LT3922HUFD#PBF

LED Driver IC Overview

The LT3922HUFD#PBF is a synchronous boost LED driver IC from Analog Devices, designed for high-efficiency lighting applications. It operates with an input voltage range of 2.8 V to 36 V and supports a maximum output current of 2 A. The device features an adjustable switching frequency between 200 kHz and 2 MHz, allowing optimization for external component size and efficiency. It provides open LED protection and supports PWM dimming for precise light control. Packaged in a 28-lead QFN (4x5 mm) suitable for surface mount installation, it functions as a DC/DC converter with a single output channel.

LED Driver IC Feature Summary

• Synchronous boost topology for efficient step-up conversion
• Integrated PWM dimming capability for brightness control
• Open LED protection circuitry for system safety
• Adjustable switching frequency for design flexibility

LED Driver IC Applications

• General LED lighting systems
• Display backlighting drivers
• Indicator lighting circuits

LED Driver IC Procurement Notes

Verify the specific suffix #PBF indicates lead-free RoHS compliance when sourcing. Confirm the package type matches the required 28-QFN footprint for PCB layout compatibility. Ensure the supplier provides valid manufacturer traceability documentation. Check for any regional distribution restrictions or obsolescence notices prior to finalizing procurement orders.

LED Driver IC Selection Notes

Select this component for applications requiring a single-channel boost configuration with up to 2 A output current. Consider the 2.8 V to 36 V input range for battery-powered or wide-voltage supply designs. Evaluate the thermal performance within the -40°C to +150°C operating temperature range. Use the DC2247A development kit for initial circuit validation and performance testing before final implementation.

LED Driver IC Part Context

This part belongs to the LT3922 series of synchronous boost LED drivers. It shares functional similarities with other parts in the family but is distinguished by its specific pinout, package style, and electrical ratings. The HUFD#PBF designation specifies the commercial grade temperature range and lead-free packaging variant available from Analog Devices.

LED Driver IC Replacement Considerations

LT3922HUFD#TRPBF

LED Driver IC FAQ

What is the maximum output current rating?

The device supports a maximum output current of 2 A.

Does the IC support analog dimming?

Yes, the LT3922HUFD#PBF supports both analog voltage and PWM dimming methods.