LTM4700EY#PBF - Dual 50A/100A µModule Regulator | Analog Devices
MPN: LTM4700EY#PBF ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $68.5 | $68.50 |
| 10 | $62.3 | $623.00 |
| 100 | $55.8 | $5,580.00 |
| 500 | $50.2 | $25,100.00 |
| 1,000 | $46.9 | $46,900.00 |
LTM4700EY#PBF Overview
A µModule (micro-module) regulator is a complete DC/DC converter system-in-package that includes the controller, power switches, inductors, and compensation, reducing external component count and design risk. It belongs to the hierarchy: µModule regulator -> power module -> DC/DC converter -> power management IC -> semiconductor. This integration enables compact, high-current point-of-load (PoL) solutions for advanced processors, FPGAs, and ASICs.
Key features include dual 50A or single 100A output capability, input voltage range of 4.5V to 16V, and adjustable output voltage from 0.5V to 1.8V per channel. The device supports PMBus for digital power system management, allowing real-time telemetry of voltage, current, and temperature, as well as configuration of output voltage, sequencing, and fault thresholds. It operates over a 0°C to 125°C internal temperature range (E-grade), with -40°C to 125°C assured by design.
The LTM4700 integrates high-efficiency power stage with low on-resistance MOSFETs and low-loss inductors, achieving high conversion efficiency in a compact BGA package. The digital interface enables precise voltage accuracy and dynamic load response, while the EEPROM stores configuration settings for autonomous startup. The device includes fault protection features such as overcurrent, overvoltage, and overtemperature monitoring.
Typical applications include high-current PoL regulation for FPGAs, ASICs, GPUs, and processors in data centers, networking equipment, and industrial systems. The PMBus interface makes it ideal for systems requiring dynamic voltage scaling, power sequencing, and health monitoring.
When designing with the LTM4700, ensure adequate thermal management due to high output currents. The BGA package requires a multi-layer PCB with thermal vias to dissipate heat effectively. Use the PMBus interface to configure and monitor the regulator for optimal performance.
Drop-in alternatives for LTM4700EY#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 LTM4700EY#PBF (same form factor and footprint) — differing in Output Voltage Range, Package, Output Type, Operating Temperature Range, RoHS Status.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
LTM4700IY#PBF
✅ Drop-In✓ In Stock
$59.7 / Unit
View Datasheet →LTM4700IY
✅ Drop-In📋 Reference alternative (not in catalog)
LTM4700EY
✅ Drop-In📋 Reference alternative (not in catalog)
LTM4650EY#PBF
⚡ Same Package ⚠️ Specs Unverified✓ In Stock
$29 / Unit
View Datasheet →LTM4700MPY#PBF
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$62 / Unit
View Datasheet →LTM4700EY#PBF Maximum Ratings & Electrical Characteristics
| Output Type | Adjustable |
| Output Voltage Range | 0.5 V to 1.8 V per channel |
| Maximum Output Current | 50 A per channel, 100 A single |
| Input Voltage Range | 4.5 V to 16 V |
| Number of Outputs | 2 |
| Control Interface | PMBus (I2C) |
| Operating Temperature Range | 0°C to 125°C (internal) |
| Package | BGA |
| Mounting Type | Surface Mount |
| MSL Level | 4 (72 Hours) |
| RoHS Status | Compliant (ROHS3) |
| REACH Status | Unaffected |
| Features | Digital Power System Management, Telemetry, EEPROM |
LTM4700EY#PBF Pin Configuration
| Pin A1 | VIN — Input voltage |
| Pin B1 | VOUT1 — Output 1 |
| Pin C1 | VOUT2 — Output 2 |
| Pin D1 | GND — Ground |
| Pin E1 | PMBUS — PMBus interface |
| Pin F1 | SDA — I2C data |
| Pin G1 | SCL — I2C clock |
| Pin H1 | ALERT — Alert output |
| Pin J1 | RUN — Enable |
| Pin K1 | FAULT0 — Fault input/output |
| Pin L1 | FAULT1 — Fault input/output |
| Pin M1 | SGND — Signal ground |
Typical Applications
LTM4700EY#PBF is suitable for 6 applications: FPGA Power Supply, ASIC Power Supply, GPU Power Supply, Data Center Server Power, Networking Equipment, Industrial Automation.
