Power Electronics

Triple Buck Controller Features Ratiometric Tracking

Linear Technology’s LTC3853 is a highly efficient, triple-output synchronous stepdown controller that features coincident or ratiometric tracking that safely powers pre-biased loads. The 4.5-V to 24-V (28V Max.) input range encompasses a wide variety of applications including most intermediate bus voltages.

Device type: triple, 120° out-of-phase synchronous buck controller
Input voltage: 4.5 V to 24 V (28 V max)
Features: on-board gate drivers power all N-channel MOSFET stages and can produce output currents up to 20 A per phase with output voltages ranging from 0.8 V to 13.5 V; safely powers pre-biased loads; switching frequency is fixed or synchronizable from 250 kHz to 750 kHz; operating mode may be selected as burst mode, pulse skip, or forced continuous; offers DCR or RSENSE current-sense options, peak current-mode control, on-board 5-V linear regulator, ±1% reference voltage accuracy over -40°C to +125°C, programmable soft-start, power good signal, current foldback
Operating temperature range: -40°C to +125°C
Packaging: 6-mm x 6-mm QFN-40
RoHS compliant? leadfree available
Target applications: point-of-load regulation in datacom, telecom, set-top boxes, basestations, and multifunction printers, where multiple voltage rails must deliver high power with low heat dissipation in a small solution size.
Pricing: begins at $3.53 each in 1,000-piece quantities
Availability: available now
Data sheet? yes see, www.linear.com/pc/productDetail.jsp?navId=
H0,C1,C1003,C1042,C1032,C1062,P86295

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