TLC5940NT Multiplexer DIP

The TLC5940NT is a 16-channel LED driver IC with PWM control, commonly used for precise and individually controllable LED displays. It comes in a DIP-28 package, making it suitable for prototyping on breadboards or through-hole PCBs. The chip can control the brightness and intensity of LEDs through grayscale PWM and current sink channels, providing smooth, consistent light output.

Key Specifications for TLC5940NT

General Specifications

1. Package Type: DIP-28 (through-hole, Dual Inline Package)
2. Channels: 16 constant-current sink outputs
3. Output Current: Programmable up to 120 mA per channel
4. PWM Control: 12-bit grayscale PWM for each channel (4096 levels)

Electrical Characteristics

1. Supply Voltage (V_CC): 3.0 V to 5.5 V (logic voltage)
2. Output Voltage Range (V_O): Up to 17 V per channel (suitable for driving LEDs with higher forward voltages)
3. Max Output Current per Channel (I_OUT): 120 mA (programmable via an external resistor)
4. Total Power Dissipation (P_tot): Dependent on configuration and cooling but designed for moderate loads typical in LED arrays

Key Features

1. Individual Channel Control: Each channel can be adjusted independently, allowing for complex lighting patterns.
2. PWM Grayscale Control: 12-bit grayscale control for each output enables smooth brightness transitions (supports dimming and color mixing).
3. Current Programming: Current is controlled by an external resistor, ensuring consistent brightness even with power fluctuations.
4. Dot Correction: 6-bit adjustment for each channel to ensure uniform LED brightness across the display.
5. Daisy-Chain Capability: Multiple TLC5940 chips can be chained for driving large LED arrays.

Typical Applications

1. LED Displays and Signage: For matrix displays or light-up signs with precise control over each LED.
2. RGB LED Control: Commonly used for driving RGB LEDs in light shows or decorative lighting.
3. Model Lighting and Decoration: Perfect for small, detailed lighting with programmable brightness.
4. Wearables and Costume LEDs: Ideal for creating programmable light patterns in wearable electronics or illuminated costumes.

The TLC5940NT in DIP form factor is popular for prototyping and DIY projects, as it provides flexible, high-quality control over LED lighting with easy handling and reliable performance.