TLC5940-EP
16-Channel LED DriverThe TLC5940-EP is a 16-channel led driver from Texas Instruments. View the full TLC5940-EP datasheet below including electrical characteristics, absolute maximum ratings.
Manufacturer
Texas Instruments
Category
LEDsOverview
Part: TLC5940 from Texas Instruments
Type: 16-Channel LED Driver
Description: A 16-channel, constant-current sink LED driver with 12-bit (4096 steps) grayscale PWM control, 6-bit (64 steps) dot correction, and a maximum constant-current sink capability of 120 mA per channel.
Operating Conditions:
- Supply voltage: 3 V to 5.5 V
- Operating temperature: -40 to 85 °C
- LED power supply voltage: up to 17 V
- Data transfer rate: 30 MHz
Absolute Maximum Ratings:
- Max supply voltage: 6 V
- Max continuous current: 130 mA
- Max storage temperature: 150 °C
Key Specs:
- Number of channels: 16
- Grayscale PWM control: 12 bit (4096 Steps)
- Dot correction: 6 bit (64 Steps)
- Constant output current (VCC < 3.6 V): 60 mA
- Constant output current (VCC > 3.6 V): 120 mA
- Data shift clock frequency: up to 30 MHz
- Grayscale clock frequency: up to 30 MHz
- Thermal error flag threshold: 150 to 170 °C
Features:
- 16 Channels
- 12 bit (4096 Steps) Grayscale PWM Control
- Dot Correction (6 bit, 64 Steps) storable in Integrated EEPROM
- Drive Capability (Constant-Current Sink) 0 mA to 120 mA
- LED Power Supply Voltage up to 17 V
- Serial Data Interface
- Error Information (LOD: LED Open Detection, TEF: Thermal Error Flag)
Applications:
- Monocolor, Multicolor, Full-Color LED Displays
- LED Signboards
- Display Backlighting
- General, High-Current LED Drive
Package:
- PDIP (28)
- HTSSOP (28)
- VQFN (32)
Features
- 1 · 16 Channels
- 12 bit (4096 Steps) Grayscale PWM Control
- Dot Correction
- -6 bit (64 Steps)
- -Storable in Integrated EEPROM
- Drive Capability (Constant-Current Sink)
- -0 mA to 60 mA (VCC < 3.6 V)
- -0 mA to 120 mA (VCC > 3.6 V)
- LED Power Supply Voltage up to 17 V
- VCC = 3 V to 5.5 V
- Serial Data Interface
- Controlled In-Rush Current
- 30 MHz Data Transfer Rate
- CMOS Level I/O
- Error Information
- -LOD: LED Open Detection
- -TEF: Thermal Error Flag
Applications
- Monocolor, Multicolor, Full-Color LED Displays
- LED Signboards
- Display Backlighting
- General, High-Current LED Drive
Pin Configuration
NC - No internal connection
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 | |
|---|---|---|---|---|---|---|
| V OH | High-level output voltage | I OH = -1 mA, SOUT | V CC -0.5 | V | ||
| V OL | Low-level output voltage | I OL = 1 mA, SOUT V I = V CC or GND; BLANK, DCPRG, GSCLK, SCLK, SIN, XLAT | -1 | 0.5 1 | V | |
| I I | Input current | V I = GND; VPRG V I = V CC ; VPRG | -1 | 1 50 | μ A | |
| V I = 22 V; VPRG; DCPRG = V CC No data transfer, all output OFF, V O = 1 V, R (IREF) = 10 k Ω No data transfer, all output OFF, V O = 1 V, R (IREF) = 1.3 k Ω | 4 0.9 5.2 | 10 6 12 | mA | |||
| I CC | Supply current | Data transfer 30MHz, all output ON, V O = 1 V, R (IREF) = 1.3 k Ω Data transfer 30MHz, all output ON, V O = 1 V, R (IREF) = 640 Ω | 16 30 | 25 60 | mA | |
| I O(LC) | Constant sink current (see Figure 10) | All output ON, V O = 1 V, R (IREF) = 640 Ω | 54 | 61 | 69 | mA |
| I lkg | Leakage output current | All output OFF, V O = 15 V, R (IREF) = 640 Ω , OUT0 to OUT15 All output ON, V O = 1 V, R (IREF) = 640 Ω , OUT0 to OUT15, -20°C to 85°C | ±1% | 0.1 ±4% | μ A | |
| Constant sink current error | All output ON, V O = 1V, R (IREF) = 640 Ω , OUT0 to OUT15 (1) | ±1% | ±8% | |||
| Δ I O(LC0) | (see Figure 10) | All output ON, V O = 1V, R (IREF) = 320 Ω , OUT0 to OUT15, -20°C to 85°C All output ON, V O = 1V, R (IREF) = 320 Ω , V CC = 4.5 V to 5.5 V, OUT0 to OUT15 (1) | ±1% ±1% | ±6% ±8% | ||
| Δ I O(LC1) | Constant sink current error (see Figure 10) | Device to device, Averaged current from OUT0 to OUT15, R (IREF) = 1920 Ω (20 mA) (2) | -2% +0.4% | ±4% | ||
| Δ I O(LC2) | Constant sink current error (see Figure 10) | Device to device, Averaged current from OUT0 to OUT15, R (IREF) = 480 Ω (80 mA) (2) | -2.7% +2% | ±4% | ||
| All output ON, V O = 1V, R (IREF) = 640 Ω OUT0 to OUT15, V CC = 3 V to 5.5 V (3) | ±1 | ±4 | %/V | |||
| Δ I O(LC3) | Line regulation (see Figure 10) | All output ON, V O = 1V, R (IREF) = 320 Ω , OUT0 to OUT15, V CC = 3 V to 5.5 V (3) | ±1 | ±6 | %/V | |
