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TLC5948A

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16-Kanal-ES-PWM LED-Treiber, 7-Bit-Punktkorrektur, 7-Bit-globale Helligkeit, Energiesparmodus, volls

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Datenblatt

TLC5948A

AKTIV
Datenblatt Jetzt bestellen

Produktdetails

Features Dot Correction, 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) (±%) 1.5 Rating Catalog Operating temperature range (°C) -40 to 85
Features Dot Correction, 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) (±%) 1.5 Rating Catalog Operating temperature range (°C) -40 to 85
SSOP (DBQ) 24 51.9 mm² (8.65 mm × 6 mm) HTSSOP (PWP) 24 49.92 mm² (7.8 mm × 6.4 mm)
  • 16 Constant-Current Sink Output Channels
  • Sink Current Capability with Maximum DC and BC Data:
    • 2 mA to 45 mA (VCC ≤ 3.6 V)
    • 2 mA to 60 mA (VCC > 3.6 V)
  • Dot Correction (DC):
    • 7-Bit (128 Steps) with 0% to 100% Range
  • Global Brightness Control (BC):
    • 7-Bit (128 Steps) with 25% to 100% Range
  • Grayscale Control (GS) with Enhanced Spectrum or Conventional PWM:
    • 16-Bit (65,536 Steps)
  • LED Power-Supply Voltage: Up to 10 V
  • VCC: 3.0 V to 5.5 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
  • 16 Constant-Current Sink Output Channels
  • Sink Current Capability with Maximum DC and BC Data:
    • 2 mA to 45 mA (VCC ≤ 3.6 V)
    • 2 mA to 60 mA (VCC > 3.6 V)
  • Dot Correction (DC):
    • 7-Bit (128 Steps) with 0% to 100% Range
  • Global Brightness Control (BC):
    • 7-Bit (128 Steps) with 25% to 100% Range
  • Grayscale Control (GS) with Enhanced Spectrum or Conventional PWM:
    • 16-Bit (65,536 Steps)
  • LED Power-Supply Voltage: Up to 10 V
  • VCC: 3.0 V to 5.5 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

The TLC5948A is a 16-channel, constant-current sink LED driver. Each channel has an individually-adjustable, pulse width modulation (PWM) grayscale (GS) brightness control with 65,536 steps and 128 steps of constant-current dot correction (DC). DC adjusts brightness deviation between channels. All channels have a 128-step global brightness control (BC). BC adjusts brightness deviation with other LED drivers. GS, DC, and BC data are accessible with a serial interface port.

The TLC5948A 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.

The TLC5948A is a 16-channel, constant-current sink LED driver. Each channel has an individually-adjustable, pulse width modulation (PWM) grayscale (GS) brightness control with 65,536 steps and 128 steps of constant-current dot correction (DC). DC adjusts brightness deviation between channels. All channels have a 128-step global brightness control (BC). BC adjusts brightness deviation with other LED drivers. GS, DC, and BC data are accessible with a serial interface port.

The TLC5948A 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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Technische Dokumentation

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Top-Dokumentation Typ Titel Format-Optionen Neueste englische Version herunterladen Datum
* Datenblatt 16-Channel, 16-Bit, ES-PWM, LED Driver for 7-Bit DC and (Replaced SBVS173A) datasheet (Rev. A) 18.12.2012
Whitepaper Common LED Functions and LED Driver Design Considerations 21.09.2020
Auswahlhilfe Power Management Guide 2018 (Rev. R) 25.06.2018

Design und Entwicklung

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Simulationsmodell

TLC5948 IBIS Model

SBVM078.ZIP (35 KB) - IBIS-Modell
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