IRS2541 Description
The IRS254(0,1) are high voltage, high frequency buck control ICs for constant LED current regulation. They incorporate a continuous mode time-delayed hysteretic buck regulator to directly control the average load current, using an accurate on-chip bandgap voltage reference. The application is inherently protected against short circuit conditions, with the ability to easily add opencircuit protection.
IRS2541 Key Features
- 200 V (IRS2540) and 600 V (IRS2541) half bridge driver
- Micropower startup (<500 µA)
- ±2% voltage reference
- 140 ns deadtime
- 15.6 V zener clamp on VCC
- Frequency up to 500 kHz
- Auto restart, non-latched shutdown
- PWM dimmable
- Small 8-Lead DIP/8-Lead SOIC packages