LT3466EDD#TRPBF

LED Driver IC Overview

The LT3466EDD#TRPBF is a dual white LED driver and boost converter manufactured by Analog Devices Inc. It operates within an input voltage range of 2.7 V to 24 V, supporting up to 20 series-connected white LEDs per channel. The device features two independent outputs with a maximum output current of 400 mA per channel and a maximum output voltage of 39.5 V. It utilizes a fixed switching frequency of 1 MHz and employs pulse-width modulation for dimming control. The component is housed in a compact 10-WFDFN package measuring 3x3 mm, designed for surface-mount installation across a temperature range of -40°C to +85°C.

LED Driver IC Feature Summary

• Dual independent boost converters enable simultaneous driving of separate LED strings or distinct display sections
• Integrated Schottky diodes eliminate the need for external rectifiers, reducing component count and board space
• Built-in soft-start functionality limits inrush current during startup to protect power sources and LEDs
• Open-circuit protection clamps output voltage to prevent damage in the event of LED string failure

LED Driver IC Applications

• Backlighting for mobile phone displays
• Illumination for digital camera screens
• Power supply for PDA and handheld device sub-displays
• Automotive electronic display backlighting systems

LED Driver IC Procurement Notes

Verify the specific suffix #TRPBF confirms tape-and-reel packaging when sourcing from distributors. Confirm RoHS compliance status matches project requirements, as historical data indicates variations. Ensure the DFN-10 footprint dimensions align with the PCB layout constraints. Cross-reference the manufacturer part number with official Analog Devices documentation to avoid counterfeit components.

LED Driver IC Selection Notes

Select this component when designing circuits requiring dual isolated LED channels from a single wide-voltage input source. The 1 MHz switching frequency allows for smaller passive components compared to lower-frequency alternatives. Consider the 400 mA current limit per channel against the target LED forward current requirements. Evaluate thermal performance within the 3x3 mm package for high-density applications.

LED Driver IC Part Context

This part belongs to the LT3466 family of dual full-function white LED step-up converters. It shares architectural similarities with other Linear Technology (now Analog Devices) LED drivers but is distinguished by its dual-channel capability and integrated Schottky diodes. The device complements single-channel solutions like the LT3467A by providing independent control over two loads.

LED Driver IC Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Designers should consult official Analog Devices resources for direct pin-to-pin replacements or functional equivalents.