LTC3787HGN

DC DC Switching Controllers Overview

The LTC3787HGN is a PolyPhase Synchronous Boost Controller manufactured by Analog Devices Inc. It operates with an input voltage range starting down to 2.5V after startup and supports output voltages up to 60V. The device features a ±1% accurate 1.200V reference voltage and supports switching frequencies between 105 kHz and 760 kHz. It offers current sensing via RSENSE or inductor DCR methods and includes control features such as current limit, enable, frequency control, power good, and soft start. The component is housed in a 28-pin SSOP package.

DC DC Switching Controllers Feature Summary

• PolyPhase synchronous boost control architecture for high-efficiency power conversion
• Supports both resistor-based (RSENSE) and inductor DC resistance (DCR) current sensing techniques
• Integrated PMBus interface for digital monitoring and configuration
• Operates from low input voltages down to 2.5V post-startup

DC DC Switching Controllers Applications

• High-power density server and telecom power supplies
• Industrial equipment requiring robust step-up conversion
• Battery-powered systems needing efficient voltage boosting

DC DC Switching Controllers Procurement Notes

Verify the specific suffix 'HGN' indicates the SSOP-28 package variant when ordering. Confirm availability status as supply may be limited or subject to factory special orders. Ensure compatibility with your PCB footprint for the 28-pin SSOP form factor. Check for RoHS compliance documentation if required for your manufacturing standards. Validate that the controller's voltage ratings match your system's maximum operating conditions.

DC DC Switching Controllers Selection Notes

Select this controller for applications requiring precise multi-phase boost regulation with digital management capabilities. The inclusion of PMBus allows for advanced system integration and monitoring. Consider the thermal performance of the SSOP-28 package relative to your heat dissipation strategy. Evaluate whether RSENSE or DCR sensing better suits your inductor selection and cost constraints. Ensure the input voltage range covers your minimum operational requirements below 2.5V.

DC DC Switching Controllers Part Context

The LTC3787 series represents Analog Devices' solution for high-performance polyphase synchronous boost controllers. This family integrates advanced control algorithms to manage multiple phases efficiently. The HGN designation specifically refers to the commercial temperature grade version packaged in a 28-lead SSOP. It is designed to replace older discrete solutions with a highly integrated IC approach.

DC DC Switching Controllers Replacement Considerations

Direct substitutes include other parts within the LTC3787 family with different package options, such as the LTC3787IUFD for QFN packaging. Verify pinout compatibility before swapping packages. Cross-reference with similar polyphase boost controllers from other manufacturers only if functional equivalence is confirmed through detailed datasheet comparison.