Overview
The STP16CPC26PTR is a monolithic, low voltage, 16-bit constant current LED sink driver produced by STMicroelectronics. This device integrates a 16-bit shift register and data latches, which convert serial input data into parallel output format. It features sixteen regulated current generators that provide a constant current ranging from 5 mA to 90 mA to drive LEDs. The output current is adjustable through an external resistor, and LED brightness can be adjusted from 0% to 100% via the OE pin. The device is capable of driving LEDs in series with a maximum voltage of 20 V per current source and supports a high clock frequency of 30 MHz, making it suitable for high data rate transmission. Additionally, it includes thermal shutdown protection to prevent overtemperature events, with a shutdown temperature of 170 °C and a hysteresis of about 15 °C.
Key Specifications
| Parameter | Description | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|---|
| Number of Output Channels | Constant current output channels | - | - | 16 | - |
| Output Current Range | Adjustable output current | 5 mA | - | 90 mA | mA |
| Current Accuracy | Typical current accuracy bit to bit | - | ±1% | - | % |
| Max Clock Frequency | Maximum clock frequency | - | - | 30 MHz | MHz |
| Rated Voltage | Current generators rated voltage | - | - | 20 V | V |
| Power Supply Voltage | Supply voltage range | 3 V | - | 5.5 V | V |
| Thermal Shutdown Temperature | Thermal shutdown temperature | - | - | 170 °C | °C |
| Thermal Shutdown Hysteresis | Thermal shutdown hysteresis | - | - | about 15 °C | °C |
| Packages Available | Packages available for the device | - | - | QSOP24, SO-24, TSSOP-24, HTSSOP-24 | - |
Key Features
- 16 constant current output channels
- Adjustable output current through an external resistor
- Output current range: 5 mA to 90 mA
- ±1% typical current accuracy bit to bit
- Maximum clock frequency: 30 MHz
- 20 V current generators rated voltage
- 3 - 5.5 V power supply voltage range
- Thermal shutdown for overtemperature protection (170 °C with about 15 °C hysteresis)
- LED brightness adjustment from 0% to 100% via OE pin
Applications
- Video display panel LED drivers
- Special lighting applications
- High brightness LED array drivers
- LED matrix displays (e.g., 7x25 LED Matrix panel, 60 LED cost-effective matrix display)
Q & A
- What is the STP16CPC26PTR used for?
The STP16CPC26PTR is used as a 16-bit constant current LED sink driver, suitable for driving LEDs in various applications such as video display panels and special lighting.
- How many output channels does the STP16CPC26PTR have?
The device has 16 constant current output channels.
- What is the adjustable output current range of the STP16CPC26PTR?
The output current can be adjusted from 5 mA to 90 mA through an external resistor.
- What is the maximum clock frequency supported by the STP16CPC26PTR?
The device supports a maximum clock frequency of 30 MHz.
- What is the rated voltage of the current generators in the STP16CPC26PTR?
The current generators are rated for a maximum voltage of 20 V.
- What is the power supply voltage range for the STP16CPC26PTR?
The device operates with a power supply voltage range of 3 V to 5.5 V.
- How does the thermal shutdown protection work in the STP16CPC26PTR?
The thermal shutdown is triggered at a junction temperature of 170 °C, with a hysteresis of about 15 °C. When activated, all outputs are turned off until the temperature decreases.
- What packages are available for the STP16CPC26PTR?
The device is available in QSOP24, SO-24, TSSOP-24, and HTSSOP-24 packages.
- Can the LED brightness be adjusted using the STP16CPC26PTR?
Yes, the LED brightness can be adjusted from 0% to 100% via the OE pin.
- What is the typical current accuracy of the STP16CPC26PTR?
The typical current accuracy is ±1% bit to bit.
