SG6849 is a low-power green-mode PWM feedback power controller from System General Corp. It can be used for battery chargers of cell phones, PDAs, digital cameras and power tools, as well as standby power supplies of TV/DVD and other auxiliary supplies.
The SG6849 is a highly integrated PWM controller designed for low-power flyback converters. It features a proprietary green-mode function that linearly decreases switching frequency under light-load and zero-load conditions to meet power conservation requirements. The device operates without secondary feedback, utilizing internal compensation to regulate output voltage.
| Startup Current | 5µA |
|---|---|
| Output Clamp Voltage | 16.7V |
| Over Temperature Protection Threshold | 150°C |
| Package Type | SOT-26 |
No, the SG6849 operates without secondary feedback.
The typical startup current is 5µA.
The controller shuts down at 150°C with a 20°C hysteresis.