MAX750ACSA-T

Introduction

MAX750ACSA-T is the newest member of the DC/DC switching regulator family available from Maxim Integrated. It is specifically designed for general-purpose voltage regulation and is suitable for a variety of applications. This document will explain the application field for the MAX750ACSA-T and its working principle.

Application Field of MAX750ACSA-T

The application field of the MAX750ACSA-T includes space-constrained portable electronic devices, such as digital cameras, GPS receivers and smart phones. Due to its small form factor, the MAX750ACSA-T is well-suited for those devices that require a low power voltage regulator, yet demand high performance. The MAX750ACSA-T also features an ultra-wide input voltage range (2V to 18V) and is capable of delivering a stable output voltage, even under varying input voltage and output current conditions.

Working Principle of MAX750ACSA-T

The working principle of the MAX750ACSA-T is based on pulse-width modulation (PWM) control. PWM is a method of controlling the average output voltage of a DC/DC switching regulator by modulating the duty cycle of a fixed-frequency type voltage regulator. The MAX750ACSA-T features an optimized internal frequency modulation circuit operating at a fixed frequency of 500 kHz. This frequency modulation circuit compensates for changes in the input voltage and output current, thus allowing the MAX750ACSA-T to achieve a high power efficiency and low ripple in the output voltage.

The MAX750ACSA-T also features soft start and over-current protection circuitry. Soft start circuitry reduces the inrush current during start-up by progressively increasing the output voltage until the desired voltage level is reached. This protects the device against any sudden surges or overloads. The over-current protection circuitry is designed to detect and limit the output current when it exceeds the maximum allowed levels, thus preventing damage to the device.

Conclusion

The MAX750ACSA-T is a versatile DC/DC switching regulator from Maxim Integrated, specifically designed for use in space-constrained applications. It features an ultra-wide input voltage range, high power efficiency and low output ripple. Its working principle is based on pulse-width modulation (PWM) control, which is further improved by the internal frequency modulation circuit. The MAX750ACSA-T also features soft start and over-current protection circuitry to ensure maximum safety and reliability.