STP08DP05TTR - 8-bit Constant Current LED Sink Driver
The STP08DP05TTR from STMicroelectronics is a monolithic, low voltage, low current power 8-bit shift register designed for LED panel displays. The device contains an 8-bit serial-in, parallel-out shift register that feeds an 8-bit D-type storage register. In the output stage, eight regulated current sources provide from 5 mA to 100 mA constant current to drive the LEDs.
Key Features
- Output Current Adjustable: Through external resistor, users can set the output current from 5 mA up to 100 mA, enabling control over the brightness of connected LEDs.
- Power Supply Voltage: Can operate on a power supply voltage ranging from 3.3V to 5V, making it versatile for various applications and compatible with common logic levels.
- Low Voltage Power Supply: Its low voltage operation makes it suitable for portable applications.
- Serial Data IN/Parallel Data OUT: Allows for simple serial-to-parallel data conversion and reduces the number of microcontroller I/O lines required to control multiple LEDs.
- Error Detection: Features error detection circuitry that monitors the state of the output current, providing increased reliability.
- Thermal Shutdown: The built-in thermal shutdown protection ensures the device operates within safe temperature limits.
- Output Current: 90 mA: Each channel can sink up to 90 mA, making the device capable of driving a wide range of LEDs.
Applications
The STP08DP05TTR is ideal for a variety of applications, including:
- LED displays
- Message boards
- Industrial control indicators
- Panel meters
- LED status signalization
With its constant current output and low power operation, the STP08DP05TTR is a reliable choice for designers looking to create bright, consistent LED displays and indicators while maintaining energy efficiency. Its SO-24 thin package allows for compact PCB designs, making it an excellent choice for space-constrained applications.
