MAX17552ATB+T

Introduction

The MAX17552ATB+T is an integrated circuit that includes a high-efficiency DC/DC buck (step-down) voltage regulator with differential voltage sensing, and a separate boost (step-up) voltage regulator with integrated current-limit protection. The buck regulator is capable of conversion efficiency of over 90%, while the boost regulator can deliver up to 50mA of output current.

Application Field

The MAX17552ATB+T is designed for use in portable battery-powered applications such as laptops, tablets, smartphones, and other mobile devices. It provides efficient power conversion for single-cell Li-Ion and Li-Polymer batteries. It can also be used in other low-power applications that require DC/DC voltage regulation.

The device’s integrated features make it suitable for wide variety of applications. It interfaces to the system through I2C or SMBus, and can be used to implement many different system power-management application scenarios. The buck regulator can be configured to support multiple output voltages and current budgets, as well as adjustable output voltage logic thresholds.

The boost regulator supports multiple logic thresholds for controlling system load and can be used to drive LEDs, sensors, or other circuitry with low output current requirements. The device is also designed to operate from a wide voltage range and can operate from a Li-Ion battery or any voltage source from 2.5V to 16V.

Working Principle

The MAX17552ATB+T is based on the “buck-boost” voltage regulation architecture. It integrates a buck regulator and a boost regulator in one integrated circuit. Both regulators utilize a PWM (pulsewidth modulation) control scheme that adjusts the duty cycle of a switching element in order to regulate the output voltage.

The buck regulator reduces (“steps down”) the input voltage to a desired output voltage at a specific current level. The duty cycle of the switching element is adjusted until the output voltage reaches the desired level. The device operates in the “pulsed width modulation” (PWM) mode, where the duty cycle of the switching element changes depending on the input voltage source, output voltage setting, and output current.

The boost regulator, on the other hand, increases (“steps up”) the input voltage to a desired output voltage at a specific current level. This regulator also uses the same PWM control scheme for adjusting the duty cycle of the switching element. The boost regulator is designed to provide higher efficiency compared to standard boost converters, as it does not require a large output capacitor for proper operation.

Conclusion

The MAX17552ATB+T is an integrated DC/DC voltage regulator that includes a high-efficiency buck (step-down) voltage regulator with differential voltage sensing, and a separate boost (step-up) voltage regulator with integrated current-limit protection. It is designed for use in portable battery-powered applications such as laptops, tablets, smartphones, and other mobile devices. It can be used to implement many different system power-management application scenarios. The device operates using a PWM control scheme, which adjusts the duty cycle of the switching elements to regulate the output voltage.