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LM5175 Description

The LM5175 is a synchronous four-switch buck-boost DC/DC controller capable of regulating the output voltage at, above, or below the input voltage. The LM5175 operates over a wide input voltage range of 3.5 V to 42 V (60 V maximum) to support a variety of applications. The LM5175 employs current-mode control both in buck and boost modes of operation for superior load and line regulation.

LM5175 Key Features

  • 1 Single Inductor Buck-Boost Controller for StepUp/Step-Down DC/DC Conversion
  • Wide VIN Range: 3.5 V to 42 V, 60 V Maximum
  • Flexible VOUT Range: 0.8 V to 55 V
  • VOUT Short Protection
  • High Efficiency Buck-Boost Transition
  • Adjustable Switching Frequency
  • Optional Frequency Sync and Dithering
  • Integrated 2-A MOSFET Gate Drivers
  • Cycle-by-Cycle Current Limit and Optional Hiccup
  • Optional Input or Output Average Current Limiting