LTM4633MPY

LTM4633MPY is a triple-output μModule DC-DC regulator from Analog Devices (Linear Technology family). It packs three high‑current buck regulators, control logic, and passive components into a single compact module. A common input feeds three independently programmable outputs (V1, V2, V3), ideal for multi‑rail power architectures. It supports PMBus/I2C for setup and telemetry (voltage, current, temperature, faults) and includes protections such as overcurrent and over‑temperature with fault reporting. Key benefits include high efficiency, fast transient response, remote sensing options, and simplified board integration due to its self-contained package. It’s well suited for powering core rails in FPGAs, CPUs, ASICs, and other high‑performance digital systems, reducing BOM and layout complexity.

There is no single exact, pin‑for‑pin equivalent to Analog Devices’ LTM4633MPY. Closest alternatives are other μModule DC‑DC regulators with the same VIN/VOUT range, current rating and footprint—e.g., other ADI LTM family modules, TI’s TPSM power‑module series, and Murata/RECOM DC‑DC power modules. Use a parametric search (VIN, VOUT, IOUT, footprint, switching frequency) to find the best match.

- Pin count: 28 pins (LGA/MPY package).
- Function: PMBus-enabled triple-output multiphase synchronous buck regulator power module. Integrates controller, high-side/low-side MOSFETs and drivers to generate three regulated rails from a common input, with PMBus/SMBus interface for voltage, enable, monitoring and fault reporting.

Analog Devices, Inc. (the company that now owns Linear Technology). ADI is a multinational semiconductor company that designs and manufactures analog, mixed-signal, and digital signal processing integrated circuits for various industries (industrial, automotive, communications, consumer).

Applications of LTM4633MPY include:
- High-density multi-rail power for processors and accelerators (CPUs/GPUs/FPGA/ASIC)
- Point-of-load regulators on servers, blade systems, motherboards, and storage controllers
- Telecom and networking gear needing several tightly regulated rails with fast transient response
- Industrial automation and embedded systems requiring robust, compact DC-DC solutions
- AI/HPC boards and data-center infrastructure
- Medical imaging and instrumentation requiring clean, stable power rails
The module provides multiple regulated outputs from a single package with digital control/monitoring for sequencing, protection, and telemetry.

The LTM4633MPY is supplied in Analog Devices’ thermally-enhanced 48-ball BGA (MP) package. The “Y” suffix denotes a RoHS‑compliant/lead‑free finish. Check the ADI datasheet for exact ball map and dimensions.