The PT4121E23F with LED Drivers SOT-23-6 RoHS is a low-cost switching current regulator manufactured by CR-PowTech that is designed to drive high-power LEDs with up to 50 mA of continuous current. It offers a wide input voltage of 2.7V to 5.5V, with pulse-width modulation (PWM) dimming capability. This regulator also features a wide operating temperature range from -40°C to 85°C, low quiescent current, and low ripple. Its compact SOT-23-6 footprint package makes it ideal for use in space-limited products. The RoHS compliant design is suitable for use with lead-free devices.