LT3796HFE

LED Driver IC Overview

The LT3796HFE is a high-voltage DC/DC controller designed for constant current and constant voltage regulation, primarily suited for driving high-brightness LEDs. It features a wide input voltage range of 6V to 100V and supports multiple topologies including boost, buck, buck-boost, SEPIC, and flyback. The device utilizes an external N-channel MOSFET and offers True Color PWM dimming with a 3000:1 ratio, alongside 10:1 analog dimming via the CTRL pin. Operating frequencies are adjustable from 100kHz to 1MHz, enabling efficiency exceeding 94% in boost mode. It includes dual current detection amplifiers, programmable UVLO, and fault restart timers within a 28-lead TSSOP package.

LED Driver IC Feature Summary

• Supports high-side current sensing for versatile topology implementation
• Provides True Color PWM dimming for consistent LED color temperature
• Integrates dual current detection amplifiers for input and output monitoring
• Features programmable frequency synchronization and fault protection mechanisms

LED Driver IC Applications

• High-power LED lighting systems
• Automotive illumination applications
• Industrial lighting fixtures
• Battery and supercapacitor charging circuits

LED Driver IC Procurement Notes

Verify the specific suffix (e.g., HFE vs IFE) against datasheet specifications to ensure correct temperature rating and performance grade. Confirm package type and reel/tube configuration requirements during sourcing. Cross-reference manufacturer part numbers with authorized distributor catalogs to avoid counterfeit components. Ensure compatibility with system thermal management requirements given the power dissipation characteristics.

LED Driver IC Selection Notes

Select this component when designing systems requiring wide input voltage ranges up to 100V. Consider its suitability for applications demanding precise LED color consistency through PWM dimming. Evaluate the need for high-side current sensing capabilities for complex power topologies. Assess thermal performance needs relative to the TSSOP-EP package's heat dissipation properties.

LED Driver IC Part Context

This component belongs to the LT3796 family of high-voltage DC/DC controllers manufactured by Analog Devices Inc. The 'H' suffix typically denotes a specific temperature grade or performance variant within the series. These devices are engineered for robust operation in demanding environments, offering reliable regulation for critical power conversion tasks.

LED Driver IC Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Users should consult official manufacturer resources for qualified alternatives.