LM2794
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Краткое описание:
Current Regulated Switched Capacitor LED Supply with Analog and PWM Brightness Control
Дополнительная информация
The LM2794 is a fractional CMOS charge-pump that provides four regulated current sources for driving white LEDs. It operates from an input voltage range of 2.7V to 5.5V and maintains a constant current determined by an external sense resistor. It features a 3/2 boost function for high efficiency and supports up to 80mA of total output current. The device includes analog brightness control via the BRGT pin and PWM control via the SD pin, with a switching frequency of 325kHz to minimize RF interference.
| RoHS | Compliant |
| REACH | Affected |
| Shutdown Current | 2.3µA |
| Matching Accuracy | ±0.5% |
| Number of Outputs | 4Channels |
| Input Voltage (Max) | 5.5V |
| Input Voltage (Min) | 2.7V |
| Switching Frequency | 325kHz |
| Total Output Current | 80mA |
| Output Current per Channel | 20mA |
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