PT4115B89E

The PT4115B89E from PowTech is a continuous conduction mode inductive step-down converter designed for driving single or multiple series-connected LEDs efficiently. It operates from an input supply voltage ranging from 6V to 30V and can deliver an externally adjustable output current of up to 1.2A. This LED driver IC is suitable for applications requiring high brightness and features a dimming input that accepts DC voltage or PWM signals for on/off and brightness control.

Key features include a wide input voltage range, high output current capability, and high efficiency up to 97%. The device incorporates an internal power switch and a high-side output current sensing circuit, allowing for adjustable constant LED current. It also includes inherent open-circuit LED protection. The PT4115B89E is available in SOT89-5 and ESOP8 packages, with the ESOP8 package being suitable for large output power applications.

This LED driver is well-suited for various lighting applications, including low voltage halogen replacement LEDs, automotive lighting, industrial lighting, LED back-up lighting, illuminated signs, SELV lighting, and LCD TV backlighting. Its design facilitates a simple low parts count solution for LED driving circuits.