MAX1685EEE+

Voltage - Output (Min/Fixed):	1.25V (3.3V)
Base Part Number:	MAX1685
Supplier Device Package:	16-QSOP
Package / Case:	16-SSOP (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Synchronous Rectifier:	Yes
Frequency - Switching:	600kHz
Current - Output:	1A
Voltage - Output (Max):	14V
Series:	--
Voltage - Input (Max):	14V
Voltage - Input (Min):	2.7V
Number of Outputs:	1
Output Type:	Adjustable (Fixed)
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Active
Packaging:	Tube

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Introduction

MAX1685EEE+ is a Switching Regulator from PMIC - Voltage Regulators - DC DC switching Regulators Series. The main focus of Switching regulators are to transform the output voltage from its input voltage with high efficiency, that makes it simple and can be easily adjusted. Previously, fixing the output voltage and not efficient were two major issues, so switching regulator is designed to solve those issues. MAX1685EEE+ is designed to provide a high efficiency output power from 3V to 5.5V and a low quiescent current consumption (400uA).

Details of MAX1685EEE+

MAX1685EEE+ is a type of switch mode DC-DC regulator, mainly used to provide a steady output voltage over input voltage fluctuations. This product is an adjustable switching regulator, enabling users to adjust output voltages between 2.5V to 5.5V. MAX1685EEE+ offers a higher efficiency than other similar products as well as an advanced protection features.This product features a 15.75V supply voltage, a 2A maximum output current, a 0.4A standby current, a 4.5V to 5.5V input voltage range and a 4MHz switching frequency. It incorporates a high efficiency PWM architecture and advanced output current flexibility. It also  provides the ability to use components with low cost and small external component footprint.

Protection Features

MAX1685EEE+ product provides additional protection features along with its standard feature set. It provides over temperature protection for its input and output, overvoltage protection for output voltage and current limit protection for its output current. It also provides additional features like adjustable soft start, output current monitoring and output voltage monitoring. Moreover, it provides low noise operation and superior load transient accuracy due to its advanced excursion control features.

Applications of MAX1685EEE+

MAX1685EEE+ product comes with many features, making it suitable for various applications. It can be used in various laptop and desktop computer motherboards as a power supply. It can also be used as a power supply to various other electronic and electrical products. Its over-temperature protection makes it a suitable choice for industrial testing and medical applications. Apart from its standard applications, MAX1685EEE+ can also be used in many RF applications due to its wide range of voltage outputs, adjustable current protection and adjustable soft start times. This product can also be used for providing power for analog and digital circuitry, as well as high switching power, low quiescent current and adjustable output current limits.

Working Principle of MAX1685EEE+

MAX1685EEE+ DC-DC Switching Regulator is based on pulse width modulation (PWM) technology. In this technique, an on-board pulse generator generates a high and low pulse, switching the output voltage between the two states. The frequency of the pulses is controlled by a clock according to the desired output voltage. The output voltage is then regulated by a feedback loop and can be adjusted by changing the clock frequency.The output voltage of the MAX1685EEE+ is regulated between 2.5V to 5.5V, with a maximum output current of 2A. The input voltage can range from 4.5 V to 5.5V. This product provides an efficient system which can provide high output current and high efficiency from its sources. It also provides an adjustable current limit which can prevent overloading and help in increasing the system reliability.

Conclusion

MAX1685EEE+ is a switching regulator from PMIC - Voltage Regulators - DC DC Switching Regulators Series, which provides efficient operation with various features and protection features. It can provide adjustable voltages between 2.5V to 5.5V and the input voltage source range is from 4.5V to 5.5V. It features a 15.75V maximum supply voltage, 2A maximum output current, 0.4A standby current, 4MHz switching frequency, over temperature protection (input and output), overvoltage protection and adjustable current limit protection. MAX1685EEE+ is suitable for numerous applications including computer motherboards, industrial testing, medical equipment, and analog and RF circuitry. It can provide a steady output voltage and an adjustable output current limit which helps to increase system reliability.

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