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LA5759 - Separately-excited Step-down Switching Regulator

Description

1.

Calculation equation to set the output voltage This IC controls the switching output so that the VOS pin voltage becomes 1.26V (typ).

The VOS pin has the inrush current of 1μA (typ).

Features

  • Output smoothing condenser can use a Low ESR condenser for the reliability improvement.
  • High efficiency.
  • Four external parts.
  • Time-base generator (80kHz) incorporated.
  • Current limiter incorporated.
  • Thermal shutdown circuit incorporated.
  • Soft start circuit incorporated Specifications Maximum Ratings at Ta = 25°C Parameter Input voltage SW pin.

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Datasheet Details

Part number LA5759
Manufacturer ON Semiconductor
File Size 64.52 KB
Description Separately-excited Step-down Switching Regulator
Datasheet download datasheet LA5759 Datasheet
Additional preview pages of the LA5759 datasheet.

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Full PDF Text Transcription

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Ordering number : ENA1683 LA5759 Monolithic Linear IC Separately-excited Step-down Switching Regulator (Variable Type) http://onsemi.com Overview The LA5759 is a separately-excited step-down switching regulator (variable type). Features • Output smoothing condenser can use a Low ESR condenser for the reliability improvement • High efficiency • Four external parts • Time-base generator (80kHz) incorporated • Current limiter incorporated • Thermal shutdown circuit incorporated • Soft start circuit incorporated Specifications Maximum Ratings at Ta = 25°C Parameter Input voltage SW pin application reverse Allowable power dissipation Operating temperature Storage temperature Symbol VIN max VSW Pd max1 Pd max2 Topr Tstg Conditions Infinite heat sink. No heat sink. Ratings 34 -1 7.5 1.
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