1-Cell ModelGauge m5 EZ Fuel Gauge with Protector, Internal Self-Discharge Detection and SHA-256 Authentication

The MAX17300–MAX17303/MAX17310–MAX17313 is a 24μA IQ stand-alone pack-side fuel gauge IC with protector and optional SHA-256 authentication for 1-cell lithium-ion/polymer batteries.

The IC monitors the voltage, current, temperature, and state of the battery to provide against over/undervoltage, overcurrent, short-circuit, over/undertemperature and overcharge conditions protection using external high-side N-FETs, and provides charging prescription to ensure that the lithium-ion/polymer battery operates under safe conditions prolonging the life of the battery.

To prevent battery pack cloning, the IC integrates SHA-256 authentication with a 160-bit secret key. Each IC incorporates a unique 64-bit ID.

The fuel gauge uses ModelGauge m5 algorithm that combines the short-term accuracy and linearity of a coulomb counter with the long-term stability of a voltage-based fuel gauge to provide industry-leading fuel-gauge accuracy.

The IC automatically compensates for cell aging, temperature, and discharge rate, and provides accurate state-of-charge (SOC) in milliampere-hours (mAh) or percentage (%) over a wide range of operating conditions.

Dynamic power functionality provides the instantaneous maximum battery output power which can be delivered to the system without violating the minimum system input voltage.

A Maxim 1-Wire® or 2-wire I2C interface provides access to data and control registers. The IC is available in a lead-free, 3mm x 3mm 14-pin TDFN and 1.7mm x 2.5mm 15-bump 0.5mm pitch WLP packages.

Applications

* Smartphones, Tablets, and 2-in-1 Laptops * Smartwatches and Wearables * Medical Devices, Health and Fitness Monitors * Digital Still, Video, and Action Cameras * Handheld Computers and Terminals * Handheld Radios * Home and Building Automation, Sensors * Smart Batteries

* Battery Health + Programmable Safety/Protection

* Overvoltage (Temperature Dependent) * Overcharge Current * Over/Undertemperature* Battery Internal Self-Discharge Detection (MAX17300/10 Only) * Ideal Diode Discharge During Charge Fault * Charging Prescriptions (JEITA) * Zero-Volt Charging Option * Undervoltage + SmartEmpty * Overdischarge/Short-Circuit

* Nonvolatile Memory for Stand-Alone Operation

* ​History Logging, User Data (122 Bytes)

* Low Quiescent Current

* FETs Enabled: 24µA Active, 18µA Hibernate * FETs Disabled: 5µA Ship, 0.5µA/0.02µA DeepShip

* Parallel Battery Management (MAX17300/10 Only) * Pushbutton Wakeup—Eliminates System Consumption Until Button Press * ModelGauge m5 EZ Algorithm

* Percent, Capacity,Time-to-Empty/Full, Age * Cycle+™ Age Forecast

* Dynamic Power—Estimates Power Capability * Precision Measurement Without Calibration

* ​Current, Voltage, Power, Time, Cycles * Die Temperature​/Thermistor