LTM4676
ObsoleteDual 13A or Single 26A μModule (Power Module) Regulator with Digital Power System Management
- Part Models
- 1
- 1ku List Price
- price unavailable
Overview
- Dual, Fast, Analog Loops with Digital Interface for Control and Monitoring
- Wide Input Voltage Range: 4.5V to 26.5V
- Output Voltage Range: 0.5V to 5.4V (4V on VOUT0)
- ±1% Maximum DC Output Error Over Temperature
- ±2.5% Current Readback Accuracy at 10A Load
- 400kHz PMBus-Compliant I2C Serial Interface
- Integrated 16-Bit ΔΣ ADC
- Constant Frequency Current Mode Control
- Parallel and Current Share Multiple Modules
- 16 Slave Addresses; Rail/Global Addressing
- 16mm × 16mm × 5.01mm BGA Package
-
Readable Data:
- Input and Output Voltages, Currents, and Temperatures
- Running Peak Values, Uptime, Faults and Warnings
- Onboard EEPROM Fault Log Record
- Output Voltage, Voltage Sequencing and Margining
- Digital Soft-Start/Stop Ramp
- OV/UV/OT, UVLO, Frequency and Phasing
The LTM4676 is a dual 13A or single 26A step-down uModule® (power module) DC/DC regulator featuring remote configurability and telemetry-monitoring of power management parameters over PMBus— an open standard I2C-based digital interface protocol. The LTM4676 is comprised of fast analog control loops, precision mixedsignal circuitry, EEPROM, power MOSFETs, inductors and supporting components.
The LTM4676’s 2-wire serial interface allows outputs to be margined, tuned and ramped up and down at programmable slew rates with sequencing delay times. Input and output currents and voltages, output power, temperatures, uptime and peak values are readable. Custom configuration of the EEPROM contents is not required. At start-up, output voltages, switching frequency, and channel phase angle assignments can be set by pin-strapping resistors. The LTpowerPlay™ GUI and DC1613 USB-to-PMBus converter and demo kits are available.
The LTM4676 is offered in a 16mm × 16mm × 5.01mm BGA package available with SnPb or RoHS compliant terminal finish.
| Part Number | Turn-on Start-up Time (MAX) (ms) | VIN Range (V) | VOUT Range (V) | Pin-compatible |
| LTM4676 | 170 | 4.5 to 26.5 | 0.5V to 4 (CH0) 0.5 to 5.5 (Both CH) |
Yes |
| LTM4676A | 70 | 4.5 to 17 | 0.5 to 5.5 (Both CH) |
Applications
- System Optimization, Characterization and Data Mining in Prototype, Production and Field Environments
- Telecom, Datacom, and Storage Systems
Suggested Replacement Parts
Dual 13A or Single 26A μModule Regulator with Digital Power System Management
Documentation
Data Sheet 1
User Guide 3
Application Note 6
Design Note 1
Technical Articles 4
Informational 1
Product Information 1
Video 3
Product Selector Card 2
Brochure 1
Device Drivers 1
Webcast 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| LTM4676IY#PBF | 144-Lead BGA (16mm x 16mm x 5.01mm) |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Device Drivers 1
Evaluation Software 0
Can't find the software or driver you need?
Hardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Power System Management (PSM) & Sequencers 1 | ||
| LTC2977 | RECOMMENDED FOR NEW DESIGNS | 8-Channel PMBus Power System Manager Featuring Accurate Output Voltage Measurement |
| Switching Regulators & Controllers 2 | ||
| LTM4620A | PRODUCTION | Dual 13A or Single 26A DC/DC μModule (Power Module) Regulator |
| LTM4630 | RECOMMENDED FOR NEW DESIGNS | Dual 18A or Single 36A DC/DC μModule (Power Module) Regulator |
| Parts | Product Life Cycle | Description |
|---|---|---|
| LTM4675 | RECOMMENDED FOR NEW DESIGNS | Dual 9A or Single 18A μModule Regulator with Digital Power System Management |
| LTM4676A | RECOMMENDED FOR NEW DESIGNS | Dual 13A or Single 26A μModule Regulator with Digital Power System Management |
| LTM4677 | RECOMMENDED FOR NEW DESIGNS | Dual 18A or Single 36A μModule (Power Module) Regulator with Digital Power System Management |
Tools & Simulations
LTspice 7
- LTM4676 Demo Circuit - Single 26A µModule Buck Regulator with Digital Interface for Control & Monitoring (4.5-16V to 1V @ 26A)
- LTM4676/LTM4620A Demo Circuit - High Current, Parallel µModule Buck Regulators with Power System Management (4.5-16V to 1V @100A)
- LTM4676/LTM4630 Demo Circuit - High Current, Parallel µModule Buck Regulators with Power System Management (4.5-16V to 1V @130A)
- LTM4676 Demo Circuit - Poly-Phase µModule Step-Down Regulator with Power System Management (5.75-16V to 1V @ 75A)
- LTM4676 Demo Circuit - Dual 13A µModule Buck Regulator with Digital Interface for Control & Monitoring (4.5-26.5V to 1V @ 13A & 1.8V @ 13A)
- LTM4676 Demo Circuit - High Efficiency, Poly-Phase µModule Step-Down Regulator with Power System Management (5.75-16V to 1V @ 50A)
- LTM4676 Demo Circuit - High Efficiency, Poly-Phase µModule Step-Down Regulator with Power System Management (5.75-16V to 1V @ 100A)
Models for the following parts are available in LTspice:
- LTM4676
- LTM4676A
Linduino 4
LTpowerCAD 5
- LTM4676 Project - 50A PolyPhase Step-Down μModule Regulator (4.5-16V to 1V @ 50A)
- LTM4676 Project - Dual Step-Down μModule Regulator (4.5-14V to 1V @ 13A & 1.8V @ 13A)
- LTM4676 Project - 100A PolyPhase Step-Down μModule Regulator (4.5-16V to 1V @ 100A)
- LTM4676 Project - 26A Step-Down μModule Regulator (4.5-16V to 1.2V @ 26A)
- LTM4676 Project - 75A PolyPhase Step-Down μModule Regulator (4.5-16V to 1V @ 75A)
Design tools for the following parts are available in LTpowerCAD:
- LTM4676
- LTM4676A
LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
Linduino is Analog Devices’ Arduino compatible system for developing and distributing firmware libraries and example code for our integrated circuits. Each Linduino-supported product includes an example main program, defined in the LTSketchbook/Part Number folder and driver code, defined in the LTSketchbook/libraries folder.
Linduino code repository on GitHub and instructions on how to use the code.
LTpowerCAD® is a power supply design program which selects power stage components, provides detailed power efficiency, shows quick loop Bode plot stability and load transient analysis, and can export to LTspice for simulation.
Evaluation Kits
LTM4676 Demo Board | Buck µModule, 4.5V ≤ VIN ≤ 16V, VOUT = 1V @ 26A
Resources
LTM4676 with DC1613A Demo Kit | LTM4676 (DC1811) with USB-to-PMBus Adapter (DC1613A)
Resources
Software
LTM4676 Plug-In Demo Board | 1.5" × 1.2" with Edge Connector, Dual 13A Buck μModule with PMBus, 4.5V ≤ VIN ≤ 26.5V, VOUT0 = 1V @ 13A, VOUT1 = 1.8V @ 13A
Resources
Software
Reference Designs
