STP4CMPQTR

Overview

The STP4CMPQTR is a charge-pump-based, four-channel LED driver manufactured by STMicroelectronics. Designed for RGB illumination and LCD display backlighting, it operates from a battery supply with an input voltage range of 2.7 V to 5.5 V. The device generates regulated current sinks with high absolute and channel-to-channel accuracy to drive up to four LEDs, supporting forward voltages as high as 3.8 V. Each channel features individually programmable output current via external resistors, with a maximum capability of 30 mA. It includes thermal protection and utilizes a compact QFN20 package measuring 1.8x3.2 mm.

Feature Summary

• Integrates a charge pump to regulate output voltage using a small ceramic capacitor
• Provides independent ON/OFF control for each of the four channels via input pins
• Supports PWM brightness control applied directly to enable pins
• Includes thermal protection circuitry for operational safety

Applications

• RGB illumination systems
• LCD display backlighting
• Space-constrained portable electronic devices

Procurement Notes

Verify the specific suffix 'QTR' against official STMicroelectronics documentation to confirm tape-and-reel packaging specifications and quantity per reel. Ensure compatibility with the required QFN20 footprint dimensions of 1.8x3.2 mm during PCB layout. Confirm that the selected external resistors align with the specified current accuracy tolerances.

Selection Notes

Select this component when designing low-voltage battery-powered applications requiring precise, multi-channel LED current regulation. It is suitable for designs needing individual channel control and high accuracy without complex digital interfaces. Consider the small QFN20 package size if board real estate is limited. Verify that the application environment stays within the specified operating temperature range.

Part Context

This part belongs to STMicroelectronics' portfolio of LED lighting driver ICs. It is specifically engineered for applications requiring efficient power management in compact form factors. The device integrates charge-pump technology to handle LED forward voltage requirements efficiently within a low-voltage system architecture.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Consult official manufacturer cross-reference lists or datasheets for verified alternatives.