LTC7812
Description
The LTC®7812 is a high performance synchronous Boost+Buck DC/DC switching regulator controller that drives all N-channel power MOSFET stages. It contains independent step-up (boost) and step-down (buck) controllers that can regulate two separate outputs or be cascaded to regulate an output voltage from an input voltage that can be above, below or equal to the output voltage.
Key Features
- Synchronous Boost and Buck Controllers
- When Cascaded, Allows VIN Above, Below or Equal to Regulated VOUT
- Output Remains in Regulation Through Input Dips (e.g., Cold Crank) Down to 2.5V
- Wide Bias Input Voltage Range: 4.5V to 38V
- Low Input and Output Ripple
- Low EMI
- Fast Output Transient Response
- High Light Load Efficiency
- Low Operating IQ: 33µA (Both Channels On)
- Low Operating IQ: 28µA (Buck Channel On)
