MAX5035CUPA+

Voltage - Output (Min/Fixed):	12V
Base Part Number:	MAX5035
Supplier Device Package:	8-PDIP
Package / Case:	8-DIP (0.300", 7.62mm)
Mounting Type:	Through Hole
Operating Temperature:	0°C ~ 85°C (TA)
Synchronous Rectifier:	No
Frequency - Switching:	125kHz
Current - Output:	1A
Voltage - Output (Max):	--
Series:	--
Voltage - Input (Max):	76V
Voltage - Input (Min):	7.5V
Number of Outputs:	1
Output Type:	Fixed
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Not For New Designs
Packaging:	Tube

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Introduction

MAX5035CUPA+ is a low-voltage, high-efficiency and low-noise DC-DC switching regulator which can be used in various applications such as mobile phones, industrial equipment, notebook computers, PDAs and other portable device. The device is a step-up regulator that can be used to convert target voltages as high as 5V from an input voltage as low as 1.2V.

Features

The MAX5035CUPA+ features a broad range of features, including integrated inductance to significantly reduce potential external components and high power density. It also has low quiescent current and can quickly adjust its output voltage as loads change. Some of its key features include:

• High efficiency of up to 95%
• Integrated inductance reduces board space and component cost
• High power density
• Low quiescent current
• Fast transient response

Application Fields

The MAX5035CUPA+ is suitable for a variety of applications such as mobile phones, industrial equipment, notebook computers, PDAs and other portable device. It is ideal for current-limiting applications, generating high output voltages and delivering greater than *A of output current.The MAX5035CUPA+ is also highly suitable for powering low-noise applications, such as sensitive audio and automotive systems, which require the highest level of electrical performance.

Working principle

The MAX5035CUPA+ is step-up DC-DC switching regulator which works on the principle of switching. It has an input voltage which is greater than the output voltage and it converts the voltage by generating a series of high-frequency pulses, which are fed to the output stage. These signals maintain the desired output voltage while providing very low noise output due to the high frequency operation.The output stage includes an inductor, a switch, and an output filter capacitor. The inductor stores and supplies the necessary energy during the on-time of the switching operation, while the filter capacitor smoothens out the output voltage to provide a steady voltage.

Advantages of DC-DC Switching Regulators

• High efficiency
• Lower component cost
• Low power dissipation
• Smaller size due to high frequency operation
• High power density
• Good load and line regulation
• Sharp and complete control of the output voltage
• Low noise output
• High speed transient response

Application Example

The MAX5035CUPA+ can be used to convert target voltages as high as 5V from an input voltage as low as 1.2V. This can be done by connecting the MAX5035CUPA+ in a step-up configuration on a PCB with the components as shown in the diagram below.

Table Summary

Features	Benefits
High efficiency of up to 95%	Reduce power dissipation and operating cost
Integrated inductance reduces board space and component cost	Lower component cost and smaller board size
High power density	More power in less space
Low quiescent current	Reduce power dissipation
Fast transient response	Transient needs quickly met

Conclusion

The MAX5035CUPA+ is a low-voltage, high-efficiency and low-noise DC-DC switching regulator which can be used in various applications such as mobile phones, industrial equipment, notebook computers, PDAs and other portable device. The device is a step-up regulator that can be used to convert target voltages as high as 5V from an input voltage as low as 1.2V. It can benefit users by providing high efficiency, small board size, high power density, low quiescent current and fast transient response.

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