SGM3133 Description
The SGM3133 is a high efficiency and cost effective charge pump white LED driver. It supports up to 4 white LEDs and regulates a constant current for uniform intensity. The part maintains the high efficiency by utilizing a 1×/1.5× fractional charge pump and low dropout current sources.
SGM3133 Key Features
- Input Voltage Range: 2.7V to 5.5V
- Drives up to 4 LEDs at 20mA Each
- 16-Step Brightness Control
- Automatic Charge Pump Mode Selection
- Switching Frequency: 1MHz
- 1% Typical LED Current Matching
- Internal Soft-Start Limits Inrush Current
- Low Input Noise and Low EMI
- Over Current and Over Temperature Protection
- Output Over Voltage Protection
SGM3133 Applications
- Input Voltage Range: 2.7V to 5.5V
- Drives up to 4 LEDs at 20mA Each