STP16CPC26TTR

Overview

The STP16CPC26TTR is a monolithic, low voltage, 16-bit constant current LED sink driver manufactured by STMicroelectronics. It integrates a 16-bit shift register and data latches to convert serial input data into parallel output format. The device features sixteen regulated current generators providing an adjustable output current range of 5 mA to 90 mA per channel, externally set via a resistor. It supports a maximum clock frequency of 30 MHz for high-speed data transmission and guarantees a 20 V driving capability. The unit operates on a 3 V to 5.5 V power supply and includes thermal shutdown protection at 170 °C with approximately 15 °C hysteresis.

Feature Summary

• Integrates 16-bit shift register and data latches for serial-to-parallel data conversion
• Provides 16 constant current output channels with adjustable current levels
• Features thermal shutdown protection for overtemperature safety
• Supports high-speed data transmission with up to 30 MHz clock frequency

Applications

• LED matrix displays requiring individual LED control
• Cost-effective LED driving schemes with row-wise scanning
• High data rate transmission systems for lighting applications

Procurement Notes

Verify the specific package variant (QSOP24, SO-24, TSSOP-24, or HTSSOP-24) as the base part number covers multiple physical configurations. Confirm that the 'TTR' suffix corresponds to the required reel packaging type for your assembly line. Ensure the design accounts for the external resistor needed to set the output current within the specified 5 mA to 90 mA range. Cross-reference the datasheet for pinout compatibility if replacing existing components in a PCB layout.

Selection Notes

Select this component when a low-voltage, 16-channel constant current sink is required for LED arrays. It is suitable for designs needing precise bit-to-bit current accuracy of ±1% typical. Consider the 20 V rating if connecting LEDs in series per channel. Evaluate the operating temperature range (-40 °C to +125 °C) against environmental conditions. Choose based on the available package options such as TSSOP-24 or HTSSOP-24 with exposed pad for thermal management.

Part Context

The STP16CPC26 belongs to the STP16CPS05 family of LED display drivers from STMicroelectronics. This family focuses on low-voltage operation and constant current sinking capabilities for driving LED segments or matrices. The device is commonly used in evaluation boards like the STEVAL-LLL005V1, which demonstrates its application in Bluetooth-enabled LED matrix displays. It serves as a core component for managing brightness and data transmission in compact lighting solutions.

Replacement Considerations

Public confirmed substitute part numbers are not explicitly listed in the provided documentation. Verify functional equivalence regarding current range, voltage ratings, and interface compatibility before considering alternative manufacturers.

FAQ

How is the output current adjusted?

The output current is externally adjusted through a single resistor connected to the device.

What is the maximum clock frequency supported?

The device supports a maximum clock frequency of 30 MHz, making it suitable for high data rate transmission.

Does the device include overtemperature protection?

Yes, it features thermal shutdown protection that activates at 170 °C with approximately 15 °C hysteresis.