LT3758IDD#TRPBF

Overview

The LT3758IDD#TRPBF is a high input voltage switching regulator controller manufactured by Analog Devices Inc. It supports Boost, Flyback, SEPIC, and Inverting topologies within a 10-WFDFN package. The device operates with an input voltage range of 5.5 V to 100 V and features a switch frequency adjustable from 100 kHz to 1 MHz. It provides one output channel with a maximum output current capability of 10 mA and an output voltage of 7.2 V. The static current is specified at 1.75 mA, while the operating supply current is 1.6 mA. Load regulation is rated at -0.4%. The component functions reliably across a temperature range of -40°C to +125°C.

Feature Summary

• Supports multiple DC-DC converter topologies including Boost, Flyback, SEPIC, and Inverting configurations.
• Enables external clock synchronization for precise timing control in power systems.
• Integrates soft-start functionality to manage inrush currents during startup sequences.
• Includes enable pin control for efficient power management and system shutdown capabilities.

Applications

• High voltage boost converter designs
• Flyback transformer-based isolated power supplies
• SEPIC applications requiring wide input voltage ranges
• Negative voltage generation circuits

Procurement Notes

Verify that the ordering suffix matches #TRPBF to ensure the correct reel packaging configuration. Confirm the DFN-10 package variant aligns with your PCB footprint requirements. Check RoHS compliance documentation for environmental standards. Ensure the manufacturer is listed as Analog Devices Inc. or its predecessor Linear Technology. Validate the part status as active before finalizing procurement orders.

Selection Notes

Select this controller when designing systems requiring input voltages up to 100 V. Choose this model for applications needing flexible topology support such as SEPIC or Inverting converters. Consider the 10 mA output drive limit when sizing external MOSFETs. Evaluate the 100 kHz to 1 MHz frequency range against EMI constraints. Verify thermal performance within the -40°C to +125°C operating window.

Part Context

This component belongs to the LT3758 series of high input voltage controllers. It is designed for versatile power conversion tasks where standard regulators cannot handle high input potentials. The IDD suffix indicates the industrial temperature grade version. The TRPBF suffix denotes tape and reel packaging for automated assembly processes.

Replacement Considerations

LT3758AMPMSE#PBF offers similar functionality in an MSOP-10 package with extended temperature range.

FAQ

Does the LT3758IDD#TRPBF include internal synchronous rectification?

No, the datasheet specifies that synchronous rectification is not included in this controller.

What is the maximum input voltage supported by this device?

The device supports a maximum input voltage of 100 V.