MAX642ACSA+

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:	Tube

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MAX642ACSA+ Overview

The MAX642ACSA+ is a low-noise, low-quiescent-current, low-dropout linear regulator. The device has a flexible operating power range, plus protection features that make it suitable for a range of applications, such as portable electronics, battery-powered systems, automotive electronics, and industrial and consumer products.

Application Fields

The MAX642ACSA+ can be widely applied in the following fields:

• Automotive electronic systems
• Industrial electronics
• Consumer electronics
• Portable electronics
• Battery-powered systems

The MAX642ACSA+ is designed to operate from a single +2.7 V to +6.5 V voltage input range, and provide an output voltage from +1.15 V to +5.5 V. The device is ideal for powering CPUs, ASICs, DSPs, FPGAs and memory in low-noise and low-power applications.

Working Principle

The MAX642ACSA+ operates in linear regulator mode as a buck-boost converter, which means that both the input voltage and the output voltage can be either higher or lower than the regulated output voltage. This voltage-mode topology improves efficiency while allowing a greater input voltage range. Additionally, the device contains an error amplifier and a comparator. The error amplifier compares the output voltage of the device with an externally-applied reference voltage, and based on the result, the device adjusts its output voltage to match the externally-applied reference voltage.The device also contains a low-dropout feature which helps to improve the device’s overall efficiency and reduce output voltage ripple. This feature helps the device monitor the output voltage to prevent it from dropping below the setpoint and keeps the output voltage as close as possible to the setpoint.

Conclusion

The MAX642ACSA+ is a low-noise, low-dropout linear regulator designed for a variety of applications, including automotive electronics, industrial electronics, consumer electronics, portable electronics, and battery-powered systems. Its voltage-mode buck-boost topology allows a wider input voltage range, while also providing efficient power conversion and noise reduction. Additionally, the device\'s low-dropout feature helps to improve the device\'s overall efficiency and reduce output voltage ripple.

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