LTC7812 Datasheet PDF | Linear Technology

Linear Technology LTC7812

The LTC7812 operates from a wide 4.5V to 38V input supply range. When biased from the output of the boost regulator, the LTC7812 can operate from an input supply as low as 2.5V after start-up. The 33μA no-load quiescent current extends operating run time in battery-powered systems.

Part No.	LTC7812
Datasheet	LTC7812 Download
Manufacturer	Linear Technology
Description	38V Synchronous Boost+Buck Controller
Buy	Stock & Price

FEATURES

n Synchronous Boost and Buck Controllers n When Cascaded, Allows VIN Above, Below or Equal to Regulated VOUT n Output Remains in Regulation Through Input Dips (e.g., Cold Crank) Down to 2.5V n Wide Bias Input Voltage Range: 4.5V to 38V n Low Input and Output Ripple n Low EMI n Fast Output Transient Response n High Light Load Efficiency n Low Operating IQ: 33µA (Both Channels On) n Low Operating IQ: 28µA (Buck Channel On) n RSENSE or Lossless DCR Current Sensing n Buck Output Voltage Range: 0.8V ≤ VOUT ≤ 24V n Boost Output Voltage Up to 60V n Phase-Lockable Frequency (75kHz to 850kHz) n Small 32-Pin 5mm × 5mm QFN Package

APPLICATIONS

n Automotive and Industrial Power Systems n High Power Battery Operated Systems

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.