LTM4676IY#PBF - Dual 13A μModule Regulator | Analog Devices
MPN: LTM4676IY#PBF ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $42.5 | $42.50 |
| 10 | $38.25 | $382.50 |
| 100 | $34 | $3,400.00 |
| 500 | $30.6 | $15,300.00 |
| 1,000 | $27.2 | $27,200.00 |
LTM4676IY#PBF Overview
A μModule (micromodule) is a complete power management solution in a single package, combining the DC/DC controller, power stage, inductors, and compensation into one device. This approach reduces design complexity, minimizes external components, and accelerates time-to-market. The LTM4676IY#PBF belongs to the family of digital power system management modules, which allow remote configuration and telemetry monitoring via the PMBus interface, an open standard I2C-based digital protocol. This enables real-time control of output voltages, current limits, and fault thresholds, as well as monitoring of input/output voltages, currents, and temperatures.
Key features include PMBus-compliant digital interface for remote configurability and telemetry, dual 13A or single 26A output capability, wide input voltage range of 4.5V to 26.5V, and adjustable output voltage from 0.5V to 5.4V. The module also features a 40ms turn-on time, which is beneficial for sequencing in multi-rail systems. The BGA package with 144 terminals provides excellent thermal performance, and the operating temperature range of -40°C to +125°C makes it suitable for industrial and automotive applications.
Technically, the LTM4676IY#PBF uses a current-mode control architecture with integrated power MOSFETs and inductors, achieving high efficiency across a wide load range. The digital interface allows precise voltage margining and sequencing, which is critical for powering FPGAs, ASICs, and processors that require multiple supply rails with specific power-up sequences. The module also includes protection features such as overcurrent, overvoltage, and overtemperature shutdown.
Typical applications include high-performance computing, data center servers, networking equipment, and industrial systems where high current density and digital power management are required. The module's ability to deliver 26A in a single output configuration makes it ideal for powering high-end CPUs and GPUs.
When designing with this module, ensure adequate input and output capacitance to handle transient loads and maintain stability. The PMBus interface requires pull-up resistors on the SDA and SCL lines, and proper address configuration to avoid conflicts on the bus.
Drop-in alternatives for LTM4676IY#PBF — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with LTM4676IY#PBF (same form factor and footprint) — differing in Input Voltage Range, Output Voltage Range, Maximum Output Current, Operating Temperature, Package.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
LTM4676AEY#PBF
✅ Drop-In📋 Reference alternative (not in catalog)
LTM4676IY#PBF
✅ Drop-In✓ In Stock
$27.2 / Unit
View Datasheet →LTM4676A
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
LTM4676
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
LTM4630AEY#PBF
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
LTM4630
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
LTM4676IY#PBF Maximum Ratings & Electrical Characteristics
| Output Type | Dual |
| Output Voltage Range | 0.5 V to 5.4 V |
| Maximum Output Current | 13 A per channel, 26 A single |
| Input Voltage Range | 4.5 V to 26.5 V |
| Switching Frequency | Up to 1 MHz |
| Number of Outputs | 2 |
| Package | BGA-144 |
| Terminals | 144 |
| Seated Height | 5.21 mm |
| Operating Temperature | -40°C to +125°C |
| Mounting Type | Surface Mount |
| Control Interface | PMBus |
| Turn-On Time | 40 ms |
| RoHS Status | Compliant |
| Temperature Grade | Automotive |
LTM4676IY#PBF Pin Configuration
| Pin A1 | VIN — Input voltage |
| Pin A2 | VOUT1 — Output 1 |
| Pin A3 | VOUT2 — Output 2 |
| Pin B1 | GND — Ground |
| Pin B2 | SDA — PMBus data |
| Pin B3 | SCL — PMBus clock |
| Pin C1 | RUN — Enable |
| Pin C2 | PGOOD — Power good |
| Pin C3 | VOUT_SENSE — Output sense |
Typical Applications
LTM4676IY#PBF is suitable for 6 applications: High-Performance Computing, Networking Equipment, Industrial Automation, Telecommunications, Data Center Power, Automotive Electronics.
