LTM4680IY#PBF - Dual 30A or Single 60A µModule Regulator | Analog Devices
MPN: LTM4680IY#PBF ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $65.13 | $65.13 |
| 10 | $61.5 | $615.00 |
| 100 | $58 | $5,800.00 |
| 500 | $54.5 | $27,250.00 |
| 1,000 | $51 | $51,000.00 |
LTM4680IY#PBF Overview
A µModule (micro-module) is a complete power management solution that integrates the DC/DC controller, power transistors, inductors, and compensation components into a single package, offering high efficiency and ease of use. The LTM4680 belongs to the family of digital power system management (PSM) modules, which enable real-time monitoring and control of voltage, current, and temperature via PMBus, enhancing system reliability and energy efficiency.
Key features include PMBus-compliant digital interface for configuration and telemetry, dual 30A or single 60A output capability, wide input voltage range of 4.5V to 16V, and adjustable output voltage from 0.5V to 3.3V. The module achieves high efficiency, reducing power loss in demanding applications. It also includes programmable switching frequency, phase interleaving, and fault protection features such as overvoltage, overcurrent, and overtemperature protection.
Technically, the LTM4680 integrates a high-performance synchronous step-down controller with integrated power MOSFETs and inductors, enabling a compact solution with excellent thermal performance. The BGA-144 package provides a low-inductance interconnect and efficient heat spreading, supporting high current density. The digital interface allows precise voltage margining, sequencing, and monitoring, which is essential for complex multi-rail systems.
Typical applications include high-current FPGA, ASIC, and processor power supplies in telecommunications, data center, and industrial equipment, where precise voltage regulation and monitoring are critical. The module's ability to parallel channels for higher current makes it suitable for powering advanced processors and GPUs.
When designing with the LTM4680, ensure adequate input and output capacitance to maintain stability and meet transient requirements. The PMBus interface requires careful layout to avoid noise coupling, and thermal management should consider the module's power dissipation at high loads.
Drop-in alternatives for LTM4680IY#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 LTM4680IY#PBF (same form factor and footprint) — differing in Output Type, Output Voltage Range, Package, Isolation, Maximum Output Current.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
LTM4680EY#PBF
✅ Drop-In✓ In Stock
$32 / Unit
View Datasheet →LTM4680IY#PBF/NOPB
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
LTM4680IY-XX#PBF
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
LTM4650AIY-1#PBF
⚡ Same Package📋 Reference alternative (not in catalog)
LTM4676IY#PBF
⚡ Same Package✓ In Stock
$27.2 / Unit
View Datasheet →LTM4680IY#PBF Maximum Ratings & Electrical Characteristics
| Output Type | Dual (2 outputs) |
| Output Voltage Range | 0.5 V to 3.3 V per channel |
| Maximum Output Current | 30 A per channel, 60 A single |
| Input Voltage Range | 4.5 V to 16 V |
| Interface | PMBus (I2C-based) |
| Package | BGA-144 |
| Mounting Type | Surface Mount |
| Operating Temperature Range | -40°C to 125°C (internal) |
| RoHS Status | Compliant |
| Number of Outputs | 2 |
| Isolation | Non-Isolated |
| Control Features | Digital Power System Management |
| Protection Features | Overvoltage, Overcurrent, Overtemperature |
LTM4680IY#PBF Pin Configuration
| Pin A1 | VIN — Input supply voltage |
| Pin A2 | VOUT1 — Output 1 voltage |
| Pin A3 | VOUT2 — Output 2 voltage |
| Pin B1 | GND — Ground |
| Pin B2 | SDA — PMBus data line |
| Pin B3 | SCL — PMBus clock line |
| Pin C1 | ALERT — PMBus alert output |
| Pin C2 | RUN — Enable control |
| Pin C3 | SYNC — External clock sync |
| Pin D1 | VOUTS1 — Output 1 sense |
| Pin D2 | VOUTS2 — Output 2 sense |
| Pin D3 | VIN_SENSE — Input voltage sense |
Typical Applications
LTM4680IY#PBF is suitable for 6 applications: FPGA and ASIC Power Supplies, Telecommunications Equipment, Data Center Servers, Industrial Automation, Medical Imaging Systems, Automotive Test Equipment.
