AccuCharge + ModelGauge 1-Cell Charger, Fuel Gauge, and Protector

The MAX17330 is not recommended for new designs. The replacement part is the MAX17332.

The MAX17330 is a 28μA IQ stand-alone charger, fuel gauge, protector, and battery internal self-discharge detection IC for 1-cell lithium-ion/polymer batteries. When a voltage source is present, the MAX17330 regulates charging by modulating the charge N-FET, using AccuCharge™ charger technology. The MAX17330 regulates charge voltage, current, and FET temperature. Stand-alone charging is supported by flexible configuration in nonvolatile memory. The IC supports the following:

* Low-Power Charging

* 1mA to 500mA directly from universal 5V USB

* No USB identification/coordination needed

* High-Power Parallel Packs (>1000mA)

* Independently charges parallel packs

* Prevents cross-charging for parallel batteries

* Coordinates external DC-DC with alerts

* Minimizes dropout and heat

* Protection and Charging Control —pack or host side

The MAX17330 ideal diode circuit supports a quick response to system transients and adapter removal with low voltage drop across the CHG FET.

The IC uses the ModelGauge™ m5 EZ 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 accuracy. The IC automatically compensates for cell aging, temperature, and discharge rate while providing accurate state-of-charge (SOC) in milliampere-hours (mAh) or percentage (%) over a wide range of operating conditions.

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

Applications

* Dual Screen Smartphones, Tablets

* Handheld Radios, Computers, Accessories

* Hearables, Wearables, Smartwatches

* Home/Building Automation, Sensors, Cameras

* Medical Devices, Health, Fitness Monitors

* Parallel Battery AR/VR Systems

* Smart Batteries and Hybrid Supercap Batteries

* USB PPS and Direct Charging

* Non-Volatile Programmable Stand-Alone AccuCharge Charger

* 0.2% Charge Voltage 3.6V to 4.8V, Configurable * 1% Charge Current, 256 Current Settings * FET Temperature Limit and Heat Regulation * Prequal and Step-Charging Options * JEITA—6 Temperature Regions

* Battery Health + Programmable Safety/Protection

* Overvoltage/Overcharge-Current

* Temperature Region Dependent

* Overcharge/Discharge/Short-Circuit Current * Over/Under Temperature * Zero-Volt or Greater than 1.8V Charging Option * Undervoltage + SmartEmpty

* Pushbutton Wakeup/Factory Ship Mode (0.5μA) * ModelGauge m5 EZ Algorithm

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

* Dynamic Power—Estimates Power Capability * SHA-256 Authentication to Prevent Cloning * Precision Measurement Without Calibration

* ​Current, Voltage, Power, Time, Cycles * Die Temperature​ and two Thermistors>

* History Logging, User Data * Low Quiescent Current

* FETs Enabled: 28µA Active, 21µA Hibernate> * FETs Disabled: 8µA Ship, 0.5µA/0.1µA Shutdown

* 2-wire (I2C/SMBus™) * 1.9mm x 2.5mm 15-bump 0.5mm pitch WLP