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Features 48CH LED Driver, Error Flag, Fault Detection, LED Open Detection, LED Short to Ground Detection, LED Short to VLED Detection, PWM LED Driver, Thermal Shutdown Analog dimming steps 512 Data transfer rate (Typ) (MHz) 33 Ch to ch accuracy (Typ) (+/- %) 1 Rating Catalog Operating temperature range (C) -40 to 85 open-in-new Find other LED display drivers

Package | Pins | Size

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

Features

  • 48 Constant-Current Sink Output Channels
  • Sink Current Capability with Max BC/CC data
    • 1~20mA (VCC = 3.3V)
    • 1∼25mA (VCC = 5V)
  • Global Brightness Control (BC): 3-Bit (8 Step)
  • Global Brightness Control (CC) for Each Color Group:
    9-Bit (512 Step), Three Groups
  • LED Power Supply Voltage up to 10V
  • VCC = 3.0 to 5.5V
  • Knee Voltage Vout = 0.24V at 10mA
  • Constant Current Accuracy
    • Channel to Channel = ±1%(Typ), ±3%(Max)
    • Device to Device = ±1%(Typ), ±2%(Max)
  • Data Transfer Rate : 33MHz
  • Grayscale Control Clock : 33MHz
  • Pre-charge FET for Ghost Cancelling
  • Enhanced Circuit for Caterpillar Cancelling
  • Selectable Data Transfer Bit and PWM Bit (9 bit to 16 bit)
  • Selectable Traditional PWM and ES-PWM
  • LED Open Detection (LOD)
  • Thermal Shut Down (TSD)
  • Auto Display Repeat/Auto Data Refresh
  • Delay Switching to Prevent Inrush Current
  • Operating Temperature : –40°C to +85°C
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Description

The TLC5957 is a 48-channel constant current sink driver. Each channel has an individually-adjustable, 65536-step, pulse width modulation (PWM) grayscale (GS) brightness control.

The output channels are divided into three groups, each group has a 512 step color brightness control (CC), CC adjusts brightness between colors. The maximum current value of all 48 channels can be set by 8-step global brightness control (BC). BC adjusts brightness deviation between LED drivers. GS, CC and BC data are accessible via a serial interface port.

TLC5957 has one error flag: LED open detection (LOD), which can be read via a serial interface port. Each constant-current has a pre-charge field- effect transistor (FET), which can remove ghosting and improve display performance on the multiplexing LED display. Besides, TLC5957 has an enhanced circuit, it can cancel the caterpillar effect caused by LED open.

TLC5957 has a poker data transmission mode; GS data length can be configured from 9 bit to 16 bit according to PWM bits in each sub-segment. Poker Mode can significantly increase visual refresh rate in multiplexing applications.

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Technical documentation

= Top documentation for this product selected by TI
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Type Title Date
* Datasheet TLC5957 48-Channel, 16-Bit ES-PWM LED Driver with Pre-Charge FET, LED OPEN Detection and Caterpillar Cancelling datasheet Aug. 21, 2014
White paper Common LED Functions and LED Driver Design Considerations Sep. 21, 2020
Technical articles Here's how body electronics and lighting technology are changing the driving experience Sep. 26, 2016
Technical articles LED brightness adjustment: high-frequency PWM dimming Aug. 26, 2016
User guide How to Use TLC5957 to Build a Multiplexing LED Wall May 25, 2016
Technical articles Take better selfies with innovative LED flashes Nov. 18, 2014
Technical articles Solving the automotive EMI issues in new cars with all the screens Sep. 10, 2014

Design & development

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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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Reference designs

REFERENCE DESIGNS Download
10×16 Full-Color RGB LED Matrix Reference Design
TIDA-01615 — This reference design showcases a solution using a 48-channel LED driver TLC5957 to drive a 10×16 full color (R/G/B) LED matrix with a 1/10 multiplexing rate. This design enables you to drive 160 RGB LEDs with only one TLC5957 LED driver and five dual PMOSFETs. The design provides selectable (...)
document-generic Schematic

CAD/CAE symbols

Package Pins Download
QFN (RTQ) 56 View options

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