MAX5073ETI+T

Voltage - Output (Min/Fixed):	0.8V
Base Part Number:	MAX5073
Supplier Device Package:	28-TQFN (5x5)
Package / Case:	28-WFQFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Synchronous Rectifier:	No
Frequency - Switching:	200kHz ~ 2.2MHz
Current - Output:	1.38A (Switch), 2.3A (Switch)
Voltage - Output (Max):	28V
Series:	--
Voltage - Input (Max):	23V
Voltage - Input (Min):	4.5V
Number of Outputs:	2
Output Type:	Adjustable
Topology:	Buck, Boost
Output Configuration:	Positive
Function:	Step-Up, Step-Down
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction to MAX5073ETI+T

MAX5073ETI+T is a 3-V to 24-V step-down dc-dc switching regulator for use in consumer and industrial applications. The device includes a high-efficiency power MOSFET switch, a precision voltage reference, and a high-speed voltage comparator with hysteresis, all of which are integrated in a single package. It offers fast transient response, and provides a low-noise switching frequency of 300 kHz.

Application field of MAX5073ETI+T

The MAX5073ETI+T can be used to provide a regulated output voltage suitable for a variety of consumer, industrial, and communication applications. It is particularly useful for applications that require a wide differential input voltage such as automotive and industrial power-supply designs. It also finds applications in telecom and server systems, as well as battery operated portable devices such as cell phones, digital cameras, and PDAs.

Working Principle of MAX5073ETI+T

The MAX5073ETI+T is a step-down switching regulator which works by switching a MOSFET on or off for a given duration according to a specific control signal. The MOSFET switches a current from the input voltage source to the coil in the inductor, storing energy in the form of a magnetic or a mechanical field of force. Then, when the switch is turned off, the stored energy is released into the load. This is the basic principle of a switching regulator. The MAX5073ETI+T consists of three major components: a high-efficiency power MOSFET switch, a precision voltage reference, and a high-speed voltage comparator with hysteresis. It also features internal overcurrent protection, short-circuit protection, and thermal shutdown protection. The MAX5073ETI+T operates in a pulse-width modulation (PWM) mode, which is controlled by the voltage comparator. The comparator compares the output voltage with the reference voltage, and produces a proportional PWM output signal to control the duration of the switch on time (or pulse width).

Conclusion

The MAX5073ETI+T is a 3-V to 24-V step-down dc-dc switching regulator for use in a variety of consumer, industrial, and communication applications. It offers a fast transient response, an adjustable output voltage, and an internal power MOSFET switch. It also provides a high-speed voltage comparator with hysteresis and a precision voltage reference, as well as integrated protection features. The MAX5073ETI+T enables designers to create power-supply designs for a wide range of consumer, industrial, and communication applications.

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