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TLC5973

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3-channel, 12-bit PWM constant current LED driver

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Data sheet

TLC5973

ACTIVE
Data sheet Order now

Product details

Number of channels 3 LED current per channel (mA) 50 LED configuration Series, Single Program memory No Topology Current Sink, Linear Programmable ramp control No Vin (min) (V) 3 Vin (max) (V) 5.5 Iout (max) (A) 0.15 Features Serial interface Iq (typ) (mA) 5 Operating temperature range (°C) -40 to 125 Rating Catalog
Number of channels 3 LED current per channel (mA) 50 LED configuration Series, Single Program memory No Topology Current Sink, Linear Programmable ramp control No Vin (min) (V) 3 Vin (max) (V) 5.5 Iout (max) (A) 0.15 Features Serial interface Iq (typ) (mA) 5 Operating temperature range (°C) -40 to 125 Rating Catalog
SOIC (D) 8 29.4 mm² 4.9 x 6
  • Three Constant Sink Current Channels
  • Current Capability:
    • 2 mA to 35 mA per Channel (VCC ≤ 4.0 V)
    • 2 mA to 50 mA per Channel (VCC > 4.0 V)
  • Grayscale (GS) Control with PWM:
    • 12-Bit (4096 Steps)
  • Single-Wire Interface (EasySet)
  • Power-Supply (VCC) Voltage Range:
    • 3 V to 6 V
  • OUT Pins Maximum Voltage: Up to 21 V
  • Integrated Shunt Regulator
  • Data Transfer Maximum Rate:
    • Bits per Second (bps): 3 Mbps
  • Internal GS Clock Oscillator: 12 MHz (typ)
  • Display Repeat Rate: 2.9 kHz (typ)
  • Output Delay Switching to Prevent Inrush Current
  • Unlimited Device Cascading
  • Operating Temperature: –40°C to 85°C
  • Three Constant Sink Current Channels
  • Current Capability:
    • 2 mA to 35 mA per Channel (VCC ≤ 4.0 V)
    • 2 mA to 50 mA per Channel (VCC > 4.0 V)
  • Grayscale (GS) Control with PWM:
    • 12-Bit (4096 Steps)
  • Single-Wire Interface (EasySet)
  • Power-Supply (VCC) Voltage Range:
    • 3 V to 6 V
  • OUT Pins Maximum Voltage: Up to 21 V
  • Integrated Shunt Regulator
  • Data Transfer Maximum Rate:
    • Bits per Second (bps): 3 Mbps
  • Internal GS Clock Oscillator: 12 MHz (typ)
  • Display Repeat Rate: 2.9 kHz (typ)
  • Output Delay Switching to Prevent Inrush Current
  • Unlimited Device Cascading
  • Operating Temperature: –40°C to 85°C

The TLC5973 is an easy-to-use, 3-channel, 50-mA constant sink current LED driver. The single-wire,
3-Mbps serial interface (EasySet) provides a solution for minimizing wiring cost. The LED driver provides 12-bit pulse width modulation (PWM) resolution. The display repeat rate is achieved at 2.9 kHz (typ) with an integrated 12-MHz grayscale (GS) clock oscillator. The driver also provides unlimited cascading capability.

All output sink constant currents can be set by an external resistor. The TLC5973 has an internal shunt regulator that can be used for higher VCC power-supply voltage applications.

The TLC5973 is an easy-to-use, 3-channel, 50-mA constant sink current LED driver. The single-wire,
3-Mbps serial interface (EasySet) provides a solution for minimizing wiring cost. The LED driver provides 12-bit pulse width modulation (PWM) resolution. The display repeat rate is achieved at 2.9 kHz (typ) with an integrated 12-MHz grayscale (GS) clock oscillator. The driver also provides unlimited cascading capability.

All output sink constant currents can be set by an external resistor. The TLC5973 has an internal shunt regulator that can be used for higher VCC power-supply voltage applications.
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Type Title Date
* Data sheet TLC5973 3-Channel, 12-Bit, PWM Constant-Current LED Driver with Single-Wire Interface (EasySet) datasheet (Rev. B) PDF | HTML 30 Apr 2014
White paper Common LED Functions and LED Driver Design Considerations 21 Sep 2020
Application note How to Select a RGB LED Driver 08 Aug 2019

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