Driver. TLC5952 Datasheet

TLC5952 Datasheet PDF


Part

TLC5952

Description

24-Channel Constant-Current LED Driver

Manufacture

etcTI

Page 30 Pages
Datasheet
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TLC5952 Datasheet
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TLC5952
SBVS129A – MAY 2009 – REVISED JULY 2018
24-Channel, Constant-Current LED Driver With
Global Brightness Control And LED Open-Short Detection
1 Features
1 24-Channel Constant-Current Sink Output With
On-Off Control
• Current Capability:
– 35 mA for 16 Channels
– 26.2 mA for 8 Channels
• Global Brightness Control (BC) for Each Color
Group: 7-Bit (128 Step), Three Groups
• LED Power-Supply Voltage up to 15 V
• VCC = 3 V to 5.5 V
• Constant-Current Accuracy:
– Channel-to-Channel = ±1%
– Device-to-Device = ±3%
• CMOS Logic Level I/O
• Data Transfer Rate: 35 MHz
• BLANK Pulse Duration: 15 ns
• Open-Load, Shorted-Load, and Overtemperature
Detection
• Thermal Shutdown (TSD) With Auto Restart
• Delay Switching to Prevent Inrush Current
• Operating Temperature: –40°C to 85°C
• Packages: HTSSOP-32, QFN-32
2 Applications
• Full-Color LED Displays
• LED Signboards
3 Description
The TLC5952 device is a 24-channel, constant-
current sink driver. Each channel can be turned on or
off with internal register data. The output channels
are grouped into three groups of eight channels each.
Each channel group has a 128-step global brightness
control (BC) function. Both on-off data and BC are
writable via a serial interface. The maximum current
value of all 24 channels is set by a single external
resistor.
The TLC5952 device has three error detection
circuits: LED-open detection (LOD), LED-shorted
detection (LSD), and a thermal error flag (TEF). The
error detection is read via a serial interface.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TLC5952
HTSSOP (32)
11.00 mm × 6.20 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Typical Application Circuit (Multiple Daisy-Chained TLC5952s)
VLED
+
¼
¼
¼
DATA
SCLK
LAT
BLANK
Controller
RIREF
¼¼
¼OUTR0
OUTB7
SIN SOUT
SCLK
LAT
BLANK
TLC5952
IC1
VCC
VCC
GND
IREF
RIREF
¼
¼OUTR0
OUTB7
SIN SOUT
SCLK
LAT
BLANK
TLC5952
ICn
VCC
VCC
GND
IREF
ERROR
READ
3
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.

TLC5952 Datasheet
TLC5952
SBVS129A – MAY 2009 – REVISED JULY 2018
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Pin Configuration and Functions ......................... 3
6 Specifications......................................................... 4
6.1 Absolute Maximum Ratings .................................... 4
6.2 ESD Ratings ............................................................ 4
6.3 Recommended Operating Conditions...................... 5
6.4 Thermal Information .................................................. 5
6.5 Electrical Characteristics.......................................... 6
6.6 Switching Characteristics......................................... 8
6.7 Typical Characteristics ............................................ 11
7 Parameter Measurement Information ................ 15
7.1 Pin Equivalent Input and Output Schematic
Diagrams.................................................................. 15
7.2 Test Circuits ............................................................ 15
8 Detailed Description ............................................ 16
8.1 Overview ................................................................. 16
8.2 Functional Block Diagram ....................................... 16
8.3 Feature Description................................................. 17
8.4 Device Functional Modes........................................ 19
9 Power Supply Recommendations...................... 25
10 Device and Documentation Support ................. 26
10.1 Receiving Notification of Documentation Updates 26
10.2 Community Resources.......................................... 26
10.3 Trademarks ........................................................... 26
10.4 Electrostatic Discharge Caution ............................ 26
10.5 Glossary ................................................................ 26
11 Mechanical, Packaging, and Orderable
Information ........................................................... 26
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Original (May 2009) to Revision A
Page
• Changed "Pulse Width" to "Pulse Duration" ........................................................................................................................... 1
• Added the Device Information table ....................................................................................................................................... 1
• Deleted pinout diagram for the RHB package........................................................................................................................ 3
• Deleted the RHB column and corresponding table note from the Pin Functions table .......................................................... 3
• Changed "free-air" in the Absolute Maximum Ratings condition statement to "junction"....................................................... 4
• Deleted ESD ratings from the Absolute Maximum Ratings table........................................................................................... 4
• Deleted the Dissipation Ratings section ................................................................................................................................ 4
• Added the ESD Ratings section ............................................................................................................................................. 4
• Changed TWH0 to tWH0 in the Recommended Operating Conditions table .............................................................................. 5
• Added the Thermal Information table to the data sheet ........................................................................................................ 5
• Changed Condition statement of Electrical Characteristics table from TA = –40°C to 85°C to TJ = –40°C to 150°C ............ 6
• Changed the Electrical Characteristics table to combine multiple symbols for the Supply current and Constant-
output current parameters ...................................................................................................................................................... 6
• Changed MAX value of VIREEF in Electrical Characteristics from 1.23 V to 1.25 V ................................................................ 7
• Changed Txx to txx at multiple locations in Figure 1 ................................................................................................................ 8
• Changed Txx to txx at multiple locations in Figure 3 .............................................................................................................. 10
• Changed Figure 6................................................................................................................................................................. 11
• Added the Overview section................................................................................................................................................. 16
• Added the Device Functional Modes section ....................................................................................................................... 19
• Added the Device and Documentation Support and Mechanical, Packaging, and Orderable Information sections............ 26
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Product Folder Links: TLC5952
Copyright © 2009–2018, Texas Instruments Incorporated


Features Datasheet pdf Product Folder Order Now Technical Doc uments Tools & Software Support & Com munity TLC5952 SBVS129A – MAY 2009 – REVISED JULY 2018 24-Channel, Const ant-Current LED Driver With Global Brig htness Control And LED Open-Short Detec tion 1 Features •1 24-Channel Consta nt-Current Sink Output With On-Off Cont rol • Current Capability: – 35 mA f or 16 Channels – 26.2 mA for 8 Channe ls • Global Brightness Control (BC) f or Each Color Group: 7-Bit (128 Step), Three Groups • LED Power-Supply Volta ge up to 15 V • VCC = 3 V to 5.5 V Constant-Current Accuracy: – Channe l-to-Channel = ±1% – Device-to-Devic e = ±3% • CMOS Logic Level I/O • D ata Transfer Rate: 35 MHz • BLANK Pul se Duration: 15 ns • Open-Load, Short ed-Load, and Overtemperature Detection • Thermal Shutdown (TSD) With Auto Re start • Delay Switching to Prevent In rush Current • Operating Temperature: –40°C to 85°C • Packages: HTSSOP -32, QFN-32 2 Applications • Full-Color LED Displays • LED Signboards 3 Description The TLC5952 device is a.
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