MAX77720

RECOMMENDED FOR NEW DESIGNS

Wide Output-Voltage Range, Dual-Polarity PMIC

Dual Polarity PMIC with Boost and Inverted Buck-Boost Regulator

Data Sheet (Rev. 0) Product Selection Table

Part Models: 2
1ku List Price: Starting From $1.87

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Overview

2.5V to 5.5V Input Voltage Range
Programmable Output-Voltage Range (Up to +20V and Down to -24V)
Flexible and Configurable
- I²C Interface
- Factory OTP Settings Available
- Programmable Turn-On and -Off Delay Between Rails
1.2V to 3.6V VIO-Compatible
True Shutdown™ for Boost

Programmable Peak Current Limit for Boost (Up to 1A and Down to 0.5A)
Thermal-Shutdown Protection
Fault-Condition Flag
Error Pin for External Sensor Fault Condition
Controlled Inrush Current During Soft-Start
-40°C to +125°C Operating Temperature Range
Small Size
- 3.86mm² Wafer-Level Package (WLP)
- 20-Bump, 0.4mm-Pitch, 5 x 4 Array

The MAX77720 dual-output DC-DC converter generates two independently regulating positive and negative supply voltages. The positive output delivers up to 4W of power at the output while the negative output delivers up to 4.8W of power. The MAX77720 is ideal for powering time of flight (ToF) imaging sensors and OLED displays in smart internet of things (IoT) devices.

The MAX77720 generates an adjustable negative output down to -24V and a positive output voltage up to +20V. The negative output operates at a fixed 1.5MHz frequency while the positive output operates at a fixed 1MHz frequency to ease noise filtering in sensitive applications and to reduce external component size.

The nERR pin, when connected to an external device’s output pin, is used to disable the regulators to signal an external error. This error can be cleared through I²C from a host processor to re-enable the regulators. While in the error on state, there is an option for the active discharge to be enabled or disabled (for example, to set the regulator outputs to a high-Z floating).

A bidirectional I²C serial interface allows for configuring and checking the status of the devices. Numerous factory-programmable options allow the device to be tailored for many applications, enabling faster time to market.

APPLICATIONS

ToF Sensors
OLED Displays
Bipolar Amplifiers

Part Models: 2
1ku List Price: Starting From $1.87

Documentation

Data Sheet 1

MAX77720: Wide Output-Voltage Range, Dual- Polarity PMIC Data Sheet (Rev.0) 09/25/2023

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
MAX77720SANP+	Wafer-Level Package 5x4 Bump, Full Array 20 pins	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX77720SANP+T	Wafer-Level Package 5x4 Bump, Full Array 20 pins	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Tools & Simulations

Software Development 1

MAX77720 EVKIT GUI, 1.0.0

Evaluation Kits

Evaluation Kit for MAX77720

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Features and Benefits

Easy to Use
GUI-Driven I²C Interface
Assembled and Fully Tested
3.3V, 1.8V, 1.2VIO Compatible
On-Board Electronic Loads
- Steady-State, Transient, and Random Modes

Product Details

The MAX77720 evaluation kit (EV kit) allows for easy experimentation with various MAX77720 features, including a dual output, DC-DC converter that generates an adjustable positive and an adjustable negative output, a nERR pin, and an I²C interface. Windows®-based software provides a user-friendly graphical interface as well as a detailed register-based interface to exercise the features of the MAX77720.

Windows-based graphical user interface (GUI) software is available for use with the EV kit and can be downloaded from the Analog Devices website at https://www.analog.com/max77720evkit. Windows 7 or newer Windows operating system is required to use the EV kit software.

Resources

MAX77720EVKIT Gerber Files
9/25/2023

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