the set threshold and engages a protection mode, which shuts down the output. The over-voltage protection is adjustable from 4.6V to 15V and is designed to provide ample protection against excessive voltage.

Conclusion

In conclusion, the MAX8867EUK28+T is a highly reliable low-dropout linear regulator that is suitable for a wide range of applications. With its wide input voltage range, high power conversion efficiency, low quiescent current, and adjustable over-voltage protection, the MAX8867EUK28+T provides designers with the features they need to ensure reliable and accurate voltage regulation.

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