MAX17335 Datasheet | Analog Devices

Description The MAX17335 is a 35μA 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 IC regulates charging by modulating the charge N-FET, using Accu Charge™ 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 Charging - 1m A to 500m A directly from universal 5V USB - No USB identification/coordination needed - High-Power Parallel Packs (>1000m A) - 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 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 Model Gauge™ m5 EZ algorithm that bines the short-term accuracy and linearity of a coulomb counter with the long-term stability of a voltagebased fuel gauge to provide industry-leading accuracy. The IC automatically pensates for cell aging, temperature, and discharge rate while providing accurate state-ofcharge (SOC) in milliampere-hours (m Ah) 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 - USB PPS and Direct Charging - Smart Batteries and Hybrid Supercap Batteries - Dual Screen Smartphones, Tablets - Hearables, Wearables, Smartwatches - Medical Devices, Health, Fitness...