LM3501
Overview
The LM3501 is a fixed-frequency step-up DC/DC converter that is ideal for driving white LEDs for display backlighting and other lighting functions. With fully intergrated synchronous switching (no external schottky diode required) and a low feedback voltage (515 mV), power efficiency of the LM3501 circuit has been optimized for lighting applications in wireless phones and other portable products (single cell Li-Ion or 3-cell NiMH battery supplies).
- Synchronous rectification, high efficiency and no external schottky diode required
- Uses small surface mount components
- Can drive 2-5 white LEDs in series (may function with more low VF LEDs)
- 2.7V to 7V input range
