ALED1642GWXTTR

Overview

The ALED1642GWXTTR is a monolithic, low-voltage LED driver IC from STMicroelectronics designed for panel displays. It features 16 constant current output channels with a maximum output current of 40 mA and an input voltage range of 3 V to 5.5 V. The device utilizes a Buck topology and supports PWM dimming with 12/16-bit grayscale control. Operating at frequencies up to 30 MHz, it includes error detection and current gain control. Packaged in a 24-TSSOP-EP format, it operates within a temperature range of -40°C to +150°C and holds AEC-Q100 qualification.

Feature Summary

• Provides sixteen regulated constant current sources for driving LEDs in series configurations
• Integrates programmable open and shorted-LED error detection modes for system reliability
• Supports selectable gradual output delay to reduce inrush current and EMI interference
• Features auto power-saving and auto-wakeup capabilities to minimize energy consumption

Applications

• LED panel displays
• Backlighting systems
• Automotive lighting applications
• High data rate transmission interfaces

Procurement Notes

Verify the specific suffix XTTR against official documentation to confirm reel packaging specifications and tape dimensions. Ensure compatibility with surface mount assembly processes by checking moisture sensitivity levels and reflow soldering profiles. Confirm that the AEC-Q100 automotive grade qualification meets the target application's environmental requirements before finalizing procurement orders.

Selection Notes

Select this component when designing systems requiring precise current regulation across multiple channels with integrated fault protection. The device is suitable for applications demanding high-speed serial interface operation and flexible brightness control via PWM. Consider the thermal shutdown and overtemperature alert features for environments where heat dissipation management is critical for sustained performance.

Part Context

This part belongs to the ALED1642GW family of LED drivers, which are engineered for low-power, high-performance display solutions. The family emphasizes flexibility through programmable parameters such as current gain and output timing. The XTTR variant specifically denotes the tape and reel packaging configuration intended for automated manufacturing processes.

Replacement Considerations

The LED1642GWPTR is a related variant within the same product family, offering identical functional specifications but potentially differing in package type or operational temperature limits. Verify pinout compatibility and electrical characteristics before substituting.