This circuit drives a high-current, white LED at 93% efficiency over input voltage and temperature. Potentiometer R1 controls current through LED1 and allows brightness adjustment. Diode D1 provides temperature compensatio
| Authors | Clayton Grantham |
| Main Document | Article «Switching regulator efficiently controls white-LED current» |
| Description | Figure 1 |
| File Format / Size | PDF / 19 Kb |
| Document Language | English |
Other Materials from the Main Document
- Article «Switching regulator efficiently controls white-LED current»
- Figure 1. This circuit drives a high-current, white LED at 93% efficiency over input voltage and temperature. Potentiometer R1 controls current through LED1 and allows brightness adjustment. Diode D1 provides temperature compensatio
- Figure 2. Circuit efficiency versus input voltage shows an increase in efficiency for increasing LED current and decreasing input voltage
- Figure 3. Current through the LED varies less than 3% over an operating- temperature range of 0 to 75 °C
