3.3V to 5.5V input (475mA max or disable) charging a 4.4mF super cap (3.3V at 800mA) and providing 1.8V at 400mA without Burst Mode
Sep 10th 2009
The LTC3619B is a Dual 400mA/800mA monolithic synchronous buck regulator with an input supply voltage range is 2.5V to 5.5V, making it ideal for Li-Ion and USB powered applications