LTC3220IPF#TRPBF

LED Driver IC Overview

The LTC3220IPF#TRPBF is a highly integrated multi-display LED driver featuring eighteen 20mA universal current sources. It operates with an input voltage range of 2.9V to 5.5V and draws a typical supply current of 3.2mA. The device utilizes a high-efficiency, low-noise charge pump that automatically switches between 1x, 1.5x, and 2x modes based on LED dropout conditions. Control is managed via a two-wire I²C serial interface, supporting independent dimming, on/off switching, blinking, and 64-step linear brightness adjustment for each channel.

LED Driver IC Feature Summary

• Integrates eighteen universal current sources with independent control capabilities
• Features an adaptive charge pump optimizing efficiency across varying voltage drops
• Provides precise brightness regulation through internal references and I²C digital control

LED Driver IC Applications

• Multi-segment LCD backlighting systems
• High-density LED display panels
• Portable electronic device illumination
• Automotive interior lighting modules

LED Driver IC Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when sourcing components. Confirm the manufacturer designation as Analog Devices Inc. or Linear Technology to ensure authenticity. Check RoHS compliance status against current regulatory requirements. Validate the operating temperature range specifications for your intended environmental conditions. Ensure the I²C address configuration matches your system design constraints.

LED Driver IC Selection Notes

Select this component for designs requiring precise individual channel control without complex external circuitry. The integrated charge pump reduces the need for external inductors, saving board space. Consider the I²C interface compatibility with your microcontroller for seamless integration. Evaluate the thermal performance within the specified -40°C to 125°C operating range. Assess the power consumption benefits of the adaptive voltage mode switching for battery-operated applications.

LED Driver IC Part Context

This part belongs to the LTC3220 family of universal LED drivers designed for multi-channel applications. It shares architectural similarities with the LTC3220-1 but differs in specific operational parameters. The series is characterized by its ability to drive various LED types using universal current sources. It represents a solution for compact, high-performance lighting control in consumer and industrial electronics.

LED Driver IC Replacement Considerations

LTC3220IPF-1#TRPBF

LED Driver IC FAQ

How does the charge pump adjust its output voltage?

The charge pump automatically transitions from 1x to 1.5x and then to 2x mode whenever any enabled LED current source enters dropout, optimizing efficiency.

What level of brightness control is supported per channel?

Each of the eighteen channels supports 64-step linear brightness control via 6-bit DACs accessible through the I²C interface.