Fairchild Introduces 8A Buck Regulator With 95% Peak Efficiency In Servers, Workstations & Distributed POL Applications
Fairchild Semiconductor claims that it is enabling power designers to achieve higher output current and high efficiency using less PCB space with its TinyBuck™ dc-dc regulator. The FAN2108 is an 8A, fully integrated, synchronous buck converter that drives efficiency over a wide input voltage range (3 to 24V) for applications such as set-top boxes, graphic cards, point of load (POL) and industrial power network devices.
According to Fairchild, alternate solutions achieve efficiency by using additional discrete components or require significant board space – lengthening design time and increasing the size of the end application. The TinyBuck™ integrates the controller, MOSFETs, and boot diode into a slim 5 x 6mm MLP footprint – which the company states make it the industry’s smallest 8A solution. The FAN2108 has been designed with Fairchild’s PowerTrench® MOSFET process with extremely low Figure of Merit (FOM) to reduce conduction and switching losses. At 12V input and 8A load current, the FAN2108 delivers 92% efficiency at 3.3V output and 87% efficiency at 1.8V output. At 5V input and 3.3V output, this device achieves a peak efficiency of 95%.
The FAN2108 offers multiple protection features such as over-voltage, over-current, short-circuit and over-temperature. It also features pre-bias startup, allowing the regulator to start-up on a pre-biased output and ensures that the output is not discharged during the soft-start cycle, protecting system ICs from damage.
The FAN2108 utilizes lead-free (Pb-free) terminals and has been characterized for moisture sensitivity in accordance with the Pb-free reflow requirements of the joint IPC/JEDEC standard J-STD-020.
The units are priced (each, 1000 pcs.) at US $1.41, with a delivery of 6 to 8 weeks ARO.
