DC/DC Controller Accommodates Low-Resistance Inductors

DC/DC Controller Accommodates Low-Resistance Inductors
Linear Technology Corp.

The LTC3875 dual output current-mode synchronous step-down dc/dc controller enables the use of very low dc-resistance (DCR) power inductors by using a novel DCR sensing architecture that enhances the signal-to-noise ratio of the current sense signal. Power inductor DCR, as low as 0.2 milliOhms can be used without a sense resistor to maximize converter efficiency and increase power density. This DCR sensing technique dramatically reduces the switching jitter normally associated with low DCR sensing applications. The LTC3875 operates over an input voltage range of 4.5V to 38V and produces a fixed output voltage from 0.6V to 3.5V with ±0.5% accuracy from -40°C to +125°C. The LTC3875 is available in a 40-lead, 6 mm x 6 mm QFN package. Price starts at $3.47 each/1,000. A datasheet is available at http://cds.linear.com/docs/en/datasheet/3875f.pdf.  

Linear Technology Corp.
Milpitas, CA

Contact Info

Company: Linear Technology Corp.
Country: United States (USA)
Phone number: 408-432-1900 x2419

Suggested Articles

U.S. Commerce Department beefs up attacks on TikTok and WeChat, banning downloads at first. Eventually the bans will be total, unless some other agree

Analyst Jack Gold describes the TikTok battle as a big win for China.

Analyst Leonard Lee argues that if Nvidia can get regulatory approvals to buy Arm, the entity would be a challenge to Intel's data center dominance.…