Twelve output phases interleaved at 60° per phase reduce ripple current. Each phase handles roughly one-twelfth of the total load current.
Control features and configuration
Control features include current limit, enable, frequency control, phase control, and soft start. The controller does not require external programming or firmware — it is a pure analog controller configured through resistor dividers, timing capacitors, and feedback compensation. Clock sync input allows the switching frequency to be locked to an external clock, which helps manage EMI in noise-sensitive systems or synchronize multiple converters in a PolyPhase array.
The part comes in a 48-lead LQFP with an exposed pad (48-eLQFP, 7x7 mm body). Surface-mount assembly is straightforward with standard reflow profiles.
The LTC3871HLXE-1#PBF is marked Active with no last-time-buy notice. ROHS3 compliant per. No PPAP documentation is cited in the ledger — if your program requires AEC-Q100 or PPAP, confirm with the manufacturer before committing the BOM.