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Product Detailed Parameters
- Description：IC LED DRVR LIN 120MA 28HTSSOP
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Linear
- Topology：Shift Register
- Internal Switch(s)：Yes
- Number of Outputs：16
- Voltage - Supply (Min)：3V
- Voltage - Supply (Max)：5.5V
- Voltage - Output：17V
- Current - Output / Channel：120mA
- Frequency：30MHz
- Dimming：-
- Applications：Backlight, Signage
- Operating Temperature：-40°C ~ 125°C (TA)
- Mounting Type：Surface Mount
- Package / Case：28-PowerTSSOP (0.173", 4.40mm Width)
- Supplier Device Package：28-HTSSOP
- Grade：-
- Qualification：-
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Overview
The TLC5940QPWPREP is a 16-channel LED driver IC from Texas Instruments, housed in a 28-pin HTSSOP package. It operates on a supply voltage between 3 V and 5.5 V, delivering up to 120 mA per channel with an internal boost converter supporting outputs up to 17 V. The device features 4096-step grayscale PWM control and EEPROM-based dot correction for brightness uniformity. It includes open LED detection and functions within a temperature range of -40°C to +125°C.
Feature Summary
- Integrated 4096-step grayscale PWM control for precise dimming
- EEPROM-stored dot correction compensates for LED brightness variations
- Built-in open LED detection circuitry for fault monitoring
- Internal boost converter enables high-voltage LED driving
Applications
- High-resolution LED matrix displays
- Professional stage and architectural lighting systems
- Video wall backlighting drivers
- Industrial indicator panels requiring uniform brightness
Procurement Notes
Verify the Q suffix indicates automotive-grade qualification and extended temperature range (+125°C) compared to commercial variants. Confirm the PWPR suffix denotes the specific HTSSOP-28 package and reel packaging format. Ensure compatibility with system voltage requirements and thermal management needs for high-temperature operation environments.
Selection Notes
Select this component when high brightness uniformity across multiple channels is critical. The integrated EEPROM eliminates external memory requirements for calibration data. Consider the 120 mA constant current capability for direct LED driving without additional transistors. Verify interface timing constraints against the host microcontroller's SPI or similar serial capabilities.
Part Context
This part belongs to the TLC5940 family of 16-channel LED drivers. It shares core functionality with the standard TLC5940 but offers enhanced reliability and wider operating temperature ranges suitable for demanding environments. The series is widely used in applications requiring precise color mixing and high-density LED control.
Replacement Considerations
TLC5940PWPR (Commercial grade, -40°C to +85°C)
FAQ
What is the maximum output voltage supported by the internal boost converter?
The internal boost converter supports output voltages up to 17 V.
How does the device handle LED brightness inconsistencies?
It uses EEPROM-stored dot correction values to compensate for individual LED brightness variations.
What is the grayscale resolution of the PWM control?
The device provides 4096-step grayscale resolution for each channel.
