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TLC5940RHB from TI,Texas Instruments

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TLC5940RHB

Manufacturer: TI

4096 Step Grayscale LED Driver w/Dot-Correction

Partnumber Manufacturer Quantity Availability
TLC5940RHB TI 71 In Stock

Description and Introduction

4096 Step Grayscale LED Driver w/Dot-Correction The TLC5940RHB is a 16-channel, constant-current sink LED driver manufactured by Texas Instruments (TI). Below are its specifications, descriptions, and features based on Ic-phoenix technical data files:  

### **Specifications:**  
- **Channels:** 16  
- **Output Current:** Adjustable (up to 120 mA per channel)  
- **Supply Voltage (VCC):** 3.0 V to 5.5 V  
- **Logic Input Voltage (VLOGIC):** 3.0 V to 5.5 V  
- **Dot Correction (DC):** 7-bit (128 steps)  
- **Grayscale (GS) PWM Control:** 12-bit (4096 steps)  
- **Data Transfer Rate:** Up to 30 MHz  
- **Package:** 32-pin VQFN (RHB)  
- **Operating Temperature Range:** -40°C to +85°C  

### **Descriptions:**  
- The TLC5940RHB is designed for LED driving applications requiring high precision and brightness control.  
- It provides constant-current sink outputs with adjustable current levels via an external resistor.  
- Features dot correction and grayscale PWM control for enhanced LED brightness uniformity and dimming.  
- Supports daisy-chaining for multiple devices in large LED arrays.  

### **Features:**  
- **16 Constant-Current Sink Outputs** (individually adjustable).  
- **Dot Correction (DC)** for brightness uniformity correction.  
- **12-bit Grayscale PWM Control** for smooth dimming.  
- **30 MHz Data Transfer Rate** for high-speed communication.  
- **Thermal Shutdown (TSD) and Open-Circuit Detection (VOD)** for protection.  
- **Daisy-Chainable** for cascading multiple devices.  
- **Low-Power Standby Mode** when not in use.  

This information is strictly factual from Ic-phoenix technical data files. Let me know if you need further details.

Application Scenarios & Design Considerations

4096 Step Grayscale LED Driver w/Dot-Correction

Alternative Part Number

  • PCA9685PW --: 16-channel 12-bit PWM LED controller with I2C interface, functionally similar to TLC5940 for LED driving applications.
  • LED1642GWPTR --: 16-channel LED driver with constant current outputs and serial interface, comparable channel count and drive capability.
  • MAX6966ATE+ --: 10-port constant-current LED driver with PWM control, suitable alternative when fewer channels are acceptable.
  • TLC59711PWPR --: 12-channel 16-bit PWM LED driver from a different TI series, offering higher PWM resolution and constant-current outputs.
  • IS31FL3731 --: LED matrix driver with 144 PWM channels and I2C control, suitable as a higher-channel-count alternative for LED driving applications.

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