STP04CM05B1R

Overview

The STP04CM05B1R is a linear LED driver IC featuring four constant current output channels and an integrated 4-bit shift register. Designed for power-LED applications, it delivers adjustable output currents ranging from 80 mA to 400 mA per channel with a maximum output voltage of 19 V. The device supports serial data input and parallel data output, enabling efficient control via microcontrollers operating at 3.3 V. It operates within a free-air temperature range of -40°C to 125°C and includes protection features such as thermal shutdown and under-voltage lockout.

Feature Summary

• Integrates four regulated constant current sources for driving high-power LEDs
• Includes a 4-bit serial-in, parallel-out shift register for data transmission
• Supports adjustable output current through a single external resistor
• Features built-in thermal shutdown and under-voltage lockout protections

Applications

• High brightness displays
• Special lighting applications
• LED backlight systems using integrated drivers

Procurement Notes

Verify component status carefully as the STP04CM05B1R is listed as obsolete or not recommended for new designs in some distributor records. Confirm availability through authorized channels and check for valid replacement part numbers before procurement. Ensure that the specific package variant matches the required design constraints.

Selection Notes

Select this component for applications requiring precise constant current regulation for multiple LED strings. Consider the 19 V output capability for series LED configurations. Evaluate the need for serial interface integration and ensure the microcontroller supports the required clock frequency. Verify thermal management requirements given the exposed pad package options available for the base family.

Part Context

This part belongs to the STP04CM05 family of high-power LED drivers manufactured by STMicroelectronics. It is designed to replace discrete driver solutions by integrating control logic and power stages into a single package. The B1R suffix typically denotes a specific tape-and-reel packaging configuration for automated assembly processes.

Replacement Considerations

Check for direct replacements within the STP04CM05 family or newer generations of LED drivers from STMicroelectronics. Verify pin compatibility and electrical specifications when substituting obsolete parts.