ALED8102SXTTR

Overview

The ALED8102SXTTR is a monolithic, low-voltage LED driver IC featuring eight independent low-side output channels. It operates within a supply voltage range of 3 V to 5.5 V and provides regulated constant current outputs adjustable from 5 mA to 100 mA via a single external resistor. The device supports up to 20 V output driving capability, allowing series LED connections. Control is managed through four switch inputs for local dimming and a global PWM signal on the Output Enable (OE) pin. Integrated thermal shutdown activates at approximately 170 °C with 15 °C hysteresis. It is housed in a 16-HTSSOP package with an exposed pad.

Feature Summary

• Eight constant current output channels controlled by four direct switch inputs
• Global brightness adjustment via PWM signal applied to the Output Enable pin
• Integrated thermal management protecting against overheating conditions

Applications

• LED backlighting systems
• General lighting applications
• RGB LED arrays requiring color temperature control

Procurement Notes

Verify the specific ordering suffix against official STMicroelectronics documentation to confirm packaging type and reel specifications. Ensure the selected variant matches the required tape-and-reel configuration for automated assembly processes. Cross-reference the part number with the latest datasheet revision to confirm compliance with current environmental standards such as RoHS. Confirm that the HTSSOP package dimensions align with the target PCB footprint design constraints.

Selection Notes

Select this component for designs requiring multiple low-side LED channels driven by a low-voltage logic supply. The integrated thermal protection simplifies heat dissipation requirements compared to discrete solutions. Verify that the external programming resistor accurately sets the desired current level within the 5 mA to 100 mA range. Ensure the application voltage does not exceed the 20 V output rating per channel to prevent device damage.

Part Context

This part belongs to the LED8102S family of linear LED drivers designed for energy-efficient illumination. It complements other STMicroelectronics LED solutions by offering a compact, multi-channel approach for parallel or series LED configurations. The device is distinct from automotive-grade variants like the ALED7709, focusing instead on general-purpose lighting and display backlighting markets.

Replacement Considerations

Consult official substitution guides for compatible alternatives. No public confirmed substitute part numbers are available in the provided data.