MAX642ACSA+T

Voltage - Output (Min/Fixed):	1.31V (12V)
Base Part Number:	MAX642
Supplier Device Package:	8-SOIC
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	0°C ~ 70°C (TA)
Synchronous Rectifier:	No
Frequency - Switching:	50kHz
Current - Output:	450mA (Switch)
Voltage - Output (Max):	18V (Switch)
Series:	--
Voltage - Input (Max):	16.5V
Voltage - Input (Min):	2V
Number of Outputs:	1
Output Type:	Adjustable (Fixed)
Topology:	Boost
Output Configuration:	Positive
Function:	Step-Up
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

The MAX642ACSA+T is a DC-DC switching regulator. It is designed to regulate a voltage to the desired level. The MAX642ACSA+T is designed to step up, step down, and convert between a range of input voltages. This makes it an ideal choice for a wide range of applications.

Application Field

The MAX642ACSA+T has a wide range of applications. It is used in devices with a need for high conversion efficiency and low output noise, such as medical devices, portable electronics, battery charging, and more. It can also be used for providing isolated power for signal conditions and conversion between signal levels. Additionally, it is ideal for regulating the voltages needed in DC-DC converters, such as those used in automotive and industrial applications.

Features

The MAX642ACSA+T has a variety of features that make it suitable for a wide range of applications. It has an operating range of 2.7V to 15V, an internal switch capability of 500mA, and a wide voltage output range of 0.8V to 10V. It also features a precision 2% accuracy output voltage over temperature, low current startup, and low quiescent current of 250uA. The device is also short-circuit protected and offers a thermal shutdown circuit that prevents the device from over-heating.

Working Principle

The MAX642ACSA+T works by controlling the input voltage to create the desired output voltage. This is done by switching the power on and off in a high frequency square wave. The input voltage is compared to the output voltage using an error amplifier and the control signal is sent back to the power switch to adjust the voltage. The frequency of the square wave is determined by the output voltage, while the duty cycle is determined by the difference between the input voltage and the output voltage. This results in a constant output voltage.

Conclusion

The MAX642ACSA+T is a DC-DC switching regulator designed to regulate a voltage to the desired level. It is ideal for applications such as medical devices, portable electronics, and battery charging, and is suitable for providing regulated power for automotive and industrial applications. Its internal switch capability, low current startup, and low quiescent current make it a great choice for these applications. The working principle of the device is based on controlling the input voltage with a high frequency square wave to adjust the output voltage.

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