LT3492EFE

LED Driver IC Overview

The LT3492EFE is a triple output DC/DC converter designed as a constant-current source for driving high current LEDs. It operates in buck, boost, or buck-boost modes with an input voltage range of 3V to 30V. Each channel features internal switches rated at 600mA and 60V. The device supports adjustable switching frequencies from 330kHz to 2.1MHz and provides up to 3000:1 PWM dimming ratio via True Color PWM technology. It utilizes a fixed frequency, current mode architecture for stable operation across wide supply and output voltage variations.

LED Driver IC Feature Summary

• Triple independent driver channels with built-in gate drivers for external PMOS LED disconnect
• True Color PWM dimming delivering up to 3000:1 dimming ratio on each channel
• Operates in buck, boost, and buck-boost topologies for flexible LED drive configurations
• CTRL pin allows accurate setting of LED current sense threshold over a range of 10mV to 100mV

LED Driver IC Applications

• High current LED lighting systems
• Automotive exterior lighting applications
• General illumination requiring precise color consistency

LED Driver IC Procurement Notes

Verify the specific suffix (e.g., EFE#PBF) against the manufacturer's official datasheet to confirm package type and tape/reel specifications. Ensure the ordered part matches the required operating temperature range and electrical parameters documented in the public component data. Cross-reference ordering information directly with Analog Devices Inc. documentation to avoid discrepancies.

LED Driver IC Selection Notes

Select this component when a triple-channel solution is required for high-power LED arrays. Consider the adjustable frequency range to optimize efficiency and external component size. Verify that the input voltage range and switch ratings align with the target LED string configuration. Evaluate the need for analog dimming via the CTRL pin alongside the primary PWM functionality.

LED Driver IC Part Context

The LT3492 belongs to the LT3492 series of LED drivers from Analog Devices Inc. It is distinct from other Linear Technology products like the LT3478 or LTC3450, which serve different channel counts or application domains such as TFT LCD power supplies. This specific model focuses on multi-channel constant-current regulation for lighting.

LED Driver IC Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.