LTM4680EY#PBF - Dual 30A or Single 60A µModule Regulator | Analog Devices
MPN: LTM4680EY#PBF ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $45 | $45.00 |
| 10 | $42 | $420.00 |
| 100 | $38 | $3,800.00 |
| 500 | $35 | $17,500.00 |
| 1,000 | $32 | $32,000.00 |
LTM4680EY#PBF Overview
A µModule regulator is a complete power management solution that combines a DC/DC controller, power MOSFETs, inductor, and compensation circuitry into a single surface-mount package. This integration reduces design complexity, improves reliability, and accelerates time-to-market compared to discrete solutions. The LTM4680 belongs to the family of digital power system management modules, which enable real-time monitoring and control of voltage, current, and temperature via PMBus.
Key features include dual 30A outputs (or single 60A parallel operation), input voltage range of 4.5V to 16V, and output voltage range of 0.5V to 3.3V per channel. The device supports PMBus communication for configuration and telemetry, with 1% output voltage accuracy and integrated current sharing. The BGA-144 package measures 16mm x 16mm, providing excellent thermal performance with a low-profile design.
Technically, the LTM4680 uses a current-mode control architecture with digital loop compensation, enabling stable operation across a wide range of output capacitors. The PMBus interface allows adjustment of output voltage, current limits, and fault thresholds without changing external components. The module includes protection features such as overvoltage, undervoltage, overcurrent, and overtemperature shutdown.
Typical applications include high-current FPGA, ASIC, and processor power supplies in networking, data center, and industrial systems. The dual-output configuration is ideal for powering core and I/O rails simultaneously, while the single 60A mode supports high-current loads. The digital management capability is valuable in systems requiring dynamic voltage scaling or precise power sequencing.
When designing with the LTM4680, ensure adequate input and output capacitance for stability and transient response. The PMBus interface requires pull-up resistors on the SDA and SCL lines. Thermal management is critical at high currents; use a proper PCB layout with thermal vias to maximize heat dissipation.
Drop-in alternatives for LTM4680EY#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 LTM4680EY#PBF (same form factor and footprint) — differing in Output Type, Output Voltage Range, Package, Maximum Output Current, Operating Temperature Range.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
LTM4680IY#PBF
✅ Drop-In✓ In Stock
$51 / Unit
View Datasheet →LTM4680HY#PBF
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
LTM4680MPY#PBF
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$29 / Unit
View Datasheet →LTM4630AEY#PBF
✅ Drop-In📋 Reference alternative (not in catalog)
LTM4700EY#PBF
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$46.9 / Unit
View Datasheet →LTM4680EY#PBF Maximum Ratings & Electrical Characteristics
| Output Type | Adjustable |
| Number of Outputs | 2 |
| Output Voltage Range | 0.5 V to 3.3 V |
| Output Current per Channel | 30 A |
| Maximum Output Current (Parallel) | 60 A |
| Input Voltage Range | 4.5 V to 16 V |
| Control Interface | PMBus (I2C) |
| Package | BGA-144 |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +125C |
| RoHS Status | Compliant |
LTM4680EY#PBF Pin Configuration
| Pin A1 | VIN — Input supply voltage |
| Pin A2 | VOUT0 — Channel 0 output voltage |
| Pin A3 | VOUT1 — Channel 1 output 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 | RUN0 — Channel 0 enable |
| Pin C3 | RUN1 — Channel 1 enable |
| Pin D1 | VOSNS0 — Channel 0 output sense |
| Pin D2 | VOSNS1 — Channel 1 output sense |
| Pin D3 | VTRIM0 — Channel 0 trim |
Typical Applications
LTM4680EY#PBF is suitable for 6 applications: FPGA Power Supply, ASIC Power Supply, Data Center Server Power, Networking Equipment, Industrial Automation, Telecom Base Station.
FPGA Power Supply
The LTM4680EY#PBF provides dual 30A outputs with PMBus management, ideal for powering FPGA core and I/O rails. Its wide input range (4.5V-16V) accommodates various intermediate bus voltages, while the digital interface enables precise voltage margining and telemetry for high-performance FPGAs. The integrated inductor and power switches simplify layout and reduce board space, critical for dense FPGA boards.
