LT3478IFE-1#PBF

LED Driver IC Overview

The LT3478IFE-1#PBF is a monolithic LED driver IC from Analog Devices, housed in a 16-pin TSSOP package. It integrates a high-efficiency boost and buck DC-DC converter capable of delivering up to 4.2 A output current. The device supports an input voltage range of 2.8 V to 36 V and can generate output voltages up to 42 V. It features a programmable switching frequency between 200 kHz and 2.25 MHz. Key functional attributes include true color PWM dimming for accurate color reproduction and integrated open LED protection. The component operates within a temperature range of -40°C to +125°C.

LED Driver IC Feature Summary

• Integrates a high-current boost and buck DC-DC converter topology for flexible LED drive configurations.
• Supports true color pulse-width modulation (PWM) dimming to maintain consistent color points across the dimming range.
• Includes built-in open LED protection circuitry to detect faults and safeguard the system.

LED Driver IC Applications

• High-power single-channel LED lighting systems
• Automotive exterior and interior illumination modules
• Industrial LED backlighting applications

LED Driver IC Procurement Notes

Verify the specific suffix against official Analog Devices documentation to confirm package type and reel specifications. Confirm RoHS compliance status through the manufacturer's latest datasheet or product change notifications. Ensure the selected variant matches the required thermal performance and pinout configuration for the target PCB layout.

LED Driver IC Selection Notes

Select this component when a single-channel driver with both step-up and step-down capabilities is required. The wide input voltage range suits battery-powered or variable supply environments. Consider the 16-TSSOP package for surface-mount assembly constraints. Evaluate the 4.2 A current limit against the specific LED string requirements to ensure adequate headroom.

LED Driver IC Part Context

This part belongs to the LT3478 series of mono LED drivers designed for high-performance lighting. It differs from standard versions by specific internal configurations or packaging options indicated by the suffix. The series targets applications requiring precise current regulation and advanced dimming features in a compact form factor.

LED Driver IC Replacement Considerations

LT3478IFE#PBF is a parameter-equivalent alternative within the same family, differing primarily in packaging format rather than electrical function.