onsemi FAN5358S718X

FAN5358 Series 5.5 V 500 mA 2 MHz Buck SMT Switching Regulator - SOT-363

Switching Regulator, Voltage-Mode, 1.15A, 2000kHz Switching Freq-Max, PDSO6

2MHz, 500mA Synchronous Buck Regulator

VOLTAGE-MODE RoHS Compliant Fixed Positive Switching Regulator IC -40C~85C TA 2MHz 500mA 1.25mm

The FAN5358 is a step-down switching voltage regulator that delivers a fixed output from an input voltage supply of 2.7V to 5.5V. Using a proprietary architecture with synchronous rectification, the device is capable of delivering 500mA and maintaining a very high efficiency of over 80% at load currents as low as 1mA. The regulator operates at a nominal frequency of 2MHz, which reduces the value of the external components to as low as 2.2µH for the output inductor and 4.7µF for the output capacitor. At moderate and light loads, pulse frequency modulation is used to operate the device in power-save mode with a typical quiescent current of 25µA. Even with such a low quiescent current, the part exhibits excellent transient response during large load swings. In shutdown mode, the supply current drops below 1µA, reducing power consumption. FAN5358 is available in a 6-lead SC70 package.