LTC3887IUJ-1

DC DC Switching Controllers Overview

The LTC3887IUJ-1#PBF is a dual-phase synchronous buck switching controller from Analog Devices, housed in a 40-WFQFN (6x6 mm) package with an exposed thermal pad. It operates within a supply voltage range of 4.5V to 24V and supports a programmable switching frequency between 250 kHz and 1 MHz. The controller delivers up to 30A output current with adjustable output voltages ranging from 500 mV to 5.5 V. Key interfaces include I2C and PMBus for digital power management. It features soft-start, shutdown control, and phase-shift capabilities, operating reliably across a temperature range of -40°C to +125°C TJ.

DC DC Switching Controllers Feature Summary

• Integrates dual-channel synchronous buck control with PolyPhase technology for load balancing
• Supports digital communication via I2C and PMBus interfaces for system monitoring
• Includes built-in protection mechanisms such as thermal overload and short-circuit protection

DC DC Switching Controllers Applications

• High-density point-of-load (POL) converters for server and data center applications
• Digital power management systems requiring remote configuration and telemetry
• Telecommunications infrastructure equipment needing wide input voltage ranges

DC DC Switching Controllers Procurement Notes

Verify the complete part number including suffixes such as #PBF or #WPBF, as these indicate specific packaging or tape-and-reel configurations that may affect availability and handling. Confirm RoHS compliance status through official datasheets. Ensure the supplier provides traceability documentation matching Analog Devices specifications. Cross-reference the manufacturer part number against authorized distributor catalogs to avoid counterfeit components. Validate that the requested variant matches the required thermal and electrical performance criteria for your specific design.

DC DC Switching Controllers Selection Notes

Select this component when designing multi-phase DC/DC converters requiring precise current sharing and digital control. The wide input voltage range suits applications with varying bus voltages. Consider the 40-QFN package for compact PCB layouts and efficient heat dissipation. Evaluate the need for PMBus integration if system-level monitoring is required. Compare switching frequency options against EMI constraints and efficiency targets. Ensure the output current capability aligns with peak load requirements while accounting for thermal derating at high ambient temperatures.

DC DC Switching Controllers Part Context

The LTC3887 belongs to Analog Devices' PolyPhase family of switching controllers, designed for high-efficiency, high-current applications. It complements other models like the LTC3880 and LTC3887-1 by offering dual-phase control with enhanced digital interface support. This series is commonly used in enterprise computing and industrial power supplies where reliability and dynamic response are critical. The IUJ-1 variant specifically denotes the industrial temperature grade and standard tube packaging.

DC DC Switching Controllers Replacement Considerations

Direct substitutes include the LTC3887EUJ-1#PBF for commercial temperature range applications. For single-phase designs, consider the LTC3880 series. Verify pinout compatibility and thermal performance before swapping. Check if the alternative supports the same PMBus commands and fault reporting structures.