The TLC5945 is a 16-channel, constant-current sink, LED driver. Each channel has an individually adjustable 4096-step grayscale PWM brightness control and a 64-step constant-current sink (dot correction). The dot correction adjusts the brightness variations between LED channels and other LED drivers. Both grayscale control and dot correction are accessible via a serial interface. A single external resistor sets the maximum current value of all 16 channels.
The TLC5945 features two error information circuits. The LED open detection (LOD) indicates a broken or disconnected LED at an output terminal. The thermal error flag (TEF) indicates an overtemperature condition.
PowerPAD is a trademark of Texas Instruments.
| Features |
| Analog dimming steps |
| Data transfer rate (Typ) (MHz) |
| Ch to ch accuracy (Typ) (+/- %) |
| Package Group |
| Package size: mm2:W x L (PKG) |
| Rating |
| Operating temperature range (C) |
| TLC5945 | TLC5940 | TLC59401 | TLC5941 | TLC5943 | TLC5944 | TLC5946 | TLC59461 | TLC59482 | TLC5948A | TLC5949 |
|---|---|---|---|---|---|---|---|---|---|---|
|
Dot Correction Error Flag Fault Detection LED Open Detection LED Short to Ground Detection LED Short to VLED Detection PWM LED Driver Power Good |
Dot Correction Error Flag Fault Detection LED Open Detection LED Short to Ground Detection LED Short to VLED Detection PWM LED Driver Power Good |
Dot Correction Error Flag Fault Detection LED Open Detection LED Short to Ground Detection LED Short to VLED Detection PWM LED Driver Power Good |
Dot Correction Error Flag Fault Detection LED Open Detection LED Short to Ground Detection LED Short to VLED Detection PWM LED Driver Power Good |
Error Flag Fault Detection LED Open Detection LED Short to Ground Detection LED Short to VLED Detection PWM LED Driver Power Good Thermal Shutdown |
Dot Correction Error Flag Fault Detection LED Open Detection LED Short to Ground Detection LED Short to VLED Detection PWM LED Driver Power Good Thermal Shutdown |
Dot Correction Error Flag Fault Detection LED Open Detection LED Short to Ground Detection LED Short to VLED Detection PWM LED Driver Power Good |
Dot Correction Error Flag Fault Detection LED Open Detection LED Short to Ground Detection LED Short to VLED Detection PWM LED Driver Power Good |
PWM LED Driver |
Dot Correction Error Flag Fault Detection LED Open Detection LED Short to Ground Detection LED Short to VLED Detection PWM LED Driver Power Good Thermal Shutdown |
Error Flag Fault Detection LED Open Detection LED Short to Ground Detection LED Short to VLED Detection PWM LED Driver Power Good Thermal Shutdown |
| 64 | 64 | 64 | 64 | 128 | 64 | 64 | 64 | 64 | 128 | 128 |
| 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 33 | 33 | 33 |
| 1 | 1 | 1 | 1 | 1.5 | 1 | 1 | 1 | 1 | 1.5 | 0.6 |
|
HTSSOP | 28
VQFN | 32 |
HTSSOP | 28
VQFN | 32 |
HTSSOP | 28
VQFN | 32 |
HTSSOP | 28
VQFN | 32 |
HTSSOP | 28
VQFN | 32 |
HTSSOP | 28
VQFN | 32 |
HTSSOP | 28
TSSOP | 28 VQFN | 32 |
HTSSOP | 28 | SSOP | 24 |
HTSSOP | 24
SSOP | 24 |
HTSSOP | 24
SSOP | 24 |
|
28HTSSOP: 43 mm2: 4.4 x 9.7 (HTSSOP | 28)
32VQFN: 25 mm2: 5 x 5 (VQFN | 32) |
28HTSSOP: 43 mm2: 4.4 x 9.7 (HTSSOP | 28)
32VQFN: 25 mm2: 5 x 5 (VQFN | 32) |
28HTSSOP: 43 mm2: 4.4 x 9.7 (HTSSOP | 28)
32VQFN: 25 mm2: 5 x 5 (VQFN | 32) |
28HTSSOP: 43 mm2: 4.4 x 9.7 (HTSSOP | 28)
32VQFN: 25 mm2: 5 x 5 (VQFN | 32) |
28HTSSOP: 43 mm2: 4.4 x 9.7 (HTSSOP | 28)
32VQFN: 25 mm2: 5 x 5 (VQFN | 32) |
28HTSSOP: 43 mm2: 4.4 x 9.7 (HTSSOP | 28)
32VQFN: 25 mm2: 5 x 5 (VQFN | 32) |
28HTSSOP: 43 mm2: 4.4 x 9.7 (HTSSOP | 28)
28TSSOP: 62 mm2: 6.4 x 9.7 (TSSOP | 28) 32VQFN: 25 mm2: 5 x 5 (VQFN | 32) |
28HTSSOP: 43 mm2: 4.4 x 9.7 (HTSSOP | 28) | 24SSOP: 52 mm2: 6 x 8.65 (SSOP | 24) |
24HTSSOP: 34 mm2: 4.4 x 7.8 (HTSSOP | 24)
24SSOP: 52 mm2: 6 x 8.65 (SSOP | 24) |
24HTSSOP: 34 mm2: 4.4 x 7.8 (HTSSOP | 24)
24SSOP: 52 mm2: 6 x 8.65 (SSOP | 24) |
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