MAX17335 Series

The MAX17335 is a 35μA IQstand-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 IC regulates charging by modulating the charge N-FET, using AccuCharge™charger technology. The IC regulates charge voltage, current, and FET temperature. Stand-alone charging is supported by flexible configuration in nonvolatile memory. The IC supports the following applications:Low-Power Charging1mA to 500mA directly from universal 5V USBNo USB identification/coordination neededHigh-Power Parallel Packs (>1000mA)Independently charges parallel packsPrevents cross-charging for parallel batteriesCoordinates external DC-DC with alertsMinimizes dropout and heatProtection and Charging Control—pack or host sideThe IC 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.APPLICATIONSUSB PPS and Direct ChargingSmart Batteries and Hybrid Supercap BatteriesDual Screen Smartphones, TabletsHearables, Wearables, SmartwatchesMedical Devices, Health, Fitness MonitorsHandheld Radios, Computers, AccessoriesHome/Building Automation, Sensors, CamerasParallel Battery AR/VR Systems