STP24DP05BTR

Overview

The STP24DP05BTR is a monolithic, low-voltage, low-current power 24-bit shift register designed for LED panel displays. It features an 8 x 3-bit serial-in, parallel-out shift register feeding a D-type storage register. The output stage provides twenty-four regulated current sources delivering 5-80 mA constant current to drive LEDs. It supports a 3 V to 5 V supply and interfaces with 3.3 V or 5 V microcontrollers. Key electrical parameters include a 25 MHz clock frequency and a 20 V output driving capability. The device allows adjustable output current via three external resistors per 8-channel group.

Feature Summary

• Integrated output error detection circuit checks for short-to-GND, short-to-Vo, and open-line conditions, loading results into the shift register for serial output.
• Dedicated pin activates outputs with sequential delay to prevent inrush current during turn-on.
• Adjustable output current through external resistors controls LED light intensity across eight-channel groups.
• High clock frequency of 25 MHz enables high data rate transmission suitable for large-area displays.

Applications

• LED panel displays
• Large-area displays
• Full-color board panels

Procurement Notes

Verify the specific suffix BTR indicates tape-and-reel packaging when sourcing components. Confirm active status and availability through authorized distributors as lifecycle status may vary. Ensure compatibility with 3.3 V or 5 V logic levels for microcontroller interfacing. Check thermal performance requirements against the high thermal efficiency package specifications for your application environment.

Selection Notes

Select this component for applications requiring integrated error detection and adjustable constant current sinking. It is suitable for systems needing high-speed data transmission up to 25 MHz. Consider the 20 V output capability for connecting multiple LEDs in series. Ensure the design accommodates the required external resistors for current adjustment and utilizes the sequential delay feature for reliable operation.

Part Context

The STP24DP05BTR belongs to the STP24DP05 family of LED drivers from STMicroelectronics. It is specifically engineered for power logic applications involving LED matrix panels. The device integrates shift register functionality with regulated current sources, simplifying the design of complex display systems by reducing the need for external driver components.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Evaluate the STEVAL-ILL015V1 development board for evaluation purposes, but it is not a direct replacement component. Consult official STMicroelectronics resources for potential obsolescence management or alternative device recommendations.

FAQ

How does the STP24DP05BTR handle output errors?

The device includes a detection circuit that checks for short-to-GND, short-to-Vo, and open-line conditions. Detection results are loaded into the shift registers and shifted out via the serial line output.

What is the maximum clock frequency supported?

The device supports a high clock frequency of 25 MHz, making it suitable for high data rate transmission applications.

Can the output current be adjusted?

Yes, the user can adjust the output current for each 8-channel group through three external resistors, allowing control over LED light intensity.