TLC5947DAP
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Texas Instruments TLC5947DAP

Manufacturer No:
TLC5947DAP
Manufacturer:
Texas Instruments
Package:
Bulk
Description:
IC LED DRVR LINEAR 30MA 32HTSSOP
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Payment:
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Product Introduction

Overview

The TLC5947DAP, produced by Texas Instruments, is a 24-channel, constant-current sink LED driver. This device is designed to control LED displays with high precision and reliability. Each of the 24 channels is individually adjustable with 4096 pulse-width modulated (PWM) steps, allowing for fine-grained control over the brightness of the LEDs. The PWM control is repeated automatically with the programmed grayscale (GS) data, which is written via a serial interface port. The current value of all 24 channels is set by a single external resistor, simplifying the setup and configuration process.

Key Specifications

Specification Value
Number of Channels 24
Current Capability per Channel 30 mA (Constant-Current Sink)
PWM Grayscale Control 12-Bit (4096 Steps)
LED Power-Supply Voltage Up to 30 V
VCC Voltage Range 3.0 V to 5.5 V
Constant-Current Accuracy Channel-to-Channel: ±2% (Typical), Device-to-Device: ±2% (Typical)
Data Transfer Rate 30 MHz (Standalone), 15 MHz (Cascaded Devices, SCLK Duty = 50%)
Internal Oscillator Frequency 4 MHz
Operating Temperature Range -40°C to 85°C
Package Type HTSSOP-32

Key Features

  • 24 channels with constant-current sink output
  • 30-mA capability per channel
  • 12-bit PWM grayscale control with 4096 steps
  • LED power-supply voltage up to 30 V
  • VCC voltage range from 3.0 V to 5.5 V
  • CMOS logic level I/O
  • High data transfer rates: 30 MHz (standalone) and 15 MHz (cascaded devices)
  • Shift out data changes with falling edge to avoid data shift errors
  • Auto display repeat
  • 4-MHz internal oscillator
  • Thermal shutdown (TSD) with automatic restart under normal temperature conditions
  • Noise reduction with 4-channel grouped delay to prevent inrush current

Applications

  • Static LED displays
  • Message boards
  • Amusement illumination
  • TV backlighting
  • Other applications requiring precise LED control

Q & A

  1. What is the TLC5947DAP used for?

    The TLC5947DAP is a 24-channel, constant-current sink LED driver used for controlling LED displays with high precision.

  2. How many PWM steps does the TLC5947DAP support?

    The TLC5947DAP supports 4096 PWM steps for each channel.

  3. What is the maximum LED power-supply voltage for the TLC5947DAP?

    The maximum LED power-supply voltage is up to 30 V.

  4. What is the operating temperature range of the TLC5947DAP?

    The operating temperature range is from -40°C to 85°C.

  5. Does the TLC5947DAP have thermal protection?
  6. How is the current value set for the channels?

    The current value of all 24 channels is set by a single external resistor.

  7. What is the data transfer rate of the TLC5947DAP?

    The data transfer rate is 30 MHz for standalone operation and 15 MHz for cascaded devices with a 50% SCLK duty cycle.

  8. Does the TLC5947DAP have an internal oscillator?
  9. What package type is the TLC5947DAP available in?

    The TLC5947DAP is available in an HTSSOP-32 package.

  10. What are some common applications of the TLC5947DAP?

Product Attributes

Type:Linear
Topology:Shift Register
Internal Switch(s):Yes
Number of Outputs:24
Voltage - Supply (Min):3V
Voltage - Supply (Max):5.5V
Voltage - Output:30V
Current - Output / Channel:30mA
Frequency:4MHz
Dimming:- 
Applications:Backlight
Operating Temperature:-40°C ~ 85°C (TA)
Mounting Type:Surface Mount
Package / Case:32-TSSOP (0.240", 6.10mm Width) Exposed Pad
Supplier Device Package:32-HTSSOP
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Similar Products

Part Number TLC5947DAP TLC5947DAPR
Manufacturer Texas Instruments Texas Instruments
Product Status Active Active
Type Linear Linear
Topology Shift Register Shift Register
Internal Switch(s) Yes Yes
Number of Outputs 24 24
Voltage - Supply (Min) 3V 3V
Voltage - Supply (Max) 5.5V 5.5V
Voltage - Output 30V 30V
Current - Output / Channel 30mA 30mA
Frequency 4MHz 4MHz
Dimming - -
Applications Backlight Backlight
Operating Temperature -40°C ~ 85°C (TA) -40°C ~ 85°C (TA)
Mounting Type Surface Mount Surface Mount
Package / Case 32-TSSOP (0.240", 6.10mm Width) Exposed Pad 32-TSSOP (0.240", 6.10mm Width) Exposed Pad
Supplier Device Package 32-HTSSOP 32-HTSSOP

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