FPGA and ASIC Power Supplies
The LTM4680IY#PBF provides high-current, low-voltage rails (0.5V to 3.3V) with PMBus monitoring, ideal for powering FPGAs and ASICs. Its dual 30A outputs can be paralleled for 60A, meeting the demands of high-performance logic devices. The digital interface enables precise voltage margining and sequencing, ensuring reliable operation.
Recommended
Telecommunications Equipment
In telecom systems, the LTM4680IY#PBF powers base stations and network processors with high efficiency and remote monitoring. Its wide input range (4.5V to 16V) accommodates various bus voltages, and PMBus telemetry allows real-time health monitoring, reducing downtime and improving system reliability.
Recommended
Data Center Servers
The LTM4680IY#PBF is ideal for data center servers requiring high-current, low-voltage power for CPUs and GPUs. Its dual 30A outputs can be configured for 60A, and PMBus enables dynamic voltage scaling and power capping, improving energy efficiency. The compact BGA-144 package saves board space in dense server designs.
Recommended
Industrial Automation
In industrial automation, the LTM4680IY#PBF provides robust power for PLCs and motor controllers. Its industrial temperature grade (-40°C to 125°C) ensures reliable operation in harsh environments. PMBus monitoring allows predictive maintenance, and the high efficiency reduces thermal stress in enclosed cabinets.
Recommended
Medical Imaging Systems
The LTM4680IY#PBF powers advanced medical imaging equipment such as MRI and CT scanners, where precise voltage regulation is critical. Its low noise and high efficiency ensure stable operation, and PMBus telemetry enables remote diagnostics. The wide input range and high current capability support demanding imaging processors.
Recommended
Automotive Test Equipment
The LTM4680IY#PBF is used in automotive test systems requiring high-current, programmable power supplies. Its PMBus interface allows automated voltage margining and monitoring, essential for testing ECUs and infotainment systems. The industrial temperature grade ensures reliability in test environments.
Recommended
Recommended Products Summary
Engineering reference data for LTM4680IY#PBF — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | LTM4680EY#PBF | LTM4650AIY-1#PBF | LTM4676IY#PBF |
|---|---|---|---|---|
| Package | BGA-144 | BGA-144 | BGA-144 | BGA-144 |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Output Current (Max) | 60A (single) | 60A (single) | 50A (single) | 26A (single) |
| Input Voltage Range | 4.5V to 16V | 4.5V to 16V | 4.5V to 16V | 4.5V to 17V |
| Output Voltage Range | 0.5V to 3.3V | 0.5V to 3.3V | 0.5V to 3.3V | 0.5V to 3.3V |
| PMBus Interface | Yes | Yes | Yes | Yes |
| Temperature Grade | Industrial (-40°C to 125°C) | Commercial (0°C to 125°C) | Industrial (-40°C to 125°C) | Industrial (-40°C to 125°C) |
| Number of Outputs | 2 | 2 | 2 | 2 |
Key Differentiators
- Higher output current capability (60A) compared to LTM4650AIY-1#PBF (50A) (vs LTM4650AIY-1#PBF)
- Industrial temperature grade (-40°C to 125°C) vs commercial grade of LTM4680EY#PBF (vs LTM4680EY#PBF)
- Dual 30A outputs with PMBus, offering more flexibility than LTM4676IY#PBF's 26A total (vs LTM4676IY#PBF)
Design Notes
Ensure adequate input and output capacitance to handle transient loads. The LTM4680IY#PBF requires low-ESR ceramic capacitors at the input and output to maintain stability and minimize voltage ripple. Refer to the datasheet for recommended capacitor values and placement.
The LTM4680IY#PBF can dissipate significant power at high currents. Use a proper thermal design with adequate PCB copper area and vias to transfer heat away from the BGA-144 package. Consider airflow or heatsinking for applications exceeding 30A per channel.
For PMBus communication, keep SDA and SCL traces short and shielded from noisy power traces. Use pull-up resistors as specified in the datasheet. Place the module close to the load to minimize parasitic inductance and improve transient response.
Compliance Information
RoHS compliant per distributor data. Lead-free version available as LTM4680IY#PBF/NOPB.