Recommended
ASIC Power Supply
ASICs in networking and data center equipment require high-current, low-voltage rails with precise regulation. The LTM4680EY#PBF delivers up to 60A in parallel mode, with output voltages from 0.5V to 3.3V. The PMBus interface allows dynamic voltage scaling and fault monitoring, essential for ASIC power management. The module's high efficiency reduces thermal stress in dense systems.
Recommended
Data Center Server Power
In data center servers, the LTM4680EY#PBF powers CPU and memory rails with high efficiency and digital control. Its dual 30A outputs can supply separate rails for core and I/O, while PMBus enables real-time power monitoring for energy management. The compact BGA-144 package fits in tight server layouts, and the wide input range supports 12V bus architectures.
Recommended
Networking Equipment
Networking switches and routers require reliable, high-current power for line cards and processors. The LTM4680EY#PBF provides dual 30A outputs with PMBus management, enabling remote monitoring and control in telecom environments. Its wide input range (4.5V-16V) accommodates various power architectures, and the integrated design reduces component count and improves MTBF.
Recommended
Industrial Automation
Industrial automation systems need robust power supplies with wide temperature ranges and digital control. The LTM4680EY#PBF operates from -40C to +125C, making it suitable for harsh environments. Its PMBus interface allows configuration and monitoring in PLCs and motor controllers. The module's high efficiency reduces heat dissipation in sealed enclosures.
Recommended
Telecom Base Station
Telecom base stations require high-current, reliable power for digital signal processors and RF transceivers. The LTM4680EY#PBF delivers dual 30A outputs with PMBus management, enabling remote power monitoring and control. Its wide input range supports 12V and 48V bus systems, and the compact package simplifies board design in space-constrained equipment.
Recommended
Recommended Products Summary
Engineering reference data for LTM4680EY#PBF — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | LTM4680IY#PBF | LTM4680HY#PBF | LTM4680MPY#PBF | LTM4630AEY#PBF | LTM4700EY#PBF |
|---|---|---|---|---|---|---|
| Package | BGA-144 | BGA-144 | BGA-144 | BGA-144 | BGA-144 | BGA-144 |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Output Current (per channel) | 30 A | 30 A | 30 A | 30 A | 18 A | 50 A |
| Maximum Output Current (Parallel) | 60 A | 60 A | 60 A | 60 A | 36 A | 100 A |
| Input Voltage Range | 4.5V to 16V | 4.5V to 16V | 4.5V to 16V | 4.5V to 16V | 4.5V to 16V | 4.5V to 16V |
| Output Voltage Range | 0.5V to 3.3V | 0.5V to 3.3V | 0.5V to 3.3V | 0.5V to 3.3V | 0.6V to 5.5V | 0.5V to 3.3V |
| Temperature Grade | Extended (-40C to +125C) | Industrial (-40C to +125C) | High (-40C to +150C) | Military (-55C to +125C) | Extended (-40C to +125C) | Extended (-40C to +125C) |
| PMBus Interface | Yes | Yes | Yes | Yes | Yes | Yes |
Key Differentiators
- Dual 30A or single 60A output capability (vs LTM4630AEY#PBF)
- PMBus digital power system management (vs LTM4630AEY#PBF)
- Wide temperature grade options (vs LTM4680EY#PBF)
Design Notes
At 60A output, the LTM4680EY#PBF can dissipate significant power. Ensure adequate PCB copper area and thermal vias under the BGA-144 package to keep the junction temperature within limits. The datasheet provides thermal derating curves; use them to determine maximum ambient temperature for your application.
Place input and output capacitors close to the module pins to minimize parasitic inductance. Use low-ESR ceramic capacitors for high-frequency decoupling. The PMBus lines (SDA, SCL) require pull-up resistors to the logic supply; typical values are 2.2kΩ to 10kΩ depending on bus capacitance.
Do not exceed the absolute maximum input voltage of 16V. Ensure the PMBus address is set correctly to avoid conflicts on the bus. When paralleling channels for 60A operation, follow the datasheet's configuration guidelines to ensure proper current sharing. Use the RUN pins for proper power sequencing in multi-rail systems.
Compliance Information
RoHS compliant per 'PBF' suffix. Other compliance data not specified in provided sources.
