Packaging information
| Package | Pins HTSSOP (PWP) | 24 |
| Operating temperature range (°C) -40 to 85 |
| Package qty | Carrier 2,000 | LARGE T&R |
Features for the TLC5949
- 16 Constant-Current Sink Output Channels
- Sink Current Capability with
Maximum BC Data: 2 mA to 45 mA - Global Brightness Control (BC):
- 7-Bit (128 Steps) with 25% to 100% Range
- Grayscale Control (GS) with Enhanced Spectrum or Conventional PWM:
- 12-Bit (4096 Steps)
- LED Power-Supply Voltage: Up to 10 V
- VCC: 3.0 V to 3.6 V
- Constant-Current Accuracy:
- Channel-to-Channel: ±0.6% (typ), ±2% (max)
- Device-to-Device: ±1% (typ), ±4% (max)
- Data Transfer Rate: 33 MHz
- Grayscale Control Clock: 33 MHz
- Auto Display Repeat and Auto Data Refresh
- Display Timing Reset
- Power-Save Mode to Minimize VCC Current
- LOD and LSD with Invisible Detection
Mode (IDM) - Output Leakage Detection (OLD)
- Current Reference Terminal Short Flag (ISF)
- Thermal Shutdown (TSD) and Error Flag (TEF)
- Pre-Thermal Warning (PTW)
- Four-Channel Grouped Delay Switching to Prevent Inrush Current
- Operating Temperature: –40°C to +85°C
Description for the TLC5949
The TLC5949 is a 16-channel, constant-current sink LED driver. Each channel has an individually-adjustable, pulse width modulation (PWM) grayscale (GS) brightness control with 4096 steps. All channels have a 128-step global brightness control (BC). BC adjusts brightness deviation with other LED drivers. GS and BC data are accessible with a serial interface port.
The TLC5949 has six error flags: LED open detection (LOD), LED short detection (LSD), output leakage detection (OLD), reference current terminal short flag detection (ISF), pre-thermal warning (PTW), and thermal error flag (TEF). The error detection results can be read with a serial interface port.