TLC59282DBQR

Overview

The TLC59282 is a 16-channel constant current LED sink driver manufactured by Texas Instruments. It features an I2C-compatible serial interface for control and data transmission. The device provides independent current regulation for each channel, allowing precise brightness control without external resistors. Key electrical parameters include a supply voltage range of 2.7V to 5.5V and a maximum output current of 25mA per channel. The package type is a 24-pin TSSOP with a 0.65mm pitch, designated as DBQ.

Feature Summary

• Integrates 16-bit shift register and latch for serial data input
• Provides independent constant current sinking for each channel
• Supports daisy-chaining multiple devices for expanded channel counts

Applications

• LED indicator arrays in consumer electronics
• Backlighting control for portable devices
• General-purpose digital output expansion in embedded systems

Procurement Notes

Verify the specific ordering suffix matches the required tape and reel quantity. Confirm the temperature grade corresponds to the operational environment requirements. Ensure the package marking aligns with the design-in specifications. Cross-reference the datasheet revision date to confirm latest electrical characteristics. Validate that the I2C address configuration meets system constraints.

Selection Notes

Choose this component when a high-density solution for LED driving is required within a limited footprint. Consider the I2C interface compatibility with the host microcontroller. Evaluate the thermal performance based on the number of simultaneously active channels. Assess the power supply noise immunity requirements for the application environment.

Part Context

This part belongs to the TLC5928x family of LED drivers. It serves as a cost-effective alternative to parallel GPIO expansion for lighting applications. The device simplifies PCB layout by reducing the number of control lines needed for multi-channel outputs compared to traditional shift registers.

Replacement Considerations

Direct substitutes include the TLC59281 for single-ended output configurations or the TLC59271 for similar functionality with different packaging. Verify pin-to-pin compatibility before substitution. Check if the replacement part supports the same I2C clock speeds and current settings.