Summit Microelectronics SMB206A/SMB210A DC-DC integrated circuit range

Summit Microelectronics has expanded its family of programmable DC-DC integrated circuits with the SMB206A and SMB210A. These products bring digital power control to high-volume digital consumer systems as well as general purpose applications.

Like the entire SMB20X family, the latest devices support power management for ′green′ and Energy Star applications. These include a wide range of multimedia consumer and broadband/SoHo applications such as digital LCD/LED/plasma/IP televisions, digital cable/satellite/IP set-top boxes and media gateways, broadband cable/DSL modems, wireless SoHo routers and switches.

The ICs are dual-/single-output integrated DC-DC buck regulators combining the company’s digital programmability with dense integration, ultracompact size and cost-effective bill of materials.

With a serial digital interface and on-board, non-volatile memory, the family can be configured during development and reprogrammed in system by host software.

The devices integrate single or dual step-down DC-DC buck regulators with on-board MOSFET(s) supplying dual 3+3 A (SMB206A) or single 6 A (SMB210A) outputs. Input voltage range is +4.5 to +16 and output voltage range is +0.8 to VIN, accurate to 2.5% over load/line/temperature.

Output voltage is digitally programmable in 10 mV steps while other custom voltages are supported with external resistors. Switching frequency is programmable to 500 kHz or 1 MHz with 180º phase interleave for SMB206A. Light load efficiency is supported by automatic pulse skipping operation. Integrated frequency compensation and feedback resistors minimise BoM count, cost and design effort.