MAX77847

RECOMMENDED FOR NEW DESIGNS

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

Analog Devices MAX77847 Product Info

10 February 2026 5

Features

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 I_Q
I²C Interface
- Programmable Output Voltage
- Programmable Output Slew Rate (DVS)
- Forced PWM Mode Operation (FPWM)
- Output Active Discharge

I²C configurable GPI Pin
- External FPWM Enable Input
- DVS Control Input
SEL Pin to Configure Device
- Default Start-Up Voltage (16 Options)
- I²C Target Address (2 Options)
Soft-Start

Part details & applications

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

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