3.5A, 42V Step-Down — Rail Sizing and Switching Range
The LT8610ABEMSE#TRPBF is a 3.5A step-down (buck) regulator from Analog Devices, part of the Silent Switcher family. Its 3.4V to 42V input range covers common 12V and 24V industrial rails, with headroom for transients up to the abs-max ceiling. The adjustable output from 0.97V up to 42V lets it generate a core supply (1.2V, 1.8V, 3.3V, 5V) or a higher intermediate bus. The 200kHz to 2.2MHz switching range means the inductor and output cap shrink at higher frequencies, but switching losses rise — 1MHz is a common trade-off for a 3.5A rail. Internal synchronous rectification eliminates the external catch diode, saving a component and improving efficiency at light loads. The 3.5A output current is continuous, not peak, so it sustains a 3A load with 0.5A margin for transients.
Package, Footprint, and Thermal — 16-MSOP-EP Layout Notes
The 16-TFSOP (0.118", 3.00mm Width) Exposed Pad package — also called 16-MSOP-EP — has a 0.50mm lead pitch. The TR suffix indicates reel quantities for automated pick-and-place. The MSOP-EP footprint requires a solder-paste stencil with an aperture for the thermal pad — a single large opening, not a grid, to avoid voids.
Active Lifecycle and Compliance — Sourcing Posture
No factory lead-time claim is made here — the quote reflects real channel stock.