LT8722AV#PBF

Overview

The LT8722AV#PBF is a high-performance, single-chip full-bridge DC/DC converter designed for precision power delivery. It features a wide input voltage range of 3.1V to 15V and delivers up to ±4A output current with a maximum output power of 54W. The device integrates a 25-bit DAC for digital voltage control and utilizes Silent Switcher architecture to minimize EMI while maintaining high efficiency, reaching 92.6% at 4A, 15Vin, and 3MHz switching frequency. It operates with a single inductor and includes an SPI interface for configuration.

Feature Summary

• Integrates a 25-bit digital-to-analog converter (DAC) for precise output voltage regulation
• Utilizes Silent Switcher architecture to reduce electromagnetic interference emissions
• Features a serial peripheral interface (SPI) for flexible configuration and status monitoring
• Combines PWM buck and linear power stages to drive the full bridge

Applications

• Driving thermoelectric coolers (TEC) with precise control
• Cooling optical transmitter subassemblies (TOSA)
• Temperature regulation for erbium-doped fiber amplifiers (EDFA)
• Cooling photonic integrated circuits (PIC)
• LiDAR mirror control systems

Procurement Notes

Verify the specific suffix AV#PBF against the manufacturer's official datasheet to confirm package type and temperature grade. Ensure the ordering information matches the exact component designation required for your design. Cross-reference the pinout and electrical specifications with the latest documentation to avoid integration errors.

Selection Notes

Select this component when high-precision bidirectional current control is required for thermal management applications. The integrated 25-bit DAC offers superior resolution compared to standard analog controls. Consider the 3mm x 3mm LQFN package for space-constrained designs requiring efficient heat dissipation and low profile.

Part Context

The LT8722 is part of Analog Devices' Silent Switcher family, focusing on compact, high-efficiency power solutions. It serves as a specialized driver for loads requiring symmetric positive and negative voltage swings, such as TECs. The device simplifies system design by integrating all necessary power switches and control logic into a single monolithic chip.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.