TLC5925_15 Datasheet, PDF (1/28 Pages) Texas Instruments – Low-Power 16-Channel Constant-Current LED Sink Driver

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TLC5925
SLVS765B – OCTOBER 2008 – REVISED SEPTEMBER 2015
TLC5925 Low-Power 16-Channel Constant-Current LED Sink Driver
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
• 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,
R_ext, 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.
Device Information ⁽¹⁾
PART NUMBER PACKAGE
BODY SIZE (NOM)
SSOP (24)
8.65 mm × 3.90 mm
TLC5925
SOIC (24)
15.40 mm × 7.50 mm
TSSOP (24)
7.80 mm × 4.40 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Typical Application
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.