LT3799EMSE#PBF

LED Driver IC Overview

The LT3799EMSE#PBF is an isolated flyback controller with active power factor correction, designed for driving LEDs. It operates in critical conduction mode to optimize efficiency and reduce electromagnetic interference. The device features a switching frequency of 300 kHz and supports a maximum output voltage of 10 V. It functions within a temperature range of -40°C to +125°C and draws a typical operating supply current of 70 µA at 18 V. Packaged in a 16-lead MSOP with an exposed pad, it provides rise and fall times of 20 ns.

LED Driver IC Feature Summary

• Integrates active power factor correction with isolated flyback control for LED applications
• Operates in critical conduction mode to minimize electromagnetic interference
• Supports adjustable output current for flexible LED driver designs

LED Driver IC Applications

• Offline isolated LED lighting systems
• High-efficiency AC-DC LED drivers
• Power factor corrected LED ballasts

LED Driver IC Procurement Notes

Verify component authenticity through authorized Analog Devices distributors or certified partners. Confirm the presence of the #PBF suffix indicates lead-free compliance and RoHS adherence. Check datasheet revisions for any updates to electrical characteristics or recommended operating conditions prior to integration into final designs.

LED Driver IC Selection Notes

Select this component for applications requiring integrated PFC and isolation in a compact form factor. Ensure the input voltage range and transformer design align with the critical conduction mode operation. Consider thermal management requirements due to the MSOP package and high-temperature rating when designing the PCB layout.

LED Driver IC Part Context

This part belongs to the LT3799 series of offline LED controllers from Analog Devices. It combines flyback topology with active PFC, distinguishing it from standard flyback controllers that require external PFC stages. The EMSE variant specifies the MSOP-16 package with an exposed thermal pad for improved heat dissipation.

LED Driver IC Replacement Considerations

LT3798EMSE#PBF offers similar functionality but may differ in specific control loop parameters or pinout compatibility. Verify electrical equivalence and mechanical fit before substitution.