LT7171/
LT7171-1

Name: LT7171
Brand: Analog Devices
Price: 10.82 USD
Availability: InStock

RECOMMENDED FOR NEW DESIGNS

20A, 16V, Single- or Dual Phase, Silent Switcher Step-Down Regulators with Digital Power System Management

Data Sheet (Rev. A) Product Selection Table

Part Models: 4
1ku List Price: Starting From $10.82

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Overview

Silent Switcher^® Architecture: Enables a Compact, Efficient, Low EMI Solution
PMBus/I²C Serial Interface
- Telemetry Read Back includes V_OUT, I_OUT, V_IN, Die Temperature, and Faults
- Programmable Voltage, Current Limit, Sequencing, Soft Start and Stop, Undervoltage and Overvoltage, Phase, Frequency (up to 4MHz), and Loop Compensation
- Integrated Three Times Programmable NVM
- Key Parameters Selectable by Resistor

V_OUT Set Point Range: 0.4V to 5.5V
V_OUT Accuracy: ±0.25%, 0.6V ≤ V_OUT ≤ 1.375V
PolyPhase Load Sharing up to Four Devices
Differential Remote V_OUT Sense
Fast Transient Response
Wide V_IN Supply Range: Down to 2.9V or 1.5V with EXTV_CC
Programmable and Synchronizable: 400kHz to 4MHz
30-lead (3.5mm × 4mm) LQFN

Part Models: 4
1ku List Price: Starting From $10.82

Documentation

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
LT7171RV#TRMPBF	30-Lead LCC (3.50 mm x 4.00 mm x 0.95 mm)	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LT7171RV#TRPBF	30-Lead LCC (3.50 mm x 4.00 mm x 0.95 mm)	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LT7171RV-1#TRMPBF	30-Lead LCC (3.50 mm x 4.00 mm x 0.95 mm)	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LT7171RV-1#TRPBF	30-Lead LCC (3.50 mm x 4.00 mm x 0.95 mm)	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Tools & Simulations

LTspice

Models for the following parts are available in LTspice:

LT7171
LT7171-1

LTpowerCAD

Design tools for the following parts are available in LTpowerCAD:

LT7171
LT7171-1

LTpowerPlay®

LTpowerPlay® is a powerful, Windows-based development environment supporting Linear Technology's Digital Power System Management (PSM) products.

Open Tool

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.

Evaluation Kits

LT7171-1 16V PolyPhase Silent Switcher Step-Down Regulator with Digital Power System Management 2xLT7171-1, 40A

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Product Details

Evaluation kit EVAL-LT7171-1-AZ has two dual-phase monolithic DC/DC synchronous step-down regulators with a 2.9V to 16V input range featuring LT^®7171-1. The output can supply up to 40A continuous load current. The Silent Switcher^® structure is incorporated into the LT7171-1 to minimize EMI and reduce PCB layout sensitivity. It also integrates digital power system management functionality, allowing for programmability and telemetry with a PMBus/I2C compliant serial interface. Refer to the LT7171-1 data sheet for more detailed information.

The EVAL-LT7171-1-AZ evaluation board is designed for 1.0V output with a switching frequency set at 1MHz. The controlled on-time valley current-mode control with 25ns typical minimum on-time enables a high switching frequency at a low output voltage with excellent transient response in a small overall solution size. The EVAL-LT7171-1-AZ powers up to default settings and produces power based on the NVM configuration without the need for any serial bus communication. This allows easy evaluation of the DC/DC converter. To fully explore the power system management features of the part, download the GUI software LTpowerPlay^® onto the PC and use ADI’s I²C/SMBus/PMBus dongle DC1613A to connect to the board. LTpowerPlay allows the user to reconfigure the part on the fly, and store the configuration in NVM, view telemetry of voltage, current, temperature, and fault status. The NVM can be programmed up to three times.

The EVAL-LT7171-1-AZ reserves two locations for evaluations, up to a total of four LT7171-1 IC parallel operations. For a detailed parallel configuration, refer to the LT7171-1 data sheet.

GUI Download

The software can be downloaded from LTpowerPlay.

The LT7171-1 data sheet gives a complete description of the part, operation, and application information. The data sheet must be read in conjunction with this demo manual for EVAL-LT7171-1-AZ.

For more details and instructions of the LTpowerPlay, refer to LTpowerPlay GUI for the LT7171-1 Quick Start Guide.

Resources

EVAL-LT7171-1-AZ User Guide: LT7171-1 16V PolyPhase Silent Switcher Step-Down Regulator with Digital Power System Management 2xLT7171-1, 40A (Rev.A)
6/7/2024

LT7171 16V PolyPhase Silent Switcher Step-Down Regulator with Digital Power System Management 2xLT7171, 40A

Buy Now View Details

Product Details

Evaluation kit EVAL-LT7171-AZ has two single-phase monolithic DC/DC synchronous step-down regulators with a 2.9V to 16V input range featuring LT®7171. The output can supply up to 40A continuous load current. The Silent Switcher^® structure is incorporated into the LT7171 to minimize EMI and reduce PCB layout sensitivity. It also integrates digital power system management functionality, allowing for programmability and telemetry with a PMBus/I²C compliant serial interface. Refer to the LT7171 data sheet for more detailed information.

The EVAL-LT7171-AZ evaluation board is designed for 1.0V output with a switching frequency set at 1MHz. The controlled on-time valley current-mode control with 25ns typical minimum on-time enables a high switching frequency at a low output voltage with excellent transient response in a small overall solution size.

The EVAL-LT7171-AZ powers up to default settings and produces power based on the NVM configuration without the need for any serial bus communication. This allows easy evaluation of the DC/DC converter. To fully explore the power system management features of the part, download the GUI software LTpowerPlay^® onto the PC and use ADI’s I²C/SMBus/PMBus dongle DC1613A to connect to the board. LTpowerPlay allows the user to reconfigure the part on the fly, and store the configuration in NVM, view telemetry of voltage, current, temperature, and fault status. The NVM can be programmed up to three times.

The EVAL-LT7171-AZ reserves two locations for evaluations, up to a total of four LT7171 IC parallel operations. For a detailed parallel configuration, refer to the LT7171 data sheet.

GUI Download

The software can be downloaded from LTpowerPlay.

The LT7171 data sheet gives a complete description of the part, operation, and application information. The data sheet must be read in conjunction with this demo manual for EVAL-LT7171-AZ.

For more details and instructions of the LTpowerPlay, refer to LTpowerPlay GUI for the LT7171 Quick Start Guide.