SLLS402 is a LED driver chip released by Texas Instruments of the United States. It has 80mA (current sink) x 16 bits, a constant current output range of 5 to 80mA, ±4% constant current accuracy, a 0.4V to 0.7V input voltage, 1024 gray scale display, pulse width control 1024 steps, brightness adjustment, gray scale clock generation, protection functions, etc.
The TLC5911 is a constant‑current LED driver that integrates a shift register, data latch, and gray‑scale control circuitry. It supports up to 80 mA output current across 16 bits, includes watchdog (WDT) and thermal shutdown (TSD) functions, and offers LED open‑detection (LOD) for fault monitoring.
The document details pin assignments, functional block diagrams, absolute maximum ratings, recommended operating conditions, and mechanical dimensions for the 100‑pin PowerPAD™ PLCC package. It also includes the standard Texas Instruments warranty and legal notices.
| Maximum output current | 80 mA |
|---|---|
| Gray‑scale steps | 1024 |
| Package type | 100‑pin PowerPAD™ PLCC |
The watchdog timer (WDT) turns the constant‑current output off when the scan signal stops during dynamic scanning.
LED open detection (LOD) provides an error signal when an LED is disconnected.