STP04CM05XTTR

Overview

The STP04CM05XTTR is a high-power LED sink driver and 4-bit shift register designed for power-LED applications. It features four regulated current sources providing an adjustable output current range of 80 to 400 mA. The device guarantees a 20 V output driving capability, allowing multiple LEDs to be connected in series. It operates with a maximum clock frequency of 30 MHz and supports serial data input with parallel data output. The component functions within an operating temperature range of -40°C to 125°C.

Feature Summary

• Four constant current output channels with adjustable current via one external resistor
• High output driving capability of 20 V for series LED connections
• Integrated 4-bit serial-in, parallel-out shift register feeding a D-type storage register
• Built-in thermal shutdown protection that turns off outputs when junction temperature exceeds limits

Applications

• Very high brightness displays
• Special lighting applications
• LED backlight systems requiring adaptive voltage compensation

Procurement Notes

Verify the specific ordering suffix XTTR to confirm the tape and reel packaging configuration required for automated surface-mount assembly processes. Ensure the selected variant matches the exact pinout and package dimensions specified in the official datasheet to guarantee compatibility with the intended PCB footprint and soldering profile requirements.

Selection Notes

Select this component for designs requiring high-current sinking capabilities up to 400 mA per channel. It is suitable for systems driven by 3.3 V microcontrollers due to its low-voltage operation. Consider the exposed pad package for enhanced thermal performance in high-density layouts where efficient heat dissipation is critical for maintaining reliability under continuous load conditions.

Part Context

This part belongs to the STP04CM05 series of constant current power-LED sink drivers from STMicroelectronics. It is specifically engineered for demanding power-LED applications that require precise current regulation and robust serial control interfaces. The device integrates shift register functionality directly with the driver stage to simplify system architecture.

Replacement Considerations

No public confirmed substitute part numbers are available.