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LTC3865-1 LTC3865-1

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  Dual Output Step-Down Regulator Features Pin Selectable Outputs, DCR Sensing, Reverse Current Protection and a 5mm × 5mm QFN &mdash LT Journal
  PDF, 426 Kb, Archivo publicado: abr 1, 2010
  Extracto del documento

  design features Dual Output Step-Down Regulator Features Pin Selectable
  Outputs, DCR Sensing, Reverse Current Protection and a
  5mm Г— 5mm QFN
  Stephanie Dai The LTC3865 is a high performance step-down controller with two constant frequency,
  current mode, synchronous buck controllers and on-chip drivers. It offers high output
  current capability over a wide input range. An important feature offered by the LTC3865 is its
  highly accurate programmable output voltage. Internal precision feedback resistors make it
  possible to select from nine different output voltages via two VID pins. The internal resistors
  reduce the number of external components and assure 1% accuracy for low voltage rails.
  The LTC3865 is suitable for applications
  with input voltages up to 38V and output
  voltages up to 5V. It can be synchronized
  to a frequency of up to 750kHz and comes
  in a compact 5mm Г— 5mm QFN package. The part is also capable of inductor DCR sensing, allowing for increased
  efficiencies at higher load currents. These
  features are ideal for wide input voltage
  range, high current applications where
  design solution footprint size is restricted. them floating can result in nine different output voltages from 0.6V to 5V (see
  Table 1). Pin programming eliminates
  at least four external feedback resistors, making the overall design solution
  space conservative and cost effective. If
  an application requires an output voltage not supported by pin programming,
  one still has the option to use external …

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Clasificación del fabricante

• Power Management > Switching Regulator > Step-Down (Buck) Regulators > Multiple Output Buck | External Power Switch Buck Controllers

Otros nombres:

LTC3865IFEPBF, LTC3865IFE PBF