LTC3220IPF-1#PBF

LED Driver IC Overview

The LTC3220IPF-1#PBF is a highly integrated multi-display LED driver from Analog Devices. It features eighteen 20mA universal current sources and a low-noise charge pump. The device operates on an input voltage range of 2.9V to 5.5V with a maximum supply current of 3.2mA. It utilizes an I2C serial interface for control and includes six-bit linear DACs for brightness adjustment. The component is housed in a 28-lead UTQFN package and supports an operating temperature range from -40°C to +125°C.

LED Driver IC Feature Summary

• Integrates eighteen independent universal current sources with 64-step linear brightness control capabilities
• Employs a high-efficiency, low-noise charge pump that automatically optimizes efficiency by switching between 1x, 1.5x, and 2x modes based on dropout conditions
• Provides comprehensive per-channel management including independent on/off, blinking, and gradation control via a two-wire I2C serial interface

LED Driver IC Applications

• Multi-display LED lighting systems
• Universal LED backlight drivers
• Applications requiring independent channel dimming and control

LED Driver IC Procurement Notes

Verify availability status as the part may be subject to limited supply or factory special order constraints. Confirm the specific suffix matches the required package and temperature grade. Ensure the I2C address configuration aligns with system requirements. Validate that the input voltage range covers the application's operational needs. Check for any recent lifecycle changes or obsolescence notices from the manufacturer.

LED Driver IC Selection Notes

Select this component when designing systems requiring precise, independent control of multiple LED channels without complex external circuitry. The integrated charge pump reduces the need for external inductors, simplifying layout. Consider the thermal performance within the specified temperature range. Ensure the I2C bus speed and addressing scheme are compatible with the host controller. Evaluate the power consumption against system battery life requirements.

LED Driver IC Part Context

This part belongs to the LTC3220 family of LED drivers designed for high-density display applications. It replaces discrete solutions by integrating current regulation and power conversion. The device is manufactured by Analog Devices under the Linear Technology brand heritage. It is distinct from the standard LTC3220 by its specific packaging and ordering suffix variations.

LED Driver IC Replacement Considerations

The LTC3220IPF is a functional equivalent within the same family. Verify pin compatibility and electrical specifications before substitution. Ensure the replacement part meets the same thermal and voltage requirements.