LTM4633MPY#PBF

The LTM4633MPY#PBF is a triple-output μModule DC-DC regulator from Analog Devices (Linear Technology lineage). It integrates three buck regulators, their drivers, MOSFETs, control logic, and an inductor into a single compact module, supplying multiple low-voltage rails from one input source. Key features include high efficiency, fast transient response, programmable output voltages, remote sensing, sequencing, and protections (overcurrent/overtemperature/short-circuit). The MPY suffix denotes the package variant, and PBF indicates Pb-free/RoHS-compliant fabrication. Typical applications are multi-rail power delivery for CPUs/GPUs/FPGA boards, ASICs, and other dense electronic systems where space is at a premium. For exact electrical specs (input range, output voltages, current capability), pinout, and application notes, refer to the LTM4633 data sheet and reference designs.

Manufacturer: Linear Technology Corporation (product line now part of Analog Devices, Inc.).
What kind of company: a U.S.-based semiconductor company that designs and manufactures analog and mixed‑signal integrated circuits, including power‑management ICs and µModule (power module) products.

Application areas:
- High‑density point‑of‑load VRMs for CPUs/GPUs in servers, workstations, and HPC.
- Power rails for FPGAs/ASICs in data centers and telecom equipment.
- Multi‑rail supplies in network switches, storage controllers, and edge devices.
- Telecom/datacom and industrial automation gear needing compact, efficient PMBus‑controlled DC‑DC with sequencing and telemetry.

It’s a μModule (power module) in a land‑grid‑array (LGA) package; Pb-free variant (PBF).