MAXIM MAX17330X22+

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. • 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 Non-Volatile Programmable Stand-Alone AccuCharge Charger 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. 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
• 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

• USB PPS and Direct Charging
• Smart Batteries and Hybrid Supercap Batteries
• Dual Screen Smartphones, Tablets
• Hearables, Wearables, Smartwatches
• Medical Devices, Health, Fitness Monitors
• Handheld Radios, Computers, Accessories
• Home/Building Automation, Sensors, Cameras
• Parallel Battery AR/VR Systems