LTC3783EDHD#PBF

LED Driver IC Overview

The LTC3783EDHD#PBF is a current mode LED driver and boost, flyback, and SEPIC controller from Analog Devices. It drives an N-channel power MOSFET and an N-channel load PWM switch. The device supports input voltages from 3 V to 36 V. Output voltage ranges from 1.23 V to 100 V with an output current of 75 mA. Switching frequency operates between 20 kHz and 1 MHz. Quiescent current is 20 uA. It features analog and PWM dimming capabilities. The component is housed in a 16-DFN (5x4) package.

LED Driver IC Feature Summary

• Supports multiple topologies including boost, flyback, and SEPIC configurations for versatile power management applications.
• Enables precise LED brightness control through both analog and low-frequency PWM dimming methods.
• Integrates current mode control architecture to drive external N-channel power MOSFETs and load switches.

LED Driver IC Applications

• LED lighting systems requiring buck-boost regulation
• Display backlight drivers with dimming requirements
• Industrial indicator circuits using single inductor topologies

LED Driver IC Procurement Notes

Verify the specific suffix #PBF indicates tube packaging when ordering. Confirm that the EDHD variant meets automotive or extended temperature specifications if required by the design. Cross-reference the datasheet revision to ensure compatibility with existing reference designs. Validate pinout alignment for the 16-WFDFN package during PCB layout. Ensure supply chain sources provide authentic components with traceable lot codes.

LED Driver IC Selection Notes

Choose this controller for designs needing a single inductor solution across wide input-output voltage differentials. The integrated current mode control simplifies compensation compared to voltage mode alternatives. Consider the 20 uA quiescent current for battery-powered applications requiring low standby consumption. Evaluate thermal performance within the DFN package for high-current LED loads. Verify that external MOSFET selection aligns with the 1 MHz maximum switching frequency capability.

LED Driver IC Part Context

This part belongs to the LTC3783 family of DC/DC controllers. It serves as a specialized driver for LED strings and isolated power supplies. The device complements other Analog Devices PMIC solutions by offering flexible topology support. It is designed for compact applications where board space is limited due to the single-inductor approach.

LED Driver IC Replacement Considerations

LTC3783IDHD#PBF is listed as a parameter equivalent alternative. Check temperature grade differences between the E and I variants before substitution. Ensure pin-to-pin compatibility remains consistent across the family revisions.