LT1737CGN#TRPBF

Overview

The LT1737CGN#TRPBF is a monolithic switching regulator controller designed for high-power isolated flyback topologies. It drives the gate of an external MOSFET to regulate output voltage. The device operates within a switching frequency range of 50 kHz to 250 kHz and supports a maximum output current of 500 mA. It features a shutdown function and consumes a typical operating supply current of 10 mA. The component is housed in a 16-lead SSOP package and is rated for operation between 0°C and +100°C, with a power dissipation capability suitable for compact designs.

Feature Summary

• Monolithic design specifically optimized for isolated flyback converter applications
• Integrated driver capable of controlling external MOSFET gates for step-up or step-down regulation
• Includes shutdown functionality to minimize power consumption during standby modes

Applications

• High-power isolated DC-DC conversion systems
• Flyback topology power supplies requiring galvanic isolation
• Industrial control equipment power modules
• Telecommunications infrastructure power distribution

Procurement Notes

Verify the specific suffix #TRPBF indicates tape-and-reel packaging when sourcing. Confirm the manufacturer designation as Analog Devices Inc., noting the historical Linear Technology lineage. Ensure the SSOP-16 package matches your PCB footprint requirements. Check for any recent Product Change Notifications regarding manufacturing site updates or material composition changes before finalizing procurement orders.

Selection Notes

Select this controller when designing isolated flyback converters requiring high power density and precise regulation. It is suitable for applications needing a wide switching frequency range to optimize transformer size and efficiency. Consider the 500 mA output current limit and 10 mA supply current for thermal management planning. Ensure the external MOSFET selection complements the gate drive capabilities provided by this IC for reliable switching performance.

Part Context

This component belongs to the LT1737 series of switching regulators from Analog Devices. It represents a specialized solution for isolated power conversion, distinct from non-isolated buck or boost controllers. The part integrates essential control logic and gate driving functions into a single chip, simplifying the design of robust flyback power supplies compared to discrete solutions.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing circuit designs if considering alternative flyback controllers from other manufacturers.