FAN53741 Datasheet | onsemi

DATA SHEET .onsemi. Synchronous Buck Regulator, 2.5 MHz WLCSP6 1.38x0.94x0.625 CASE 567UH Description The FAN53741 is a 2.5 MHz step- down switching voltage regulator, that delivers a fixed output from an input voltage supply of 2.3 V to 5.5 V. Using a proprietary architecture with synchronous rectification, the FAN53741 is capable of delivering a peak efficiency of 97% and can support a max load of 1300 m A. The regulator operates at a nominal fixed frequency of 2.5 MHz, which reduces the value of the external ponents achieving a total solution size of 5.24 mm2. At moderate and light load, Pulse Frequency Modulation (PFM) is used to operate the device with a low quiescent current of 60 m A. Even with such a low quiescent current, the part exhibits excellent transient response during load swings. At higher loads, the system automatically switches to fixed- frequency control, operating at 2.5 MHz. In Shutdown Mode, the supply current drops below 0.5 m A, reducing power consumption. The FAN53741 is available in 6- bump, 0.4 mm pitch, Wafer- Level Chip- Scale Package (WLCSP). Features - 60 m A Typical Quiescent Current - 5.24 mm2 Total Solution Size - 1300 m A Output Current Capability - Programmable Output Voltage 0.6 V to 3.3 V in 25 m V Steps via I2C Functionality - Programmable Current Limit 530 m A to 2150 m A in 108 m A Steps via I2C Functionality - 2.3 V to 5.5 V Input Voltage Range - 2.5 MHz Fixed- Frequency Operation - Best- in- Class Load Transient Response - Internal Soft- Start Limits Battery Current Below 150 m A to avoid Brown- out Scenarios - Protection Faults (UVLO, OCP and TSP) - Thermal Shutdown and Overload Protection - 6- Bump WLCSP, 0.4 mm Pitch - This is a Pb- Free Device Applications - Smart Phones - Wearables - Smart Watch - Health Monitoring - Sensor Drive - Energy Harvesting - Utility and Safety...