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Product details

Parameters

Features Error Flag, Fault Detection, LED Open Detection, LED Short to Ground Detection, LED Short to VLED Detection, PWM LED Driver, Power Good, Thermal Shutdown Analog dimming steps 128 Data transfer rate (Typ) (MHz) 33 Ch to ch accuracy (Typ) (+/- %) 0.6 Rating Catalog Operating temperature range (C) -40 to 85 open-in-new Find other Signage LED display drivers

Package | Pins | Size

HTSSOP (PWP) 24 34 mm² 7.7 x 4.4 SSOP (DBQ) 24 52 mm² 8.65 x 6 open-in-new Find other Signage LED display drivers

Features

  • 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
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Description

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.

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Technical documentation

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Type Title Date
* Datasheet 16-Channel, 12-Bit, ES-PWM, Full Self-Diagnosis LED Driver for 7-Bit Global BC L datasheet (Rev. A) Dec. 14, 2012
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Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Design tools & simulation

SIMULATION MODELS Download
SBVM295.ZIP (17 KB) - IBIS Model

CAD/CAE symbols

Package Pins Download
HTSSOP (PWP) 24 View options
SSOP (DBQ) 24 View options

Ordering & quality

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