**LTM4686IV-1#PBF: A High-Performance Dual 9A or Single 18A µModule Regulator with Digital Power System Management**

In the realm of advanced power management, the demand for high-current, high-density, and intelligently controlled voltage regulation solutions continues to escalate. Addressing this need, the **LTM4686IV-1#PBF** from Analog Devices stands out as a premier µModule (micro module) regulator, integrating a complete switching mode power supply with advanced digital management capabilities into a compact, overmolded BGA package.

This innovative regulator is engineered for maximum flexibility and performance. Its most prominent feature is the ability to be configured as **two independent 9A output channels or a single-phase 18A output**, providing system architects with significant design versatility. This dual/single-phase programmability allows it to power high-current ASICs, FPGAs, processors, and complex system-on-chip (SoC) applications efficiently. The module operates over a wide input voltage range of 4.5V to 16V, accommodating common intermediate bus voltages with ease.

Beyond its raw power delivery, the LTM4686 excels with its integrated **Digital Power System Management (DPSM)**. This feature enables real-time telemetry, monitoring, and control of key parameters via the industry-standard PMBus (Part Number SMBus) serial interface. Designers can digitally program and adjust output voltage, margining limits, and current limits with precision. More importantly, the module provides real-time monitoring of **output voltage, output current, temperature, and input power**. This allows for sophisticated fault prediction, system health monitoring, and adaptive control, which are critical for improving system reliability and uptime in data centers, telecommunications infrastructure, and high-end computing.

The µModule packaging is a key advantage, as it incorporates the switching controller, power FETs, inductors, and supporting components into a single 16mm x 16mm x 5.01mm BGA package. This approach **significantly simplifies the PCB layout process**, reduces the overall solution footprint, and minimizes design risks associated with high-frequency power supply layouts. The result is a faster time-to-market and a more reliable, manufacturable power solution.

Furthermore, the LTM4686 supports multiphase parallel operation for scaling output current beyond 18A. By connecting multiple LTM4686 modules in parallel and clocking them out-of-phase, engineers can create a balanced, high-current power rail with reduced input and output ripple, enhancing the overall system's performance.

**ICGOO**DFIND

The LTM4686IV-1#PBF is a superior integration of power density, high-current output, and intelligent digital management, making it an optimal choice for next-generation power systems that demand reliability, flexibility, and precise control.

**Keywords:** Digital Power System Management, µModule Regulator, PMBus, High-Current Output, Multiphase Operation.