Consumers are demanding that mobile phone designers and chipset reference design companies support more multimedia features in their devices, which in turn leads to a demand for powerful core processors requiring power reduction technologies such as Dynamic Voltage Scaling (DVS). Fairchild Semiconductor's digitally programmable buck rectifier, the FAN5365 (6MHz, 800mA/1A),
It provides a dynamic, high-efficiency, and compact footprint, making it ideal for PMICs in system engineer designs.

The FAN5365 is the smallest 6MHz DVS buck rectifier currently available in a 1.27mm x 1.29mm, 9-pin WLCSP package, and can reduce mounting space by up to 40% compared to existing methods, making it the best solution for powering core processes in single-cell lithium-ion battery equipment such as smartphones, mobile PCs, tablets, and wireless broadband.

This product provides excellent transient response while consuming 40µA of current in PFM mode, which improves efficiency at low loads. Under heavy loads, the rectifier automatically switches to a fixed-frequency 6MHz PWM mode, allowing designers to use inexpensive, small-chip inductors and capacitors. The FAN5365 supports load currents up to 800mA or 1A.