LTC7131-1
RECOMMENDED FOR NEW DESIGNS25A Monolithic Synchronous DC/DC Step-Down Converter with PMBus Interface
- Part Models
- 1
- 1ku List Price
- Starting From $8.78
Overview
- 4.5V to 20V VIN Range
- 1% Total VOUT Accuracy Over Temperature
- Single Resistor-Programmable Reference Voltage: 0.4V to 3.5V
- PMBus Compliant Serial Interface:
- Programmable Output Voltage Margining: Up to ±25% VOUT 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
The LTC7131-1 is a high efficiency, 25A monolithic synchronous buck regulator using a phase lockable controlled on-time, current mode architecture. The output voltage is programmable with a single external resistor or an external voltage reference through the reference input (REF) pin. The output voltage can be margined up or down up to ±25% with 0.1% resolution via a PMBus-compliant serial interface. The serial interface can also be used to read back fault status and both time-averaged (~4ms) and peak input/output current, input/output voltage and temperature. System configuration and monitoring is supported by the LTpowerPlay® development system.
The architecture provides extremely fast response and allows operation at the very low on-times required to regulate low output voltages at high switching frequencies. The operating frequency is programmable from 250kHz to 2MHz with an external resistor or for noise sensitive applications, it can be synchronized to an external clock over the same range.
APPLICATIONS
- Intelligent Energy Efficient Power Conversion
- ASIC/FPGA/Processor Power
- Point of Load Conversion
Documentation
Data Sheet 1
User Guide 1
Product Selector Card 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 |
|---|---|---|---|
| LTC7131RY-1#PBF | 63-Lead BGA (7.5mm x 6.25mm x 2.22mm) |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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LTspice 1
Models for the following parts are available in LTspice:
- LTC7131-1
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.
Evaluation Kits
LTC7131-1 | 25A Monolithic Synchronous DC/DC Step-Down Converter with PMBus Interface
Resources
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