PT4115B89E

The PT4115B89E from Crpowtech is a continuous conduction mode inductive step-down converter designed for efficiently driving single or multiple series-connected LEDs. It operates within a wide input voltage range of 6V to 30V and provides an externally adjustable output current of up to 1.2A. This LED driver is suitable for applications requiring up to 30 watts of output power, depending on the supply voltage and external components.

Key features include a simple low parts count, a single pin for on/off and brightness control using DC voltage or PWM, and high efficiency up to 97%. The device incorporates a high-side output current sensing circuit and accepts a dedicated DIM input for dimming control. Applying a voltage of 0.3V or lower to the DIM pin turns the output off, switching the device into a low current standby state.

The PT4115B89E is available in SOT89-5 and ESOP8 packages, with operating temperature ranges from -40°C to 85°C. The ESOP8 package is noted for large output power applications. Its inherent open-circuit LED protection and adjustable constant LED current make it a versatile component for various lighting solutions.

Applications include low voltage halogen replacement LEDs, automotive lighting, low voltage industrial lighting, LED back-up lighting, illuminated signs, SELV lighting, and LCD TV backlighting.