STLA02PUR

Overview

The STLA02PUR is a boost DC-DC converter designed as a white LED driver for display backlight applications. It operates from an input voltage range of 2.5 V to 18 V and provides an output voltage up to 27 V. The device can drive up to six white LEDs connected in series with a total output current capability of 20 mA at 24 V, delivering up to 500 mW of output power. It features a fixed switching frequency of 2.3 MHz and includes a 350 mA integrated switch. Regulation is achieved via an internal error amplifier using high-side sensing. The component is housed in a DFN6 2 x 2 mm package.

Feature Summary

• Boost topology with integrated 350 mA switch for driving series-connected white LEDs
• PWM dimming input dedicated to the enable pin supporting a 300:1 dimming range
• Built-in protection mechanisms including overvoltage protection and chip overtemperature detection
• Current mode control enabling fast response to enable pin voltage changes

Applications

• Display backlight systems requiring white LED illumination
• Portable electronic devices powered by single-cell lithium batteries
• Applications necessitating compact LED driver solutions with low quiescent current

Procurement Notes

Verify the specific ordering suffix PUR corresponds to the DFN6 2x2mm package and tape-and-reel delivery format. Confirm that the RoHS compliance status matches current manufacturing standards. Ensure the part number aligns with the active product status indicated in official documentation before finalizing procurement specifications.

Selection Notes

Select this component when designing circuits requiring a single-inductor boost solution for up to six series white LEDs. It is suitable for applications needing precise current regulation via high-side sensing and PWM dimming capabilities. Consider the 2.3 MHz switching frequency for minimizing external passive component size while maintaining efficient power conversion within the specified input voltage range.

Part Context

The STLA02 belongs to the STLA02 series of LED drivers manufactured by STMicroelectronics. It is specifically engineered for portable display backlighting where space constraints and efficiency are critical. The device integrates necessary control logic and power switches into a small footprint, simplifying the design process for engineers developing compact lighting solutions for consumer electronics.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation.