The TPS92550 is a constant current buck LED driver micro-module that integrates all power components including the power inductor. It drives up to 10 LEDs in a single string (14W max) with a wide input voltage range of 4.5V to 36V. The module operates at a constant 400kHz switching frequency and provides up to 96% power efficiency. It features a fast control loop for 256-step PWM dimming and includes protection for thermal shutdown, input under-voltage lockout, and LED open/short circuits.
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Texas Instruments TPS92550 technical specifications.
| Input Voltage (Min) | 4.5V |
| Input Voltage (Max) | 36V |
| Output Current (Max) | 0.45A |
| Switching Frequency | 400kHz |
| Efficiency | 96% |
| Operating Temperature Range | -40 to 125°C |
| Number of Channels | 1count |
| Dimming Method | PWM, AnalogType |
| RoHS | Compliant |
| Emi Standard | EN55015 |
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