RT8458D Overview
The RT8458D is a PWM controller with an internal high side gate driver. Because of the Buck topology, the input voltage for the Buck system is only limited by the voltage rating of the external MOSFET. It is used for step down converters by well controlling the external MOSFET and regulating a constant output current.
RT8458D Key Features
- Low Cost and Efficient Buck Converter Solution
- Input Voltage Depends On External MOSFET
- Programmable Constant LED Current
- Dimmable LED Current by ACTL
- 100% Maximum Duty Cycle
- 160kHz Fixed Switching Frequency
- Output LED String Open Protection
- Output LED String Short Protection
- Output LED String Over Current Protection
- Built-in Thermal Protection