Menu
Close
LTM4686
Ultrathin Dual 10A or Single 20A μModule Regulator with Digital Power System Management
Overview
Features and Benefits
- Dual, Fast, Analog Loops with Digital Interface for Control and Monitoring
- Output Voltage Range: 0.5V to 3.6V
- ±0.5% Maximum DC Output Error Over Temperature
- 10A DC Typical, 12A Peak Output Current, per Channel
- ±5% Current Readback Accuracy at 10A Load
- 400kHz PMBus-Compliant I2C Serial Interface
- Integrated 16-Bit ∆Σ ADC
- Supports Telemetry Polling Rates Up to 125Hz
- Constant Frequency Current Mode Control
- Parallel and Current Share Multiple Modules
- All 7-Bit Slave Addresses Supported
- Drop-In Pin-Compatible to Dual 9A LTM4675 and Dual 13A LTM4676A and Dual 18A LTM4677
- 16mm × 11.9mm × 1.82mm LGA Package
Readable Data:
- Input and Output Voltages, Currents, and Temperatures
- Running Peak Values, Uptime, Faults and Warnings
- Onboard EEPROM Fault Log Record with ECC
Writable Data and Configurable Parameters:
- Output Voltage, Voltage Sequencing and Margining
- Digital Soft-Start/Stop Ramp
- OV/UV/OT, UVLO, Frequency and Phasing
Product Details
The LTM4686 is a dual 10A (12A Peak) or single 20A (24A Peak) step-down µModule® (micromodule) DC/DC regulator with 39ms turn-on time. It features remote configurability and telemetry-monitoring of power management parameters over PMBus—an open standard I2C-based digital interface protocol . The LTM4686 is comprised of fast analog control loops, precision mixed-signal circuitry, EEPROM, power MOSFETs, inductors and supporting components.
The LTM4686’s 2-wire serial interface enables voltage margining and sequencing, and telemetry readback of currents, voltages, power, temperature, uptime and peak values. Pin-strap resistors configure start-up settings. The LTpowerPlay™ GUI, DC1613 USB-to-PMBus converter, DC2086 programming adapter and demo kits are available. Applications running from 5VIN or supplying 5VAUX to SVIN should use LTM4686-1. Otherwise, use LTM4686.
Pb-free and RoHS compliant, the LTM4686 is available in a 16mm × 11.9mm × 1.82mm LGA package.
Applications
- System Optimization in Prototype and Production
Product Lifecycle
Recommended for New Designs
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
Evaluation Kits (1)
Tools & Simulations
LTspice
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.
To launch ready-to-run LTspice demonstration circuits for this part:
Step 1: Download and install LTspice on your computer.
Step 2: Click on the link in the section below to download a demonstration circuit.
Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.
Models for the following parts are available in LTspice:
LTpowerCAD
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.
To open the project file for this circuit:
Step 1: Download and install LTpowerCAD on your computer.
Step 2: Click on the link(s) in the section below to download part-specific project files.
Step 3: If the project file doesn't run, right-click the link and select "Save Target As." Then start the LTpowerCAD tool and open the project file by selecing "Open Project" from the "File" menu.
Design tools for the following parts are available in LTpowerCAD:
Reference Materials
Informational (1)
Solutions Bulletins & Brochures (1)
具电源系统管理功能的超薄型 µModule 稳压器
Ultrathin µModule Regulator with Power System Management
Introducing Analog Device's Fourth Generation µModule Regulators
介绍 Analog Devices 的第 4 代µModule 稳压器
Introducing the LTM4686 Ultrathin Dual 10A µModule® Regulator
Design Resources
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.
PCN-PDN Information
Support & Discussions
LTM4686 Discussions
Sample & Buy
The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.