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LA5754 - Separately-Excited Step-Down Switching Regulator

General Description

1.Start delay function The SS pin has the internally-connected 22µA (typ) constant-current supply.

When the voltage of SS pin exceeds the threshold voltage, the regulator starts operation.

As the threshold is 0.62V(typ), the start delay time can be calculated as follows: ex.

Key Features

  • High efficiency.
  • Four external parts.
  • Time-base generator (125kHz) incorporated.
  • Current limiter incorporated.
  • Thermal shutdown circuit incorporated.
  • Soft start circuit incorporated Specifications Absolute Maximum Ratings at Ta = 25°C Parameter Input voltage Output current SW pin.

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Full PDF Text Transcription for LA5754 (Reference)

Note: Below is a high-fidelity text extraction (approx. 800 characters) for LA5754. For precise diagrams, and layout, please refer to the original PDF.

Ordering number : ENA0951 Monolithic Linear IC LA5754 Overview www.DataSheet4U.com Separately-excited Step-down Switching Regulator (Variable Type) The LA5754 is a separa...

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d Step-down Switching Regulator (Variable Type) The LA5754 is a separately-excited step-down switching regulator (variable type). Features • High efficiency • Four external parts • Time-base generator (125kHz) incorporated • Current limiter incorporated • Thermal shutdown circuit incorporated • Soft start circuit incorporated Specifications Absolute Maximum Ratings at Ta = 25°C Parameter Input voltage Output current SW pin application reverse voltage Allowable power dissipation Symbol VIN max IO max Vsw Pd max1 Pd max2 Junction temperature Operating temperature Storage temperature Tj max Topr Tstg Infinite heat sink. No he

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