Battery Management Solutions
As portable and wearable devices proliferate, the need for safe, secure, and effective battery management solutions is becoming increasingly important. Our broad portfolio of battery management solutions includes battery chargers, fuel gauges, identifiers, and authenticators and also battery monitors, protectors, and selectors. These solutions reduce cost, save space, and help to significantly extend the battery life of portable products while making them safer.
Our battery charger ICs allow safe charging for 1- to 3-cell Li-ion (Li+)/Li-Polymer, NiMH/NiCd, lead-acid, and rechargeable batteries of other chemistries in multiple form factors. They provide support for USB Type-C devices, meeting all power delivery (PD) 3.0 voltage range specifications.
Our fuel gauges monitor remaining battery charge using the proprietary ModelGauge™ algorithm to provide the highest accuracy. The comprehensive integrated protection improves battery safety while SHA-256 authentication helps prevent battery-pack cloning. These fuel gauges can be used for 1-cell as well as multiple-series cell batteries. In combination with our battery chargers, they provide the efficiency, accuracy, and protection required to support Li+ battery applications.
Battery Identifiers and Authenticators
Our identification ICs provide data storage and serial number identification for battery packs. Cyclic redundancy check (CRC) verification provides data integrity during communication. The low-voltage 1-Wire® interface of our battery identification ICs enables serial communication on a single battery contact. The 64-bit unique serial number allows multidrop networking and identification of individual devices.
Our battery authentication ICs employ hardware-based Secure Hash Algorithm-256 (SHA-256) token authentication that provides security without the added cost and complexity of a microprocessor-based system. Battery authentication is performed using a single contact through the 1-Wire interface.
USB-C Power Delivery Controllers
USB-C Power Delivery enables high power charging up to 100W. Maxim’s USB-C Power Delivery controllers offer out-of-the-box USB-C PD 3.0 compliant solutions with Fast Role Swap and Dual Role Port (DRP) support, legacy USB port support and enables robust designs with high VBUS rating, CC pin short protection, moisture detection and corrosion prevention.
Our battery monitor ICs have a high cell count, allowing a flexible system architecture. They provide simultaneous sampling to improve both cell balancing and battery pack lifetime. They also combine comprehensive diagnostics and robust communications with high reliability.
We have a selection of battery protector ICs that enhance the useful operating life of Li+ batteries by monitoring individual cell voltages and preventing overvoltage or undervoltage conditions. They also protect battery packs against charge current, discharge current, and battery-pack short/ fault conditions. In addition, they also detect abnormal levels of internal self-discharge that can be an early indicator of batteries becoming potentially hazardous.
Our range of battery selector ICs provide power-source control for dual-battery systems. By independently performing power-source monitoring and selection, the system power-management µP is freed up to perform other tasks.
Battery Management Development Boards
Evaluation System for the MAX8971 (Industry's Smallest 1.55A 1-Cell Li+ DC-DC Charger)
Evaluation Kit for the MAX77650/MAX77651 (Ultra-Low Power PMIC with 3-Output SIMO and Power Path Charger for Small Li+)
Battery Management Design Resources
Design Tools and Software
Design Solutions and Design Guides
SIMO Technology Overview using the MAX77650 PMIC
8:10 January 15, 2018
How to Measure Temperature in Portable Projects II - Using the MAX17055 Fuel Gauge
3:12 November 13, 2017
How to Use the MAX745 as a Maximum Power Point Tracker Solar Charger
6:08 December 16, 2019
16:10 June 01, 2020
Battery Management Featured Products
JEITA-Compliant, Li+ Charger with and USB EnumerationMAX77301
A JEITA-compliant lithium-ion linear battery charger that operates from a USB port, a dedicated charger, or universal adapter. The IC provides automatic adapter-type detection and enumeration with a USB host or hub. Provides the simplest and smallest USB-compliant charging solution.
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High-Efficiency Buck-Boost RegulatorMAX77801
The MAX77801 is a high-current, high-efficiency buck-boost targeted to mobile applications that use a Li-ion battery or similar chemistries. The MAX77801 utilizes a four-switch H-bridge configuration to support buck and boost operating modes. Buck-boost provides 2.60V to 4.1875V of output voltage range and up to 2A output current.
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