TLC5925IDWRG4

Overview

The TLC5925IDWRG4 is a low-power, 16-channel constant-current LED sink driver manufactured by Texas Instruments. It features an integrated 16-bit shift register and data latches to convert serial input data into parallel output control signals. The device supports a supply voltage range of 3V to 5.5V and delivers up to 45mA per channel with a maximum output voltage of 17V. Operating at a switch frequency of 30MHz, it ensures consistent current regulation invariant to load voltage shifts. Packaged in a 24-SOIC surface-mount format, this component is designed for efficient LED lighting applications requiring precise dimming and channel control.

Feature Summary

• Provides 16 channels of constant-current sinking capability for uniform LED brightness
• Integrates a 16-bit shift register and data latches for simplified serial data processing
• Maintains output current stability regardless of variations in load voltage
• Supports linear dimming functionality through serial interface control

Applications

• LED signage displays
• General LED lighting systems
• Low-power indicator arrays

Procurement Notes

Verify the complete part number including the G4 suffix to ensure compliance with specific environmental standards and manufacturing revisions. Confirm that the 24-SOIC package dimensions match your PCB footprint requirements. Check datasheet specifications for operating temperature ranges (-40°C to 85°C) against your application environment. Ensure power supply voltages remain within the 3V to 5.5V limits to prevent device malfunction or damage during operation.

Selection Notes

Select this component when a high-density, low-power solution for controlling multiple LEDs is required. The 16-channel architecture reduces board space compared to single-channel drivers. Consider the 45mA output limit per channel to ensure compatibility with the target LED forward current requirements. The serial interface minimizes microcontroller pin usage, making it suitable for systems with limited I/O resources while maintaining precise current regulation across all channels.

Part Context

This part belongs to the TLC5925 family of constant-current LED sink drivers from Texas Instruments. The IDWRG4 designation indicates a specific industrial-grade variant with a wide operating temperature range and RoHS-compliant packaging. It serves as a direct replacement for earlier versions like the TLC5925IDWR, offering enhanced reliability for commercial and industrial lighting applications where stable performance under varying thermal conditions is critical.

Replacement Considerations

The TLC5925IDWR is a compatible alternative within the same product family. Verify pinout compatibility and electrical parameter alignment before substitution. Ensure that any substitute maintains the 16-channel configuration and 45mA current rating to preserve system functionality without redesigning the peripheral circuitry.