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Solutions Search - LTC3619 - 400mA/800mA Synchronous Step-Down DC/DC with Average Input Current Limit

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

Sep 22nd 2009
The LTC3619 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 ...

Circuit 

 

3.3V to 5.5V input (500mA max) charging 4.4mF super cap (3.3V at 800mA) and providing 1.8V at 400mA

Sep 22nd 2009
The LTC3619 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 ...

Circuit 

 

USB-GSM application with 5V USB input (500mA max) charging a 4.4mF super cap (3.4V at 800mA) and providing 1.8V at 400mA

Sep 22nd 2009
The LTC3619 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 ...

Circuit