| Δ I O(LC4) | Load regulation (see Figure 10) | All output ON, V O = 1 V to 3 V, R (IREF) = 640 Ω , OUT0 to OUT15 (4) | ±2 | ±6 | %/V | |
| All output ON, V O = 1 V to 3 V, R (IREF) = 320 Ω , OUT0 to OUT15 (4) | ±2 | ±8 | %/V | |||
| T (TEF) | Thermal error flag threshold | Junction temperature (5) | 150 | 170 | °C | |
| V (LED) | LED open detection threshold | 0.3 | 0.4 | V | ||
| V (IREF) | Reference voltage output | R (IREF) = 640 Ω | 1.20 | 1.24 | 1.28 | V |
Absolute Maximum Ratings
over operating free-air temperature range (unless otherwise noted) (1)
| MIN | MAX | UNIT | ||
|---|---|---|---|---|
| Input voltage (2) | VCC | -0.3 | 6 | V |
| Input voltage (2) | V (BLANK) , V (DCPRG) , V (SCLK) , V (XLAT) , V (SIN) , V (GSCLK) , V (IREF) | -0.3 | V CC +0.3 | V |
| Output voltage | V (SOUT) , V (XERR) | -0.3 | V CC +0.3 | V |
| Output voltage | V (OUT0) to V (OUT15) | -0.3 | 18 | V |
| Output current (dc) | 130 | mA | ||
| EEPROM program range | V (VPRG) | -0.3 | 24 | V |
| EEPROM write cycles | 50 | - | ||
| Storage temperature, T stg | -55 | 150 | °C |
Recommended Operating Conditions
| MIN | NOM | MAX | UNIT | |||
|---|---|---|---|---|---|---|
| DC CHARACTERISTICS | DC CHARACTERISTICS | DC CHARACTERISTICS | ||||
| V CC | Supply Voltage | Supply Voltage | 3 | 5.5 | V | |
| V O | Voltage applied to output (OUT0-OUT15) | Voltage applied to output (OUT0-OUT15) | 17 | V | ||
| V IH | High-level input voltage | High-level input voltage | 0.8 V CC | V CC | V | |
| V IL | Low-level input voltage | Low-level input voltage | GND | 0.2 V CC | V | |
| I OH | High-level output current | V CC = 5 V at SOUT | -1 | mA | ||
| I OL | Low-level output current | V CC = 5 V at SOUT, XERR | 1 | mA | ||
| I OLC | Constant output current | OUT0 to OUT15, V CC < 3.6 V OUT0 to OUT15, V CC > 3.6 V | 60 120 | mA mA | ||
| V (VPRG) | EEPROM program voltage | EEPROM program voltage | 20 | 22 | 23 | V |
| T A | Operating free-air temperature range | Operating free-air temperature range | -40 | 85 | °C | |
| AC CHARACTERISTICS V CC = 3 V to 5.5 V, T A = -40°C to 85°C (unless otherwise noted) | AC CHARACTERISTICS V CC = 3 V to 5.5 V, T A = -40°C to 85°C (unless otherwise noted) | AC CHARACTERISTICS V CC = 3 V to 5.5 V, T A = -40°C to 85°C (unless otherwise noted) | ||||
| f (SCLK) | Data shift clock frequency | SCLK | 30 | MHz | ||
| f (GSCLK) | Grayscale clock frequency | GSCLK | 30 | MHz | ||
| t wh0 /t wl0 | SCLK pulse duration | SCLK = H/L (see Figure 11) | 16 | ns | ||
| t wh1 /t wl1 | GSCLK pulse duration | GSCLK = H/L (see Figure 11) | 16 | ns | ||
| t wh2 | XLAT pulse duration | XLAT = H (see Figure 11) | 20 | ns | ||
| t wh3 | BLANK pulse duration | BLANK = H (see Figure 11) | 20 | ns |
Thermal Information
| TLC5940 | TLC5940 | ||
|---|---|---|---|
| THERMAL METRIC | (1) | PWP (HTSSOP) | RHB (VQFN) |
| 28 PINS | 32 PINS | ||
| R θ JA | Junction-to-ambient thermal resistance | 36.7 | 34.3 |
| R θ JC(top) | Junction-to-case (top) thermal resistance | 18.9 | 36.8 |
| R θ JB | Junction-to-board thermal resistance | 15.9 | 8.5 |
| ψ JT | Junction-to-top characterization parameter | 0.6 | 0.3 |
| ψ JB | Junction-to-board characterization parameter | 15.8 | 8.7 |
| R θ JC(bot) | Junction-to-case (bottom) thermal resistance | 2.3 | 1.6 |
Typical Application
The device is a 16-channel, constant sink current, LED driver. This device can be connected in series to drive many LED lamps with only a few controller ports. Output current control data, dot correction data and PWM control data can be written from the SIN input terminal.
Related Variants
The following components are covered by the same datasheet.
| Part Number | Manufacturer | Package |
|---|---|---|
| TLC5940 | Texas Instruments | — |
| TLC5940PWP | Texas Instruments | — |
| TLC5940PWPR | Texas Instruments | — |
| TLC5940PWPR.A | Texas Instruments | — |
| TLC5940PWPR.B | Texas Instruments | — |
| TLC5940PWPRG4 | Texas Instruments | — |
| TLC5940RHBR | Texas Instruments | — |
| TLC5940RHBR.A | Texas Instruments | — |
| TLC5940RHBR.B | Texas Instruments | — |
| TLC5940RHBRG4 | Texas Instruments | — |
| TLC5940S | Texas Instruments | — |
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