The TPS92638-Q1 is an eight-channel linear LED driver designed for automotive applications. It supports up to eight strings of LEDs with a total current of up to 70 mA per channel. The device features constant current regulation set by reference resistors, supporting dual-level current (Stop/Tail) applications. It includes integrated protection such as open- and shorted-LED detection, thermal shutdown failure reporting, and a temperature-current foldback mechanism to prevent thermal shutdown by reducing LED current as junction temperature rises.
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Texas Instruments TPS92638-Q1 technical specifications.
| Number of Channels | 8Channels |
| Input Voltage (Min) | 5V |
| Input Voltage (Max) | 40V |
| Output Current (Max per channel) | 70mA |
| Total Output Current (Parallel Mode) | 560mA |
| Accuracy | ±3%% |
| Operating Junction Temperature | -40 to 150°C |
| Quiescent Current (Typ) | 0.6mA |
| Automotive Qualification | AEC-Q100 Qualified |
| Temperature Grade | Grade 1 (-40°C to 125°C Ambient) |
| Functional Safety | Functional Safety-Capable |
| Esd Hbm | Level H2 |
| Esd Cdm | Level C3B |
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