LTC3880IUJ#TRPBF | Dual Output PolyPhase DC/DC Controller with PMBus | Digital Power Management

Product Overview

     The LTC3880IUJ#TRPBF is a high-performance dual-output PolyPhase® synchronous step-down DC/DC controller with digital power system management. It integrates precision current mode control loops with PMBus/I²C-compatible serial interface for configuration, telemetry, and fault logging. The device supports programmable output voltage, current limit, switching frequency, sequencing, and margining, enabling fine-tuned power delivery for complex systems. Ideal for modern distributed power architectures where digital monitoring and control are essential.

Key Features

• Dual output synchronous buck controller with PolyPhase® architecture
• PMBus/I²C compatible serial interface for digital power system management
• Programmable output voltage, current limit and switching frequency
• Telemetry of VIN, VOUT, IIN, IOUT, temperature and duty cycle
• Fault logging and advanced fault management
• Output sequencing and margining control
• Phase interleaving for reduced input ripple
• Integrated gate drivers for external N-channel MOSFETs
• Wide input voltage range: 4.5 V to 24 V
• ±0.5 % output voltage accuracy over temperature range
• Compact 40-pin QFN package, –40 °C to +125 °C operating range

Applications

• High-density distributed power systems
• Server, data center and telecom power rails
• FPGA/ASIC/CPU core and memory power supplies
• Industrial automation power systems
• Storage and networking equipment
• Point-of-Load (POL) converters with digital control
• Systems requiring advanced telemetry and fault management

Electrical Characteristics