5.5V Input, 4.5A Switching Current High Efficiency Buck-Boost Converter

The MAX77847 is a highly efficient high-performance buck-boost regulator with an industry-leading quiescent current of 14μA targeted for battery-powered applications. It supports an input voltage range from 1.8V to 5.5V and an output voltage range from 1.8V to 5.2V. The IC provides two programmable switching current limits to optimize external component sizing based on load requirements. Analog Devices’ unique buck-boost controller technology provides high efficiency, excellent load and line transient performance, and a seamless mode transition across the input and output range.

The device features a hardware configuration SEL pin which configures the default output voltage and I2C target address. A hardware dynamic voltage scaling (DVS) pin allows the user to change the output voltage between two output voltages without I2C interference. The I2C interface is optional and allows users to adjust the output voltage with 50mV steps.

The MAX77847 is available in a 2.18mm x 1.66mm 15-bump wafer-level package (WLP).

APPLICATIONS

* 5G PA Supply

* Battery Power Equipment

* Internet of Things (IoT) Devices

* System Power Pre-Regulation

* Smartphones ToF/Facial and Gesture Recognition

* Flexible System Integration

* 1.8V to 5.5V Input Voltage Range

* 1.8V to 5.2V (50mV steps) Output Voltage Range

* 4.5A/3.6A Switching Current Limit

* 14μA Ultra-Low IQ

* I2C Interface

* Programmable Output Voltage

* Programmable Output Slew Rate (DVS)

* Forced PWM Mode Operation (FPWM)

* Output Active Discharge