MAX1703ESE

Introduction

The MAX1703ESE is an adjustable DC-DC synchronous switching regulator device. It is part of the family of voltage regulators with DC-DC switching regulators provided by Maxim Integrated and is capable of delivering up to 1.5A output current. The device operates from an input voltage range of 4.5V to 16V and has a very efficient power dissipation range, resulting in improved efficiency and long operating times without having to worry about heating. It can be used in applications ranging from personal electronics, automotive and industrial applications and can be used either as a standalone switching regulator or as part of a multi-chip power supply.

Application Field

The MAX1703ESE is a highly efficient switching regulator capable of providing an adjustable output voltage from 0.8V to 5.5V. The device utilizes a current-mode synchronous PWM scheme and advanced voltage loop techniques. It is optimized for high current applications including those found in automotive and industrial applications. Due to its operating temperature range, it can operate in harsh environments where the temperature can vary greatly.

This device utilizes a novel dual-mode operation architecture which allows the user to switch between Fixed-Frequency PWM and Burst-Mode™ PWM modes. This allows greater flexibility in tuning the device to optimize power savings in various loading conditions. The regulator is also designed with excellent load and line regulation. It can respond to a wide range of input and output vibrations without any significant effects.

The MAX1703ESE also features an adjustable internal soft-start capability designed to reduce inrush current during start-up. This is an essential feature in applications where the supply voltage varies greatly. The device also features thermal shutdown protection and overcurrent protection.

Working Principle

The MAX1703ESE switching regulator operates by taking an input voltage and converting it to a lower voltage to provide a regulated output voltage. This is achieved by switching the power supply on/off at a high frequency. The frequency of the switching can be controlled by setting a frequency or duty cycle value. The output voltage is monitored which allows the device to regulate the output voltage despite changes in the input voltage. This type of regulator requires minimal external components and is highly efficient.

The MAX1703ESE utilizes a synchronous PWM scheme and a buck topology to control the output voltage of the regulator. The output voltage is monitored continuously by an internal voltage loop circuit. The device is able to adjust its associated power stage in order to maintain the desired output voltage range. Additionally, the device is able to achieve a high level of efficiency due to its synchronous design and advanced power stage features.

The MAX1703ESE is designed to reduce the amount of ripple voltage present on the output. This is achieved by draining some energy from the output to the ground at each switching cycle. This generated noise is usually referred to as On-Time Noise (OTN). To minimize OTN, the device has an adjustable on-time filter which can be used to reduce the amount of OTN.

Conclusion

The MAX1703ESE is an adjustable DC-DC synchronous switching regulator device that is capable of providing an adjustable output voltage from 0.8V to 5.5V with up to 1.5A of output current. The device is suitable for automotive, personal electronics and industrial applications due to its wide input voltage range, efficient power dissipation, high efficiency, and thermal protection. Additionally, the device includes adjustable frequency operation, adjustable soft start, and an adjustable on-time filter for noise reduction.