Description

The MAX77840 is a 3.15A switched-mode charger and ModelGauge™ fuel gauge with integrated USB BC1.2 detection for Li-ion batteries and a SAFEOUT LDO.The charger integrates all switches and operates at either 4MHz or 2MHz (programmable) switching frequency, allowing selection of the smallest external components or achieving lowest heat dissipation. The MAX77840 is ideally suited for devices such as mobile point-of-sale devices, portable medical electronics, or other handheld devices. It includes the USB BC1.2 detection function to recognize common USB adapters and set the input current limit automatically. The MAX77840 can supply up to 1.5A OTG current with proprietary MAXOTG protection, that limits the OTG output current to prevent system voltage from collapsing under heavy OTG loads.The ModelGauge m5 provides accurate battery fuel gauging and operates with extremely low battery current (25µA, typ) during standby or sleep mode to extend battery life. The interaction between the ModelGauge m5 and the charger provides end users a superior charging experience in a single IC.Shipping mode is built into the MAX77840 to minimize battery drain when the device is not in use. The MAX77840 features an I2C 3.0 compatible serial interface. It is offered in a 3.87mm x 3.96mm, 9 x 9 bump array wafer-level package (WLP) with 0.4mm pitch.ApplicationsIndustrial PCsPortable Medical DevicesMobile Point-of-Sale DevicesWireless SpeakersE-CigarettesSmart Home Automation, SensorsInternet of Things (IoT)