The LM3431 is a 3-channel constant current LED driver with an integrated boost controller. It is designed to drive high-brightness LEDs for backlighting applications. The device features an input voltage range of 4.5V to 36V and can support an output voltage up to 40V. It includes internal features such as adjustable switching frequency, soft start, and thermal shutdown, supporting both analog and PWM dimming methods.
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| Input Voltage (Min) | 4.5V |
| Input Voltage (Max) | 36V |
| Output Voltage (Max) | 40V |
| Output Current (Max) per Channel | 0.6A |
| Number of Channels | 3channels |
| Quiescent Current (Typ) | 4mA |
| Operating Temperature Range | -40 to 125°C |
| Topology | Boost, Boost with Current Sink |
| RoHS | Compliant |
| Aec Rating | Q100 (for Q1 versions) |
Download the complete datasheet for Texas Instruments LM3431 to view detailed technical specifications.
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