The SMB220 and SMB221 integrated 10- and 20-A dc/dc buck regulators feature built-in MOSFETs, digital programmability and non-volatile configuration. They suit enterprise servers and storage systems, enterprise and carrier switches, routers, base stations, as well as IP digital television and set-top box technologies.
The integrated buck regulators feature single-output and efficiency of up to 96% and 1% output regulation. They provide a serial digital interface and on-board non-volatile memory. The devices offer a +4.5 to +16-V input range, a +0.5 to Vin output range, and are accurate to ±1.5% over load, line, temperature. The output voltage is programmable in 10-mV steps up to 2.5 V and 20-mV steps up to 5.0 V. PWM switching frequency is programmable from 250 kHz to 1 MHz and light load efficiency is supported by automatic pulse-skipping (PFM) operation. (Ea/10,000: SMB220, $1.80; SMB221, $2.50 — available now.)
By Paul O’Shea
Summit Microelectronics , Sunnyvale , CA
Information 408-523-1000
http://www.summitmicro.com
Advertisement
Learn more about Summit Microelectronics
