MAX77818

PRODUCTION

MAX77818

Dual Input, Power Path, 3A Switching Mode Charger with Fuel Gauge

Industry's Highest Efficiency Switching Mode Charger in a Smaller Solution Size in 3.87mm x 3.61mm WLP

PRODUCTION

MAX77818: Simplified Functional Diagram slide

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Features

Smart Power Path, Dual Input Switching Charger
- Up to 13.4V Operating/16V Withstand/4A (CHGIN)
- Up to 6V Operating/1.26A (WCIN)
- Reverse Leakage Blocking
- Reverse Boost with up to 5.1V/1.5A (OTG)
- Integrated Low-Loss FETs for 3A Charging/4.5A Discharging
- 95.6% Peak Efficiency at 5V/4.35V
- Full Feature Charger with Protection
- Thermal Regulation and JEITA Compliance
ModelGauge m5 Fuel Gauge
- Time-to-Empty and Time-to-Full Prediction
- Accurate Battery Capacity (SOC) and Time-to-Empty Readings
  - Temperature, Age, and Discharge Rate Compensated
  - No Calibration
  - Integrated FET Current Sensing
  - Maintains Accuracy without Empty, Full, or Idle States
- Low Quiescent Current (I_Q)
Two High Voltage Input LDOs
I²C Serial Interface
72-Bump, 3.867mm x 3.608mm, 0.4mm Pitch WLP

Additional Details

The MAX77818 integrates a high-performance 3A switching charger and proprietary ModelGauge™ m5 fuel gauge in a space saving WLP package, ideal for USB powered portable devices. The smart power path charger supports two inputs with reverse blocking and USB On-the-Go (OTG), integrates all power switches, operates at high-switching frequency with high efficiency, enabling low heat designs with small external components. The ModelGauge m5 algorithm combines the excellent short-term accuracy and linearity of a coulomb counter with the long-term stability of a voltage-based fuel gauge, along with temperature compensation to provide industry-leading fuel-gauge accuracy. The device also integrates two high voltage input LDOs and is highly programmable with I²C interface.

Applications

Bluetooth Headsets
Handheld Devices
Industrial PCs
Internet of Things (IoT)
Portable Medical Devices
Smart Home Automation, Sensors
Wearable, Smart Watches
Wireless Speakers

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Ask a Question

Submit your question below and we will return the best answer from ADI’s knowledge database:

Other places you can find help

Support

Analog Devices Support Portal is a one-stop shop to answer all your ADI questions.

Visit the ADI Support Page

Ask the ADI community for help.

Ask the EngineerZone Community

FAQs

Sales & Ordering FAQs

Part Models 2

1ku List Price

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Technical Documents 4

MAX77818: Dual Input, Power Path, 3A Switching Mode Charger with Fuel Gauge Data Sheet (Rev.4) 04/02/2020

MAX77818 Reliability Data 01/12/2023

Design Solutions 34 - How to Make Your IoT Gadget Smaller and Cooler 07/01/2021

Enabling Automation in Logistics and Retail - Part 1 07/09/2024

Design Resources 2

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
MAX77818EWZ+	Wafer-Level Package 9x8 Bump, Full Array	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
MAX77818EWZ+T	Wafer-Level Package 9x8 Bump, Full Array	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys

MAX77818EWZ+
Pin/Package Drawing
Wafer-Level Package 9x8 Bump, Full Array
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

MAX77818EWZ+T
Pin/Package Drawing
Wafer-Level Package 9x8 Bump, Full Array
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

PCN/PDN Information

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Part Models

Product Lifecycle

PCN

Mar 1, 2022

- 2259

TEST

MAX77818EWZ+

PRODUCTION

MAX77818EWZ+T

PRODUCTION

pdf

pcn_2259

Filter by Model

Part Models

Product Lifecycle

PCN

Mar 1, 2022

- 2259

TEST

MAX77818EWZ+

PRODUCTION

MAX77818EWZ+T

PRODUCTION

pdf

pcn_2259

MAX77818EVSYS

Evaluation System for MAX77818

MAX77818EVSYS

Evaluation System for MAX77818

Features and Benefits

Demonstrates 12V_CHGIN, 3A Charge
Demonstrates m5 Fuel Gauge Performance
Demonstrates Dual Input Charge
Demonstrates OTG Mode
Evaluates MAX77818 Detail Performances

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Product Detail

The MAX77818 evaluation system (EV system) consists of a MAX77818 evaluation kit (EV kit) and a companion Maxim MINIQUSB interface board.

The MAX77818 EV kit is an assembled and tested PC board that demonstrates the MAX77818. The IC contains 12V input and 3A output switching mode charger.

The Maxim MINIQUSB interface board allows an IBM- compatible PC to use its USB port to emulate an I²C 2-wire interface. Windows XP^®/Windows^® 7 software provides a user-friendly interface to exercise the features of the MAX77818. The menu-driven program offers a graphical user interface with control buttons.

Resources

ZIP

MAX77818EVSYS Gerber File - Design Files