FPGA Power Supply
The LTM4700EY#PBF provides dual 50A or single 100A output with adjustable voltage from 0.5V to 1.8V, ideal for powering high-current FPGA cores. Its PMBus interface enables dynamic voltage scaling and telemetry monitoring, ensuring optimal performance and reliability. The integrated inductors and MOSFETs simplify layout and reduce board space, making it suitable for dense FPGA boards.
Recommended
ASIC Power Supply
For ASICs requiring up to 100A, the LTM4700EY#PBF can be configured as a single 100A output. Its wide input range of 4.5V to 16V accommodates various intermediate bus voltages. The digital power system management allows precise voltage regulation and fault monitoring, critical for ASIC reliability. The compact BGA package fits space-constrained designs.
Recommended
GPU Power Supply
The LTM4700EY#PBF delivers high current with low output voltage, ideal for GPU core power. Its PMBus interface supports dynamic voltage scaling, improving energy efficiency. The integrated power stage minimizes parasitic inductance, enhancing transient response. The module's thermal performance is optimized for high-density GPU boards.
Recommended
Data Center Server Power
In data center servers, the LTM4700EY#PBF provides efficient, high-current PoL regulation for processors and memory. Its PMBus telemetry enables real-time power monitoring and management, supporting energy optimization. The module's high efficiency reduces cooling requirements, and its compact size allows for high-density server designs.
Recommended
Networking Equipment
The LTM4700EY#PBF is suitable for networking equipment requiring high-current, low-voltage power for switches and routers. Its PMBus interface allows remote configuration and monitoring, essential for network management. The module's reliability and wide input range make it ideal for 48V telecom systems with intermediate conversion.
Recommended
Industrial Automation
For industrial automation systems, the LTM4700EY#PBF provides robust power delivery with PMBus monitoring for predictive maintenance. Its wide temperature range (0°C to 125°C) suits most industrial environments, and the IY version extends to -40°C for harsh conditions. The module's integrated design reduces failure points, enhancing system reliability.
Recommended
Engineering reference data for LTM4700EY#PBF — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | LTM4700IY#PBF | LTM4700IY | LTM4700EY | LTM4650EY#PBF |
|---|---|---|---|---|---|
| Package | BGA | BGA | BGA | BGA | BGA |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Output Current | 50A per channel, 100A single | 50A per channel, 100A single | 50A per channel, 100A single | 50A per channel, 100A single | 25A per channel, 50A single |
| Input Voltage Range | 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 1.8V | 0.5V to 1.8V | 0.5V to 1.8V | 0.5V to 1.8V | 0.5V to 1.8V |
| Operating Temperature Range | 0°C to 125°C | -40°C to 125°C | -40°C to 125°C | 0°C to 125°C | 0°C to 125°C |
| PMBus Interface | Yes | Yes | Yes | Yes | Yes |
| MSL Level | 4 (72 Hours) | 4 (72 Hours) | 4 (72 Hours) | 4 (72 Hours) | 4 (72 Hours) |
Key Differentiators
- Dual 50A or single 100A output capability (vs LTM4650EY#PBF)
- PMBus digital power system management (vs LTM4650EY#PBF)
- Wide input voltage range of 4.5V to 16V (vs LTM4650EY#PBF)
Design Notes
The LTM4700EY#PBF can dissipate significant power at 100A output. Ensure adequate thermal management by using a multi-layer PCB with thermal vias under the BGA package. The datasheet recommends a minimum of 4 layers with 2oz copper for the power and ground planes. Consider adding a heatsink or forced airflow for high ambient temperature operation.
Place input and output capacitors close to the module pins to minimize parasitic inductance. Use low-ESR ceramic capacitors for high-frequency decoupling. The datasheet provides recommended capacitor values and placement guidelines. Ensure the PCB layout supports high current paths with wide traces and multiple vias.
Do not exceed the maximum input voltage of 16V. Ensure the PMBus address is correctly configured using the address pins. The FAULT pins are open-drain and require pull-up resistors. Minimize capacitance on the address pin to ensure accurate detection. Follow the datasheet's layout guidelines to avoid noise issues.
Compliance Information
ROHS3 compliant, REACH unaffected, MSL 4 (72 hours) per PartGenie.
