Dual-output buck controller features digital power mgmt

Dual-output buck controller features digital power mgmt

The LTC3880/-1 dual output synchronous step-down dc/dc controller features an I2C-based PMBus interface for digital power system management. It combines best-in-class analog switching regulator performance with mixed signal data conversion, and is supported by the LTpowerPlay software development system.

The buck dc/dc controller can regulate two independent outputs or be configured for a two-phase single output, and up to six phases can be interleaved and paralleled together. It features integrated gate drivers to drive all n-channel power MOSFETs from input voltages ranging from 4.5 to 24 V, and it can produce ±0.50% output-voltage accuracy from 0.5 to 5.5-V with output currents up to 30-A per phase. Programmable control parameters include output voltage, margining and current limits, input and output supervisory limits, power-up sequencing and tracking, switching frequency, and identification and traceability data. On-chip data converters and EEPROM allow for the capture and nonvolatile storage of regulator configuration settings and telemetry variables. ($5.35 ea/1,000 — available now.)

By Paul O’Shea

Linear Technology , Milpitas , CA
Sales Office 408-428-2050
www.linear.com