LT3745EUJ-1#PBF

LED Driver IC Overview

The LT3745EUJ-1#PBF is a 16-channel LED driver IC with an integrated buck controller, manufactured by Analog Devices Inc. It operates within a supply voltage range of 6V to 55V and delivers up to 75mA per channel. The device supports PWM dimming and functions at switching frequencies between 200kHz and 1MHz. It features a 36V output capability and is housed in a 40-QFN (6x6) package. The component is designed for surface mount installation and supports an operating temperature range from -40°C to 125°C TJ.

LED Driver IC Feature Summary

• Integrates a 16-channel constant current LED driver with a synchronous buck DC/DC controller
• Supports high-resolution PWM dimming for precise brightness control
• Features internal error amplifier and compensation network for stable regulation

LED Driver IC Applications

• LED backlight systems
• Signage illumination

LED Driver IC Procurement Notes

Verify the specific suffix '-1' against the official Analog Devices datasheet to confirm pinout and functional configuration differences compared to standard variants. Ensure the 40-QFN package dimensions match the PCB footprint requirements. Cross-reference the RoHS compliance status using the manufacturer's latest material declaration documents prior to final procurement approval.

LED Driver IC Selection Notes

Select this component when designing systems requiring independent control of multiple LED channels driven by a single buck converter topology. Consider the 75mA output current limit and 36V maximum output voltage constraints relative to the target LED string configuration. Evaluate the thermal performance of the exposed pad QFN package under expected ambient conditions to ensure reliable operation within the specified temperature range.

LED Driver IC Part Context

This part belongs to the LT3745 family of LED lighting drivers. It shares core architecture with variants like the LT3745IUJ#PBF but may differ in specific electrical characteristics or packaging options defined by the manufacturer. The series is engineered for high-efficiency LED applications where space constraints and multi-channel control are critical design factors.

LED Driver IC Replacement Considerations

LT3745IUJ#PBF

LED Driver IC FAQ

What is the maximum output voltage per channel?

The maximum output voltage is 36V.

Does the device support analog dimming?

The datasheet specifies PWM dimming as the supported method; analog dimming capabilities are not documented for this specific part number.