The PT4211E23E is a single-channel LED driver with SOT-23-5 RoHS package from CR-PowTech. It is an extremely efficient controller with up to 85% efficiency and low -side control. It has a versatile interface that can work with Hall sensors, potentiometers, analog inputs and PWM signals. It has a wide input voltage range from 7V to 36V and features a maximum output current up to 30 mA. The LED driver has a switching frequency of 550 kHz, short circuit/thermal protection and is RoHS compliant. It is also optimized for dimming LEDs for automotive and industrial applications.