Datasheet TLC5940 (Texas Instruments) - 9

TLC5940 www.ti.com
SLVS515D – DECEMBER 2004 – REVISED NOVEMBER 2015
6.7 Typical Characteristics 4 k 10 k TLC5940PWP 7.68 kΩ PowerPAD Soldered
W
TLC5940RHB - 3 k EF) R (I TLC5940NT ,R 1.92 kΩ 1 k 0.96 kΩ 2 k 0.64 kΩ TLC5940PWP 0.48 kΩ PowerPAD Unsoldered 0.38 kΩ PowerDissipationRate-mW ReferenceResistor 1 k 0.32 kΩ 100 0 0 20 40 60 80 100 120 -40 -20 0 20 40 60 80 100 I − Output Current − mA O T − Free-Air Temperature − C o A Figure 1. Reference Resistor vs Output Current Figure 2. Power Dissipation Rate vs Free-Air Temperature 140 65 T = 25
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C, I = 60 mA, A I = 120 mA O O 64 V = 5 V V = 5 V CC CC 120 T = 85 C A
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63 I = 100 mA O 100 62 I = 80 mA O 61 80 60 I = 60 mA T = 25 C O A
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T = -40 C A
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60 59 -OutputCurrent-mA I = 40 mA -OutputCurrent-mA O O O 58 I I 40 I = 20 mA 57 O 20 56 I = 5 mA O 55 0 0 0.5 1 1.5 2 2.5 3 0 0.5 1 1.5 2 2.5 3 V - Output Voltage - V O V - Output Voltage - V O Figure 3. Output Current vs Output Voltage Figure 4. Output Current vs Output Voltage 8 8 I = 60 mA T = 25
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C, O A 6 6 V = 5 V CC 4 4 V = 3.3 V CC 2 2 0 0 -2 -2 -ConstantOutputCurrent-% -ConstantOutputCurrent-% -4 V = 5 V -4 LC CC LC I O I O Δ -6 Δ -6 -8 -8 -40 -20 0 20 40 60 80 100 0 20 40 60 80 T - Ambient Temperature - C I - Output Current - mA A
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O Figure 6. Constant Output Current, ΔI Figure 5. Constant Output Current, ΔI OLC OLC vs Output Current vs Ambient Temperature
Copyright © 2004–2015, Texas Instruments Incorporated Submit Documentation Feedback 9 Product Folder Links: TLC5940 Document Outline 1 Features 2 Applications 3 Description Table of Contents 4 Revision History 5 Pin Configuration and Functions 6 Specifications 6.1 Absolute Maximum Ratings 6.2 ESD Ratings 6.3 Recommended Operating Conditions 6.4 Thermal Information 6.5 Electrical Characteristics 6.6 Switching Characteristics 6.7 Typical Characteristics 7 Parameter Measurement Information 7.1 Test Parameter Equations 8 Detailed Description 8.1 Overview 8.2 Functional Block Diagram 8.3 Feature Description 8.3.1 Serial Interface 8.3.2 Error Information Output 8.3.3 TEF: Thermal Error Flag 8.3.4 LOD: LED Open Detection 8.3.5 Delay Between Outputs 8.3.6 Output Enable 8.3.7 Setting Maximum Channel Current 8.4 Device Functional Modes 8.4.1 Operating Modes 8.4.2 Setting DOT Correction 8.4.3 Setting Grayscale 8.4.4 Status Information Output 8.4.5 Grayscale PWM Operation 9 Application and Implementation 9.1 Application Information 9.2 Typical Application 9.2.1 Design Requirements 9.2.2 Detailed Design Procedure 9.2.2.1 Serial Data Transfer Rate 9.2.2.2 Grayscale (GS) Data 9.2.3 Application Curve 10 Power Supply Recommendations 11 Layout 11.1 Layout Guidelines 11.2 Layout Example 11.3 Power Dissipation Calculation 12 Device and Documentation Support 12.1 Community Resources 12.2 Trademarks 12.3 Electrostatic Discharge Caution 12.4 Glossary 13 Mechanical, Packaging, and Orderable Information