The TLC5947RHBT is a 24-channel 12-bit PWM constant-current LED Sink Driver with 4MHz internal oscillator. Each channel is individually adjustable with 4096 pulse-width modulated (PWM) steps. PWM control is repeated automatically with the programmed grayscale (GS) data. GS data are written via a serial interface port. The current value of all 24 channels is set by a single external resistor. It has a thermal shutdown (TSD) function that turn-OFF all output drivers during an over-temperature condition. All of the output drivers automatically restart when the temperature returns to normal conditions.
- CMOS logic level I/O
- Shift out data changes with falling edge to avoid data shift error
- Auto display repeat function
- Thermal shutdown (TSD) - Automatic shutdown at over-temperature conditions
- Noise reduction - 4-channel Grouped delay to prevent inrush current
- Constant-current accuracy - ±2% (typical) channel-to-channel and ±2% (typical) device-to-device
- Green product and no Sb/Br
Applications
Communications & Networking, Industrial
Warnings Device has limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.
Product details
| Device Topology |
Constant Current |
| Input Voltage Min |
3V |
| Input Voltage Max |
5.5V |
| Output Voltage Max |
30V |
| Output Current Max |
30mA |
| Switching Frequency |
30MHz |
| No. of Outputs |
24Outputs |
| IC Mounting |
Surface Mount |
| Driver Case Style |
VQFN |
| No. of Pins |
32Pins |
| Operating Temperature Min |
-40°C |
| Operating Temperature Max |
85°C |
| Product Range |
- |
| Automotive Qualification Standard |
- |
| MSL |
MSL 2 - 1 year |
Other details
| Brand |
TEXAS INSTRUMENTS |
| Part Number |
TLC5947RHBT |
| Quantity |
Each (Supplied on Cut Tape) |
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