onsemi FAN53526UC224X, Step Down DC-DC Converter, 6.25mA, WLCSP

The ON Semiconductor series FAN53526 is a step−down switching voltage regulator that delivers a digitally programmable output from an input voltage supply of 2.5 V to 5.5 V. The output voltage is programmed through an I2C interface capable of operating up to 3.4 MHz Using a proprietary architecture with synchronous rectification, the FAN53526 is capable of delivering 3.0 A continuous at over 80% efficiency, maintaining that efficiency at load currents as low as 10 mA.

Fixed−Frequency Operation: 2.4 MHz
Best−in−Class Load Transient
Continuous Output Current Capability: 3.0 A
2.5 V to 5.5 V Input Voltage Range
Digitally Programmable Output Voltage:
0.600 V to 1.39375 V in 6.25 mV Steps
Programmable Slew Rate for Voltage Transitions
I2C−Compatible Interface Up to 3.4 Mbps
PFM Mode for High Efficiency in Light-Load
Quiescent Current in PFM Mode: 50 A (Typical)
Input Under−Voltage Lockout (UVLO)
Thermal Shutdown and Overload Protection
15−Bump Wafer−Level Chip Scale Package (WLCSP)