Datasheet TLC5940 (Texas Instruments) - 7

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TLC5940 www.ti.com
SLVS515D – DECEMBER 2004 – REVISED NOVEMBER 2015
6.5 Electrical Characteristics
VCC = 3 V to 5.5 V, TA = –40°C to 85°C (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
VOH High-level output voltage IOH = -1 mA, SOUT VCC –0.5 V VOL Low-level output voltage IOL = 1 mA, SOUT 0.5 V VI = VCC or GND; BLANK, DCPRG, GSCLK, SCLK, SIN, –1 1 XLAT μA VI = GND; VPRG –1 1 II Input current VI = VCC; VPRG 50 VI = 22 V; VPRG; DCPRG = VCC 4 10 mA No data transfer, all output OFF, 0.9 6 VO = 1 V, R(IREF) = 10 kΩ No data transfer, all output OFF, 5.2 12 VO = 1 V, R(IREF) = 1.3 kΩ ICC Supply current mA Data transfer 30MHz, all output ON, 16 25 VO = 1 V, R(IREF) = 1.3 kΩ Data transfer 30MHz, all output ON, 30 60 VO = 1 V, R(IREF) = 640 Ω Constant sink current (see IO(LC) All output ON, VO = 1 V, R(IREF) = 640 Ω 54 61 69 mA Figure 10) All output OFF, VO = 15 V, R(IREF) = 640 Ω, Ilkg Leakage output current 0.1 μA OUT0 to OUT15 All output ON, VO = 1 V, R(IREF) = 640 Ω, ±1% ±4% OUT0 to OUT15, –20°C to 85°C All output ON, VO = 1V, R(IREF) = 640 Ω, ±1% ±8% OUT0 to OUT15(1) Constant sink current error ΔIO(LC0) (see Figure 10) All output ON, VO = 1V, R(IREF) = 320 Ω, ±1% ±6% OUT0 to OUT15, –20°C to 85°C All output ON, VO = 1V, R(IREF) = 320 Ω, ±1% ±8% VCC = 4.5 V to 5.5 V, OUT0 to OUT15(1) Constant sink current error Device to device, Averaged current from OUT0 to –2% ΔIO(LC1) ±4% (see Figure 10) OUT15, R(IREF) = 1920 Ω (20 mA)(2) +0.4% Constant sink current error Device to device, Averaged current from OUT0 to –2.7% ΔIO(LC2) ±4% (see Figure 10) OUT15, R(IREF) = 480 Ω (80 mA)(2) +2% All output ON, VO = 1V, R(IREF) = 640 Ω ±1 ±4 %/V OUT0 to OUT15, VCC = 3 V to 5.5 V(3) ΔIO(LC3) Line regulation (see Figure 10) All output ON, VO = 1V, R(IREF) = 320 Ω , ±1 ±6 %/V OUT0 to OUT15, VCC = 3 V to 5.5 V(3) All output ON, VO = 1 V to 3 V, R(IREF) = 640 Ω, ±2 ±6 %/V OUT0 to OUT15(4) Load regulation (see ΔIO(LC4) Figure 10) All output ON, VO = 1 V to 3 V, R(IREF) = 320 Ω, ±2 ±8 %/V OUT0 to OUT15(4) T(TEF) Thermal error flag threshold Junction temperature(5) 150 170 °C V(LED) LED open detection threshold 0.3 0.4 V Reference voltage V(IREF) R(IREF) = 640 Ω 1.20 1.24 1.28 V output (1) The deviation of each output from the average of OUT0-15 constant current. It is calculated by Equation 1 in Test Parameter Equations. (2) The deviation of average of OUT1-15 constant current from the ideal constant-current value. It is calculated by Equation 2 in Test Parameter Equations. The ideal current is calculated by Equation 3 in Test Parameter Equations. (3) The line regulation is calculated by Equation 4 in Test Parameter Equations. (4) The load regulation is calculated by Equation 5 in Test Parameter Equations. (5) Not tested. Specified by design Copyright © 2004–2015, Texas Instruments Incorporated Submit Documentation Feedback 7 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