MAX8867EZK50+T

Current - Output:	150mA
Base Part Number:	MAX8867
Supplier Device Package:	TSOT-23-5
Package / Case:	SOT-23-5 Thin, TSOT-23-5
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
Series:	--
Voltage Dropout (Max):	0.165V @ 150mA (Typ)
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	5V
Voltage - Input (Max):	6.5V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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MAX8867EZK50+T Application Field and Working Principle

The MAX8867EZK50+T is a three-terminal linear voltage regulator from Maxim Integrated, a leader in the power management industry. The device is classified as a PMIC (Power Management integrated Circuit) Voltage Regulator, and a Linear Voltage Regulator specifically.The MAX8867EZK50+T is best suited for low standby current/low voltage, low quiescent current applications in which battery-powered, portable electronic devices require low power, or in which an ultra-stable voltage reference is needed. Its key features include low dropout voltage, low quiescent current, fast-transient response, excellent line/load regulation, and low output noise.In terms of applications, the MAX8867EZK50+T is designed primarily for single-cell Li-ion/Li-Polymer (Li-Po) battery-powered applications such as notebooks, PDAs, and media players. It is also suitable for 5V and 3.3V input voltage applications such as personal medical devices and set-top boxes.The MAX8867EZK50+T operates with an input voltage range of 2.5V to 6V with a maximum output voltage of 3.3V ±10%. It is capable of supplying up to 500mA of output current. The device\'s maximum startup time varies depending upon the input voltage and is typically much lower than 2ms. The device is guaranteed to be stable with an output capacitance of 2.2 μF or greater.The MAX8867EZK50+T’s working principle is based on a linear regulator. It works by rectifying the AC component of the input voltage and then passing the resulting DC voltage through a low-frequency pass filter. The DC voltage is then passed into what is commonly known as a “transistor-to-ground” configuration where it is compared to a reference voltage created by a built-in voltage reference circuit.The reference voltage is then used to limit the output voltage to the desired value. When the output voltage needs to be reduced, the transistor is turned off and the filtered DC voltage correlates to the output voltage. When the output voltage needs to be increased, the transistor is turned on and the filtered DC voltage corelates to a higher output voltage.In conclusion, the MAX8867EZK50+T is an ideal solution for low standby current/low voltage, low quiescent current applications in which battery-powered, portable electronic devices require low power, or in which an ultra-stable voltage reference is needed. Its working principle is based on a linear regulator, which enables it to effectively provide a fixed output voltage regardless of load variations in the system.

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