Analog Devices LTC7131-1

Description

The LTC®7131-1 is a high efficiency, 25A monolithicsynchronous 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.

Features

• 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

Typical applications

• ASIC/FPGA/Processor Power
• Point of Load Conversion, Intelligent Energy Efficient Power Conversion

More information

• Datasheet
• IC product information