The FAN2013B is a high-efficiency, low-noise, synchronous Pulse Width Modulated (PWM) current-mode DC-DC converter designed for low-voltage applications. It provides up to 2A continuous-load current from the 4.5V to 5.5V input. The output voltage is adjustable over a wide range by means of an external voltage divider. The FAN2013B is enabled when the input voltage on the VIN pin exceeds the UVLO threshold. A current-mode control loop with a fast transient response ensures excellent line and load regulation. The fixed 1.2MHz switching frequency enables designers to choose a small, inexpensive external inductor and capacitor. Filtering can be accomplished with small components, reducing space and cost. Protection features include input under-voltage lockout, short-circuit protection, and thermal shutdown. Soft-start limits inrush current during startup conditions. The device is available in a 3x3mm 6-lead MLP.