SLVS934B June 2009  – July 2015 TLC59025

PRODUCTION DATA. 

  1. Features
  2. Applications
  3. Description
  4. Revision History
  5. Pin Configuration and Functions
  6. Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics for 3-V Input Voltage
    6. 6.6 Electrical Characteristics for 5.5-V Input Voltage
    7. 6.7 Power Dissipation Ratings
    8. 6.8 Timing Requirements
    9. 6.9 Switching Characteristics for 3-V Input Voltage
    10. 6.10Switching Characteristics for 5.5-V Input Voltage
    11. 6.11Typical Characteristics
  7. Parameter Measurement Information
  8. Detailed Description
    1. 8.1Overview
    2. 8.2Functional Block Diagram
    3. 8.3Feature Description
      1. 8.3.1Constant Current
    4. 8.4Device Functional Modes
  9. Application and Implementation
    1. 9.1Application Information
      1. 9.1.1Turning on the LEDs
    2. 9.2Typical Application
      1. 9.2.1Design Requirements
      2. 9.2.2Detailed Design Procedure
        1. 9.2.2.1Adjusting Output Current
      3. 9.2.3Application Curve
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1Layout Guidelines
    2. 11.2Layout Example
  12. 12Device and Documentation Support
    1. 12.1Community Resources
    2. 12.2Trademarks
    3. 12.3Electrostatic Discharge Caution
    4. 12.4Glossary
  13. 13Mechanical, Packaging, and Orderable Information

1 Features

  • 16 Constant Current Output Channels
  • Matches Industry Standard IOUT to External Resistor Ratio
  • Constant Output Current Invariant to Load Voltage Change
  • Output Current Accuracy:
    • Between Channels: < ±5% (Maximum)
    • Between ICs: < ±6% (Maximum)
  • Constant Output Current Range:
    3 mA to 45 mA
  • Output Current Adjusted By External Resistor
  • Fast Response of Output Current, OE (Minimum): 100 ns
  • 30 MHz Clock Frequency
  • Schmitt-Trigger Inputs
  • 3.0 V to 5.5 V Supply Voltage
  • Thermal Shutdown for Overtemperature Protection
  • ESD Performance: 1 kV HBM

2 Applications

  • Gaming Machine / Entertainment
  • General LED Applications
  • LED Display Systems
  • Signs LED Lighting
  • White Goods

3 Description

The TLC59025 device is designed for LED displays and LED lighting applications. The TLC59025 contains a 16-bit shift register and data latches, which convert serial input data into parallel output format. At the TLC59025 output stage, 16 regulated-current ports provide uniform and constant current for driving LEDs within a wide range of VF variations. Used in system design for LED display applications (for example, LED panels), the TLC59025 provides great flexibility and device performance. Users can adjust the output current from 3 mA to 45 mA through an external resistor, Rext, which gives flexibility in controlling the light intensity of LEDs. TLC59025 is designed for up to 17 V at the output port. The high clock frequency, 30 MHz, also satisfies the system requirements of high-volume data transmission.

The serial data is transferred into TLC59025 through SDI, shifted in the shift register, and transferred out through SDO. LE can latch the serial data in the shift register to the output latch. OE enables the output drivers to sink current.

Device Information (1)

PART NUMBERPACKAGEBODY SIZE (NOM)
TLC59025SSOP (24)8.65 mm × 3.90 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

Typical Application Diagram

TLC59025 TLC59025_Typ_App.jpg

IOUT vs REXT

TLC59025 g_iout_rext_lvs934.gif