LT3758AIDD#TRPBF

Overview

The LT3758AIDD#TRPBF is a high input voltage switching controller manufactured by Analog Devices Inc., designed for versatile power conversion topologies including boost, flyback, SEPIC, and inverting configurations. It operates within an input voltage range of 5.5 V to 100 V and supports a programmable switching frequency from 100 kHz to 1 MHz. The device features a DFN-10 package with surface mount installation, offering a maximum output current capability of 10 mA at a fixed output voltage of 7.2 V. It exhibits a static current of 1.75 mA and maintains a load regulation of -0.4%. The component functions reliably across an extended temperature range from -40°C to +125°C, providing robust performance for industrial applications requiring high-voltage interface capabilities.

Feature Summary

• Supports multiple converter topologies including boost, flyback, SEPIC, and inverting configurations
• Enables operation with high input voltages up to 100 V
• Features programmable switching frequency control ranging from 100 kHz to 1 MHz
• Includes shutdown functionality and soft-start capabilities for controlled power management

Applications

• Industrial power supply systems requiring high input voltage interfaces
• Battery-powered equipment utilizing boost or SEPIC architectures
• Isolated power converters employing flyback topologies
• Negative voltage generation circuits using inverting configurations

Procurement Notes

Verify the specific suffix TRPBF indicates tape and reel packaging when sourcing components. Confirm that the A-grade variant meets the required thermal and electrical specifications for your application environment. Ensure compatibility with the intended DFN-10 footprint during PCB layout design. Cross-reference the datasheet for any recent product change notices affecting pinout or electrical characteristics before finalizing procurement orders.

Selection Notes

Select this controller when designing systems necessitating high input voltage tolerance up to 100 V. Consider the DFN-10 package for compact surface-mount implementations requiring efficient thermal dissipation. Evaluate the 100 kHz to 1 MHz frequency range against electromagnetic interference constraints and efficiency requirements. Verify that the 1.75 mA static current aligns with standby power limitations in battery-operated devices.

Part Context

The LT3758 series represents Analog Devices' solution for high-voltage DC-DC conversion challenges. This specific part belongs to the broader LT3758 family, sharing core architectural features while differing in package options and grade specifications. The IDD suffix denotes a specific commercial grade variant housed in a DFN package, distinguishing it from other form factors like MSOP available within the same functional family.

Replacement Considerations

LT3758AIDD#PBF serves as a tube-packaged alternative to the TRPBF version, maintaining identical electrical characteristics and functionality. Both variants share the same DFN-10 footprint and pinout configuration, allowing for direct substitution based on manufacturing assembly preferences without redesigning the printed circuit board.