LTC7131-1

RECOMMENDED FOR NEW DESIGNS

25A Monolithic Synchronous DC/DC Step-Down Converter with PMBus Interface

Data Sheet (Rev. A) Product Selection Table

Part Models: 1
1ku List Price: Starting From $6.94

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Part Details

4.5V to 20V V_IN Range
1% Total V_OUT Accuracy Over Temperature
Single Resistor-Programmable Reference Voltage: 0.4V to 3.5V
PMBus Compliant Serial Interface:
- Programmable Output Voltage Margining: Up to ±25% V_OUT Range with 0.1% Resolution
- Read Back of Average and Peak Temperature, Current, and Voltage (25Hz Refresh Rate)
- Fault Status
Phase-Lockable Fixed Frequency Up to 2MHz

Less Than 1ms Power-Up Time
Optional External Reference Input
Pin Selectable Fast-Margining of the Output Voltage
Power Good Flag with Pin Programmable Thresholds and Filter Delay
Differential Remote Output Voltage Sensing
Master Shutdown Mode: 125μA Supply Current
Clock Out for 2-Phase Operation (50A Load)
Available in a Thermally-Enhanced 6.25mm × 7.5mm × 2.22mm BGA Package

Part Models: 1
1ku List Price: Starting From $6.94

Documentation

Data Sheet 1

LTC7131-1: 25A Monolithic Synchronous DC/DC Step-Down Converter with PMBus Interface Data Sheet (Rev.A) 01/31/2022

User Guide 1

DC2824A - Demo Manual (Rev.0) 02/18/2022

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
LTC7131RY-1#PBF	63-Lead BGA (7.5mm x 6.25mm x 2.22mm)	Material Declaration Reliablity Data	Ultra Librarian SamacSys

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

Tools & Simulations

LTspice 1

LTC7131-1 - Step-Down (Buck) Regulators

Models for the following parts are available in LTspice:

LTC7131-1

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

LTC7131-1 | 25A Monolithic Synchronous DC/DC Step-Down Converter with PMBus Interface

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Product Details

Demonstration circuit 2824A-A is a single output buck converter with 4.5V to 20V input voltage range featuring the LTC7131-1, a 25A monolithic synchronous stepdown converter with a PMBus interface. The output voltage is adjustable from 0.4V to 4V and the converter can supply up to 25A of load current.

The DC2824A-A powers up to default settings and produces power based on configuration resistors without the need for any serial bus communication, which allows easy evaluation of the DC/DC converter.

To fully explore the extensive power system management features of the part, download the GUI software LTpowerPlay^® onto your PC and use ADI’s USB-to-PMBus dongle DC1613A to connect to the board.

LTpowerPlay allows users to monitor fault status and real-time telemetry of input and output voltages, input and output current, and internal IC die temperature. Programmable parameters include device address, output voltage, on/off control, and fault response to output overvoltage and output overcurrent.

The LTC7131-1 data sheet gives a complete description of this part, its operation and application information and must be read in conjunction with this quick start guide for DC2824A-A.

Resources

DC2824A - Demo Manual (Rev.0)
2.25 M

DC2824A - Schematic
159.77 K

DC2824A - Design Files
6.48 M

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