Overview
The STP4CMPQTR is a charge-pump-based 4-channel LED driver designed by STMicroelectronics. It is specifically tailored for RGB illumination and LCD display backlighting. This device operates within an input voltage range of 2.7 V to 5.5 V, making it suitable for battery-powered applications. The STP4CMPQTR generates regulated current sinks with high absolute and channel-to-channel accuracy, enabling it to drive up to 4 LEDs with forward voltages as high as 3.8 V. The compact QFN20 package (1.8x3.2 mm) makes it ideal for applications with space constraints.
Key Specifications
| Parameter | Value |
|---|---|
| Operating Voltage Range | 2.7 V to 5.5 V |
| Number of Channels | 4 |
| Output Current per Channel | Up to 30 mA (programmable via external resistors) |
| Output Current Accuracy | ±7% (absolute), ±4% (channel-to-channel mismatch) |
| Package Type | QFN20 (1.8x3.2 mm) |
| Operating Temperature Range | -40°C to 85°C |
| Mounting Type | Surface Mount |
Key Features
- Full RGB function support
- 4-channel LED driver with individual ON/OFF control directly from input pins
- Individually programmable output current for each channel via external resistors
- Selectable charge pump enable/disable
- Thermal protection
- PWM control for brightness adjustment through 4 EN (enable) pins
- Compact QFN20 package for space-constrained applications
Applications
The STP4CMPQTR is designed for various lighting applications, including:
- RGB illumination
- LCD display backlighting
- Portable and battery-powered devices
- Industrial and consumer electronics requiring precise LED control
Q & A
- What is the operating voltage range of the STP4CMPQTR?
The operating voltage range is 2.7 V to 5.5 V. - How many channels does the STP4CMPQTR support?
The device supports 4 channels. - What is the maximum output current per channel?
The maximum output current per channel is up to 30 mA. - How is the output current accuracy of the STP4CMPQTR?
The output current accuracy is ±7% (absolute) and ±4% (channel-to-channel mismatch). - What package type does the STP4CMPQTR use?
The package type is QFN20 (1.8x3.2 mm). - What is the operating temperature range of the STP4CMPQTR?
The operating temperature range is -40°C to 85°C. - Can the charge pump be enabled or disabled?
Yes, the charge pump can be selectively enabled or disabled. - Does the STP4CMPQTR support PWM control?
Yes, PWM control is supported through the 4 EN (enable) pins. - What are some typical applications of the STP4CMPQTR?
Typical applications include RGB illumination, LCD display backlighting, and portable or battery-powered devices. - Is thermal protection included in the STP4CMPQTR?
Yes, thermal protection is included.
