1 Features

1• 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 high•

Schmitt-Trigger Inputs

• 3.3-V to 5-V Supply Voltage

• Thermal Shutdown for Overtemperature

Protection

• ESD Performance: 1-kV HBM

2 Applications

• Gaming Machine and Entertainment

• General LED Applications

• LED Display Systems

• Signs LED Lighting

• White Goods

3 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.