onsemi FAN4910xEVB Evaluation Board is a compact circuit for evaluating the FAN4910X family of buck-boost regulators in a 20-bump Wafer-Level Chip-Scale Package (WLCSP). The FAN49101 and FAN49103 IC versions include a programmable I²C interface, and the FAN49100 version is a stand-alone IC with MODE (forced PWM or Auto Mode) and PT (forced pass-thru) feature pins. 

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