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Product details

Parameters

Number of channels (#) 48 LED current per channel (mA) 35 Vin (Min) (V) 3 Vin (Max) (V) 3.6 Features OVP Operating temperature range (C) -40 to 85 Rating Catalog open-in-new Find other RGB LED drivers

Package | Pins | Size

VQFN (RTQ) 56 64 mm² 8 x 8 open-in-new Find other RGB LED drivers

Features

  • 48 Constant-Current Sink Output Channels with On or Off Control
  • Current Capability:
    • 34.9 mA for 32 Channels
    • 24.4 mA 16Channels
  • No External Resistor for Current Setting
  • Maximum Current Control (MC): 3 Bits (8 Steps)
  • Global Brightness Control (BC) for Each Color Group: 7 Bits (128 Steps), Three Groups
  • LED Power-Supply Voltage: Up to 10 V
  • VCC = 3.0 V to 3.6 V
  • Constant-Current Accuracy:
    • Channel-to-Channel = ±1% (typ), ±3% (max)
    • Device-to-Device = ±2% (typ), ±4% (max)
  • Data Transfer Rate: 30 MHz
  • BLANK Pulse Duration: 40 ns (min)
  • LED Open Detection (LOD)
  • LED Short Detection (LSD)
  • Power-Save Mode (PSM): 7-µA Consumption, High-Speed Recovery
  • Undervoltage Lockout Sets Default Data
  • Delayed Switching Minimizes Inrush Current
  • Operating Temperature: –40°C to +85°C
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Description

The TLC5954 is a 48-channel, constant-current sink LED driver. Each channel can be turned on or off by writing data to an internal register. The output channels (OUTX) are grouped into three groups of 16 channels. Each channel group (R, G, and B) has a 128-step global brightness control (BC) function. The maximum current value of all 48 channels can be set with an 8-step maximum current control (MC) function. The device has two error flags: LED open detection (LOD) and LED short detection (LSD). The error flags can be read via a serial interface port. The device also has a power-save mode that sets the total current consumption to 7 µA (typ) when all outputs are off.

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Technical documentation

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Type Title Date
* Data sheet TLC5954 48-Channel, Constant-Current LED Driver with Global Brightness Control, LED Open-Short Detection, and Power-Save Mode datasheet Apr. 15, 2014
White paper Common LED Functions and LED Driver Design Considerations Sep. 21, 2020
Technical article Here's how body electronics and lighting technology are changing the driving experience Sep. 26, 2016
Technical article LED brightness adjustment: high-frequency PWM dimming Aug. 26, 2016
Technical article Take better selfies with innovative LED flashes Nov. 18, 2014
Technical article Solving the automotive EMI issues in new cars with all the screens Sep. 11, 2014

Design & development

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Design tools & simulation

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PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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CAD/CAE symbols

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QFN (RTQ) 56 View options

Ordering & quality

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