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NCP81148 - Synchronous Buck Controller

Description

Pin No.

channel MOSFET.

Top gate driver input supply, a bootstrap capacitor connection between SWNx and this pin.

Switch node between the top MOSFET and bottom MOSFET.

Features

  • Wide Input Voltage Range: from 5.5 V to 28 V.
  • Built.
  • in 5 V / 60 mA LDO.
  • Built.
  • in selectable 3.3 V or 12 V / 10 mA LDO.
  • Three Selectable Fixed Frequency 300 KHz, 400 KHz or 600 KHz.
  • 180 Interleaved Operation Between the Two Channels in Continue.
  • Conduction.
  • Mode (CCM).
  • Selected Power.
  • Saving Mode/Forced PWM Mode.
  • Transient.
  • Response.
  • Enhancement (TRE) Control.
  • Input Supply V.

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Datasheet Details

Part number NCP81148
Manufacturer onsemi
File Size 182.83 KB
Description Synchronous Buck Controller
Datasheet download datasheet NCP81148 Datasheet

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Full PDF Text Transcription

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NCP81148 Advance Information Synchronous Buck Controller with Auto Power Saving Mode and Built-In LDO NCP81148 is a dual synchronous buck controller that is optimized for converting the battery voltage or adaptor voltage into multiple power rails required in desktop and notebook system. NCP81148 consists of two buck switching controllers with fixed 5.0 V output on channel 2, 3.3 V on channel 1 and two on−board LDOs with three outputs: 5 V / 60 mA and 3.3 V or 12 V / 10 mA. NCP81148 supports high efficiency, fast transient response and provides power good signals. ON Semiconductor proprietary adaptive−ripple control enables seamless transition from CCM to DCM, where converter runs at reduced switching frequency with much higher efficiency at light load.
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