The LM393 comparator monitors the LED string's low-side voltage and enables either the buck regulator (CAT4201) or the linear regulator (CAT4101)
| Authors | Fabien Franc |
| Main Document | Article «Linear and switcher LED supplies combine, overcome disadvantages of each topology» |
| Description | Figure 1 |
| File Format / Size | PDF / 24 Kb |
| Document Language | English |
Other Materials from the Main Document
- Article «Linear and switcher LED supplies combine, overcome disadvantages of each topology»
- Figure 1. The LM393 comparator monitors the LED string's low-side voltage and enables either the buck regulator (CAT4201) or the linear regulator (CAT4101)
- Figure 2. The linear/buck current sink extends the compliance range for current regulation down to a lower supply voltage (below 8 V), compared with the buck regulator alone, and reduces EMI with low battery. As a result, the LEDs can remain on under low-battery co
