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This literature is subject to all applicable copyright laws and is not for resale in any manner.FFG1040UC003X Single-Cell Fuel Gauge July 2016 FFG1040UC003X Single-Cell Fuel Gauge Description Features The FFG1040 fuel gauge is a very accurate SOC Optional Battery Characterization Supported reporting gauge designed to be used with cell phones, Typical Relative SOC Error 1% tablets and other portable devices. It uses a proprietary algorithm that tracks the battery to accurately report the Support R down to 3 m to Reduce System SENSE Relative State-of-Charge (RSOC). The FFG1040 also Loss reports User State-of-Charge (USOC), which is an adjusted RSOC value that is designed to be intuitive to Low Power: <3 A Shutdown Current the end user. The FFG1040 works with 1sXp (multiple 100 A Active Current parallel) battery configurations. 2 Integrated I C Slave The FFG1040 includes an integrated temperature Interrupt Pin to Alert the Host Processor of System sensor that can be configured to read temperature from Events (e.g. Low Battery, Low SOC) an external thermistor. The FFG1040 algorithm uses battery voltage, current and temperature to provide the Capable of measuring both on-die and battery pack most accurate State-of-Charge to a user. The temperature using external thermistor 2 temperature readings are accessible via I C for other Host Side or Battery Pack Gauging Capable system level decision. 2 I C relay Master to Support Secondary Slave In addition to RSOC & USOC, the FFG1040 also reports battery voltage, current, capacity, cycle count and Autonomous control of pack side FFG3105 battery battery resistance. monitor and ID with configurable auto polling 2 2 The FFG1040 has the unique capability to relay I C Configurable I C Inactivity Monitor for Auto commands to a secondary slave device. Shutdown When used in autonomous mode the FFG1040 can 12-ball Chip Scale Package (WLCSP) directly control the FFG3105 pack side monitor and ID device and report the temperature and cell voltage Applications information directly from the battery pack. Cell Phones The FFG1040 utilizes a 3 x 4 ball, 0.5 mm pitch, WLCSP with nominal dimensions of 1.51 x 1.96 mm. Mobile Devices Tablets Ordering Information Operating Packing Part Number Package Temperature Range Method FFG1040UC003X -40 to 85C 1.51 x 1.96 mm, 12-Ball CSP, 0.5 mm Ball Pitch Tape and Reel 2014 Fairchild Semiconductor Corporation www.fairchildsemi.com FFG1040UC003X Rev. 1.5