High-Performance Computing
The LTM4676IY#PBF provides dual 13A outputs with digital power management, ideal for powering CPUs, GPUs, and FPGAs in servers and data centers. Its PMBus interface enables precise voltage margining and sequencing, ensuring reliable operation of high-current loads. The wide input range and high efficiency reduce thermal stress in dense computing environments.
Recommended
Networking Equipment
In networking switches and routers, the LTM4676IY#PBF powers high-speed ASICs and line cards with its dual 13A outputs. The PMBus interface allows remote monitoring of power consumption and temperature, enabling proactive management of network infrastructure. Its compact BGA package saves board space in dense line card designs.
Recommended
Industrial Automation
The LTM4676IY#PBF is suitable for industrial control systems requiring multiple voltage rails with precise sequencing. Its wide input voltage range (4.5V to 26.5V) accommodates 24V industrial buses, and the -40°C to +125°C operating range ensures reliability in harsh environments. The PMBus interface enables remote configuration and fault monitoring in automated factories.
Recommended
Telecommunications
In telecom base stations and central offices, the LTM4676IY#PBF provides efficient power conversion for digital signal processors and RF transceivers. Its dual outputs can power separate rails for analog and digital sections, while the PMBus interface allows remote monitoring of power health. The module's high efficiency reduces cooling requirements in outdoor enclosures.
Recommended
Data Center Power
The LTM4676IY#PBF is ideal for data center power distribution, providing high-density, digitally managed power for servers and storage systems. Its PMBus interface enables real-time telemetry for power capping and efficiency optimization. The module's 26A single-output configuration can power high-end processors, while the dual configuration supports multiple rails.
Recommended
Automotive Electronics
With its automotive temperature grade and wide input range, the LTM4676IY#PBF is suitable for automotive power management in infotainment, ADAS, and body control modules. The PMBus interface allows for in-vehicle diagnostics and firmware updates. The module's robust design withstands vibration and temperature extremes.
Recommended
Recommended Products Summary
Engineering reference data for LTM4676IY#PBF — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | LTM4676AEY#PBF | LTM4676A | LTM4630AEY#PBF |
|---|---|---|---|---|
| Package | BGA-144 | BGA-144 | BGA-144 | BGA-144 |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Output Current per Channel | 13A | 13A | 13A | 18A |
| Input Voltage Range | 4.5V to 26.5V | 4.5V to 26.5V | 4.5V to 26.5V | 4.5V to 15V |
| Output Voltage Range | 0.5V to 5.4V | 0.5V to 5.4V | 0.5V to 5.4V | 0.6V to 5.3V |
| Switching Frequency | Up to 1MHz | Up to 1MHz | Up to 1MHz | Up to 1MHz |
| Turn-On Time | Standard | 40ms | 40ms | Standard |
| Operating Temperature | -40°C to +125°C | -40°C to +125°C | -40°C to +125°C | -40°C to +125°C |
Key Differentiators
- Digital power management with PMBus (vs LTM4630AEY#PBF)
- Wide input voltage range (vs LTM4630AEY#PBF)
- Automotive temperature grade (vs LTM4676AEY#PBF)
Design Notes
Place input and output capacitors close to the module pins to minimize parasitic inductance. Use low-ESR ceramic capacitors (e.g., 10µF) for input and output. For high-current applications, multiple capacitors in parallel are recommended to handle ripple current.
The BGA-144 package has a thermal pad on the bottom. Ensure proper thermal vias and a copper pour on the PCB to dissipate heat. For 26A output, consider forced airflow or a heatsink to keep junction temperature within limits.
Keep the PMBus traces (SDA, SCL) short and away from high-current switching nodes to avoid noise. Add pull-up resistors (e.g., 4.7kΩ) to the PMBus lines. Route sense lines as differential pairs to the load for accurate voltage sensing.
Compliance Information
RoHS compliant per distributor data. Automotive temperature grade but not AEC-Q100 qualified.
