Low-Power 16-Channel Constant-Current LED Sink Driver - TLC5925

TLC5925 (ACTIVE)

Low-Power 16-Channel Constant-Current LED Sink Driver

 

Description

The TLC5925 is designed for LED displays and LED lighting applications. The TLC5925 contains a 16-bit shift register and data latches, which convert serial input data into parallel output format. At the TLC5925 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 (such as, LED panels), the TLC5925 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. TLC5925 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 TLC5925 via SDI, shifted in the shift register, and transferred out via SDO. LE can latch the serial data in the shift register to the output latch. OE enables the output drivers to sink current.

Features

  • 16 Constant-Current Output Channels
  • Constant Output Current Invariant to Load Voltage
    Change
  • Excellent Output Current Accuracy:
    • Between Channels: < ±4% (Max)
    • Between ICs: < ±6% (Max)
  • Constant Output Current Range:
    3 mA to 45 mA
  • Output Current Adjusted By External Resistor
  • Fast Response of Output Current, OE (Min):
    100 ns
  • 30-MHz Clock Frequency
  • Schmitt-Trigger Inputs
  • 3.3-V to 5-V Supply Voltage
  • Thermal Shutdown for Overtemperature
    Protection
  • ESD Performance: 1-kV HBM

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Special Features
Analog Dimming Steps
Data Transfer Rate (Typ) (MHz)
Ch to Ch Accuracy (Typ) (+/- %)
Rating
Operating Temperature Range (C)
Pin/Package
TLC5925 TLC59025 TLC5916 TLC5917 TLC5926 TLC5927
Thermal Shutdown    Thermal Shutdown    LED Open Detection
LED Short to Ground Detection
Thermal Shutdown   
LED Open Detection
LED Short to Ground Detection
LED Short to VLED Detection
Thermal Shutdown   
LED Open Detection
LED Short to Ground Detection
Thermal Shutdown   
LED Open Detection
LED Short to Ground Detection
LED Short to VLED Detection
Thermal Shutdown   
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24SOIC
24SSOP
24TSSOP   
24SSOP    16SOIC
16PDIP
16TSSOP   
16SOIC
16TSSOP
16PDIP   
24HTSSOP
24SSOP
24SOIC   
24SOIC
24SSOP
24HTSSOP