Overview
The LED1642GWQTR, produced by STMicroelectronics, is a monolithic, low voltage, low current power 16-bit shift register designed specifically for LED panel displays. This device is optimized for driving high-brightness LEDs and integrates a range of features to ensure efficient and reliable operation. It guarantees a 20 V output driving capability, allowing users to connect several LEDs in series. The LED1642GWQTR is suitable for various display applications, including full color and monochrome large displays and LED signage.
Key Specifications
| Specification | Value |
|---|---|
| Number of Outputs | 16 |
| Output Current Range | 3 mA to 40 mA |
| Current Programming | Through external resistor and 7-bit global current gain adjustment |
| Brightness Control | 12/16-bit PWM grayscale brightness control |
| Supply Voltage Range | 3 V to 5.5 V |
| Operating Temperature Range | -40°C to 85°C |
| Package Type | 24-VFQFN Exposed Pad, QSOP-24, TSSOP 24, HTSSOP24 |
| Clock Frequency | Up to 30 MHz |
| Thermal Shutdown | 170 °C |
Key Features
- 16 constant current output channels
- Output current programmable through an external resistor and 7-bit global current gain adjustment in two ranges
- 12/16-bit PWM grayscale brightness control for each channel
- Programmable output turn-on and turn-off time (four different values available)
- Error detection mode for open and shorted LEDs with programmable shorted-LED detection thresholds
- Auto power saving and auto-wakeup features
- Selectable SDO synchronization on the CLK falling edge
- Selectable gradual output delay to reduce inrush current
- Thermal management with overtemperature alert and output thermal shutdown
Applications
The LED1642GWQTR is primarily used in various display applications, including:
- Full color and monochrome large displays
- LED signage
- Industrial and commercial LED lighting systems
Q & A
- What is the LED1642GWQTR used for?
The LED1642GWQTR is used for driving high-brightness LEDs in display applications such as full color and monochrome large displays and LED signage.
- How many output channels does the LED1642GWQTR have?
The LED1642GWQTR has 16 constant current output channels.
- What is the range of output current for the LED1642GWQTR?
The output current range is from 3 mA to 40 mA.
- How is the brightness controlled in the LED1642GWQTR?
The brightness is controlled through 12/16-bit PWM grayscale brightness control for each channel.
- What are the supply voltage and operating temperature ranges for the LED1642GWQTR?
The supply voltage range is 3 V to 5.5 V, and the operating temperature range is -40°C to 85°C.
- Does the LED1642GWQTR have thermal protection features?
- Can the LED1642GWQTR detect errors in the LED connections?
- What is the clock frequency of the LED1642GWQTR?
The clock frequency is up to 30 MHz.
- Does the LED1642GWQTR support daisy-chain configuration?
- What are the package options for the LED1642GWQTR?
The package options include 24-VFQFN Exposed Pad, QSOP-24, TSSOP 24, and HTSSOP24.
