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Kinetic Technologies KTD257M 39V/26V Step-Up LED Driver is a versatile constant current LED driver with a high-efficiency DC-DC step-up boost converter architecture. A low-side power MOSFET is integrated into the device, minimizing the total number of external components. Unique technology and a high 0.9A current limitallow KTD257M to drive up to 39V output (ten LEDs in series). KTD257M can deliver 160mA total current with three series LEDs per string. The driver can also maximize the current capability while achieving high conversion efficiency. The optimized 900kHz switching frequency results in a small external component size. The driver allows a wide range of PWM dimming frequencies through the EN pin.
Various protection features are built into the KTD257M, including cycle-by-cycle input current limit protection, LED open-circuit (output over voltage) protection, and thermal shutdown protection. The leakage current in shutdown mode is less than 1µA. The Kinetic Technologies KTD257M is available in a RoHS and green-compliant 6-lead TSOT23 package.
