The LD7535BL is a high efficiency, low loss, wide input voltage range SOT-23-6 RoHS switching controller manufactured by Leadtrend. The controller features a maximum guaranteed operating frequency of 1MHz and is designed for forward/flyback topologies, making it suitable for use in AC/DC power adapters, LED drivers, battery chargers, and other DC/DC converters. The device can detect whether the input voltage is above or below a certain threshold and automatically switch the output voltage accordingly. It also incorporates features such as cycle-by-cycle current and temperature protection and provides external voltage/current programming options. The LD7535BL is RoHS compliant and supports a wide temperature range making it suitable for both commercial and industrial applications.