LT3752EFE-1

Overview

The LT3752EFE-1#PBF is a current mode PWM controller optimized for active clamp forward converter topologies, manufactured by Analog Devices Inc. It operates within a switching frequency range of 100 kHz to 500 kHz and supports a maximum duty cycle of 95%. The device features an integrated DC/DC housekeeping controller and provides a single output with a voltage of 10 V and current capability of 10 mA. Designed for surface mount installation in a TSSOP-38 package, it functions reliably across an extended temperature range from -40°C to +125°C. The component draws a typical operating supply current of 7.5 mA and includes shutdown functionality for power management efficiency.

Feature Summary

• Optimized for active clamp forward converter topology with current mode PWM control
• Integrated DC/DC housekeeping controller for internal power regulation
• Supports isolation capable output step-up and step-down conversion

Applications

• Active clamp forward power supply designs
• Isolated DC/DC conversion systems
• Industrial power management applications requiring housekeeping power

Procurement Notes

Verify the specific suffix #PBF indicates tube packaging when reviewing distributor listings. Confirm that the part number matches the exact LT3752EFE-1 variant rather than the standard LT3752EFE or tape-and-reel LT3752EFE-1#TRPBF. Ensure compatibility with development kits such as DC1994A, DC1929A, or DC2175A if evaluation is required. Check regional availability restrictions as some distributors may limit sales in certain locations.

Selection Notes

Select this component when designing active clamp forward converters requiring integrated housekeeping power. The fixed 10 V output of the internal regulator simplifies biasing circuits compared to discrete solutions. Consider the TSSOP-38 thermal performance for high-power applications. Verify that the 100 kHz to 500 kHz frequency range aligns with transformer design constraints. Ensure the 95% maximum duty cycle meets the input-to-output voltage ratio requirements of the target application.

Part Context

The LT3752EFE-1 belongs to the LT3752 series of switching controllers under Analog Devices' PMIC portfolio. It is specifically engineered for forward converter applications where active clamping improves efficiency and reduces switch stress. The inclusion of a dedicated housekeeping controller distinguishes it from basic PWM controllers, offering a compact solution for isolated power supplies. This part complements other variants like the LT3752-1 which may differ in pinout or feature sets.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Evaluate the LT3752EFE (non-1 version) only if functional differences in the housekeeping controller or pin configuration are acceptable. No direct cross-reference data is provided for alternative manufacturers.