Unisonic Technologies UL83B
UL83B are a highly integrated power switch with constant current (CC) control for LED lighting applications. The IC senses the inductor current during the whole switching cycle, which can achieve high precision CC control with excellent line and load regulation.| Part No. | UL83B |
|---|---|
| Datasheet | UL83B Download |
| Manufacturer |  Unisonic Technologies |
| Description | NON ISOLATED BUCK CONSTANT CURRENT HIGH PF LED DRIVER |
| Buy | Stock & Price |
DESCRIPTION
which is suitable for the non isolated buck LED constant current power supply with 85Vac~265Vac full range input voltage, active PFC control for high PF, low THD, and high efficiency. UL83B integrates 550V power MOSFET with high voltage startup and IC power supply circuit, which requires very few external components. UL83B chip with high precision current sampling circuit, while the use of patented constant current control technology to achieve high accuracy of the LED constant current output and excellent line voltage regulator. The chip operates in the critical mode of inductor current and the output current is not changed with the increase of the inductance and the working voltage of LED. UL83B has a variety of protection features, including LED short circuit protection, under voltage protection, over temperature adjustment function and so on. SOP-8●
FEATURES
* Active PFC for High PF and Low THD * PF>0.9 with Universal Input *The integrated 550V power mos. * The integra...
