MAX743CWE+T

Voltage - Output (Min/Fixed):	±12V, ±15V
Base Part Number:	MAX743
Supplier Device Package:	16-SOIC
Package / Case:	16-SOIC (0.295", 7.50mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	0°C ~ 70°C (TA)
Synchronous Rectifier:	No
Frequency - Switching:	200kHz
Current - Output:	2A (Switch)
Voltage - Output (Max):	--
Series:	--
Voltage - Input (Max):	6V
Voltage - Input (Min):	4.2V
Number of Outputs:	2
Output Type:	Programmable
Topology:	Boost, Buck-Boost
Output Configuration:	Positive and Negative (Dual Rail)
Function:	Step-Up
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

A MAX743CWE+T is a type of DC-DC switching regulator, commonly referred to as a PMIC or Power Management IC. This voltage regulator is designed to convert a DC input voltage within a certain range to a stable DC output voltage, within a certain range, in order to provide reliable, efficient power to a variety of applications. It achieves this by using a conversion technique whereby it switches between two given voltages at a set frequency, then regulates the output voltage by varying the duty cycle of the switching cycles.

Design Principles

Unlike linear voltage regulators, a MAX743CWE+T relies on two power transistors, operating in a ‘switching’ mode which enables it to rapidly switch between two different input voltages at a set frequency. This switching action creates a ‘flyback’ period, when the input voltage is reduced, followed by a ‘regulation period’ where the output voltage is stabilized by varying the duty cycle of the transistor. This technique allows the MAX743CWE+T to both reduce power losses and improve the efficiency of the power supply.The MAX743CWE+T is designed to work with a variety of input and output voltages. The MAX743CWE+T can accommodate 5V to 16V input voltages, with an output voltage range from 0.8V to 16V, allowing for a wide range of power supplies to be designed for a variety of applications. The MAX743CWE+T can also provide up to 2A of continuous current.

Components

The MAX743CWE+T is a complete switching regulator IC and does not require any additional components for its operation. The components included in the device are two power transistors, two flyback diodes, two switching transistors (MOSFETs) and an output voltage regulator. The transistors are used to rapidly switch between different input voltages while the diodes act as rectifiers and protect the power supply from short circuits. The MOSFETs ensure that the output voltage remains within the set range and the output voltage regulator provides the necessary control over the output voltage.

Application Fields

The MAX743CWE+T is a versatile switching regulator that can be used in a variety of applications. It is commonly used in automotive systems, including car interior lighting, door locks, and audio systems. It is also used in a variety of consumer electronics, such as cell phones, PDAs and digital cameras. Additionally, it is often used in power supplies for industrial and electronic medical equipment.

Conclusion

The MAX743CWE+T is a versatile and efficient DC-DC switching regulator. It is designed to convert a DC input voltage within a certain range to a stable DC output voltage, allowing for a wide range of power supplies to be designed for a variety of applications. It is commonly used in automotive systems, consumer electronics, and power supplies for industrial and medical equipment, and works by rapidly switching between two given voltages and regulating the output voltage by varying the duty cycle of the transistor.

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