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LT1432-3.3 - 3.3V High Efficiency Step-Down Switching Regulator Controller

Key Features

  • s s s s s s s s.

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LT1432-3.3 3.3V High Efficiency Step-Down Switching Regulator Controller FEATURES s s s s s s s s DESCRIPTIO Accurate Preset 3.3V Output Up to 87% Efficiency Optional Burst ModeTM Operation for Light Loads Can Be Used with Many LTC Switching ICs Accurate Ultra-Low-Loss Current Limit Operates with Inputs from 4.5V to 30V Shutdown Mode Draws Only 15µA Uses Small 30µH Inductor The LT ®1432-3.3 is a control chip designed to operate with the LT1171/LT1271 family of switching regulators to make a very high efficiency 3.3V step-down (buck) switching regulator. A minimum of external components is needed. Included is an accurate current limit which uses only 60mV sense voltage and uses “free” PC board trace material for the sense resistor.