LTC3220IPF#PBF

LED Driver IC Overview

The LTC3220IPF#PBF is a highly integrated multi-display LED driver featuring eighteen 20mA universal current sources. It incorporates a high-efficiency, low-noise charge pump with automatic mode switching (1x, 1.5x, 2x) to optimize efficiency. The device operates on an input voltage range of 2.9V to 5.5V and utilizes a 2-wire I²C serial interface for independent control of each channel. Key capabilities include 6-bit linear DACs for brightness adjustment, as well as independent on/off, blinking, and gradation controls. The component is housed in a 28-pin UTQFN package.

LED Driver IC Feature Summary

• Integrates eighteen 20mA universal current sources with independent per-channel control via I²C interface
• Features a high-efficiency, low-noise charge pump that automatically switches between 1x, 1.5x, and 2x modes based on dropout conditions
• Provides 6-bit linear digital-to-analog converters for precise brightness level adjustment across all channels

LED Driver IC Applications

• Multi-display LED lighting systems
• LED backlight drivers for portable devices
• Universal LED current source applications requiring independent dimming

LED Driver IC Procurement Notes

Verify the specific suffix against official Analog Devices documentation to confirm pinout and functional variations. The '#PBF' designation indicates lead-free packaging compliant with RoHS standards. Confirm package type and thermal characteristics match your PCB layout requirements. Ensure I²C address settings align with system bus constraints. Cross-reference the datasheet revision date to ensure compatibility with latest design guidelines.

LED Driver IC Selection Notes

Select this component when designing systems requiring up to eighteen individually controllable LED channels from a single IC. It is suitable for applications needing low noise power delivery and efficient charge pump regulation within a 2.9V to 5.5V input range. Consider the 28-UTQFN package size for space-constrained designs. Verify that the I²C interface speed and addressing fit within the controller's capabilities.

LED Driver IC Part Context

The LTC3220 belongs to Analog Devices' family of highly integrated LED drivers designed for multi-display applications. It shares architectural similarities with the LTC3220-1 but may differ in specific electrical parameters or pin configurations. This series emphasizes integration by combining power conversion and current regulation into a single solution, reducing external component count compared to discrete designs.

LED Driver IC Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult Analog Devices for direct replacements or cross-references.