LTM4675
RECOMMENDED FOR NEW DESIGNSDual 9A or Single 18A μModule Regulator with Digital Power System Management
- Part Models
- 3
- 1ku List Price
- Starting From $35.74
Overview
- Dual, Fast, Analog Loops with Digital Interface for Control and Monitoring
- Wide Input Voltage Range: 4.5V to 17V
- Output Voltage Range: 0.5V to 5.5V
- ±0.5% Maximum DC Output Error Over Temperature
- ±2.5% Current Readback Accuracy at 9A 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 13A LTM4676A and Dual 18A LTM4677
- 16mm × 11.9mm × 3.51mm BGA 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
The LTM4675 is a dual 9A or single 18A step-down μModule® (micromodule) DC/DC regulator with 40ms 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 LTM4675 is comprised of fast analog control loops, precision mixed-signal circuitry, EEPROM, power MOSFETs, inductors and supporting components.
The LTM4675’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 LTM4675 is offered in a 16mm × 11.9mm × 3.51mm BGA package available with SnPb or RoHS compliant terminal finish.
APPLICATIONS
- System Optimization in Prototype and Production
Documentation
Data Sheet 1
User Guide 2
Application Note 7
Design Note 1
Technical Articles 1
Informational 1
Product Selector Card 3
Brochure 2
Device Drivers 1
Analog Dialogue 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 |
|---|---|---|---|
| LTM4675EY#PBF | 108-Lead BGA (16mm x 11.9mm x 3.51mm) | ||
| LTM4675IY | 108-Lead BGA (16mm x 11.9mm x 3.51mm) | ||
| LTM4675IY#PBF | 108-Lead BGA (16mm x 11.9mm x 3.51mm) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Aug 20, 2021 - 20_0311 Supplier Material Change for µModule |
||
| LTM4675EY#PBF | PRODUCTION | |
| LTM4675IY | PRODUCTION | |
| LTM4675IY#PBF | PRODUCTION | |
|
Jul 21, 2021 - 21_0159 Ink Mark to Laser Mark Conversion for µModule |
||
| LTM4675EY#PBF | PRODUCTION | |
| LTM4675IY | PRODUCTION | |
| LTM4675IY#PBF | PRODUCTION | |
|
Feb 28, 2020 - 20_0123 Micro-Module, Test Site Transfer from Analog Devices Singapore to Analog Devices Penang, Malaysia |
||
| LTM4675EY#PBF | PRODUCTION | |
| LTM4675IY | PRODUCTION | |
| LTM4675IY#PBF | PRODUCTION | |
|
Feb 5, 2020 - 20_0127 Supplier Material Change for µModule |
||
| LTM4675EY#PBF | PRODUCTION | |
| LTM4675IY | PRODUCTION | |
| LTM4675IY#PBF | PRODUCTION | |
|
Jul 25, 2019 - 19_0175 Notification of Qualification of New Mold Compound for the LTM4675 µModule Regulator |
||
| LTM4675EY#PBF | PRODUCTION | |
| LTM4675IY | PRODUCTION | |
| LTM4675IY#PBF | PRODUCTION | |
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 | ||
| LTC2975 | RECOMMENDED FOR NEW DESIGNS | 4-Channel PMBus Power System Manager Featuring Accurate Input Current and Energy Measurement |
Tools & Simulations
LTspice 2
- LTM4675 Demo Circuit - Dual Output µModule Buck Regulator with Digital Interface (4.5-17V to 1V & 1.8V @ 9A)
- LTM4675 Demo Circuit - Paralleled µModule Buck Regulator with Digital Interface (10-14V to 1V @ 72A)
Models for the following parts are available in LTspice:
- LTM4675
Linduino 2
LTpowerCAD 1
Design tools for the following parts are available in LTpowerCAD:
- LTM4675
LTpowerPlay®
LTpowerPlay® is a powerful, Windows-based development environment supporting Linear Technology's Digital Power System Management (PSM) products.
Open ToolLTspice® 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.
