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SIFIRST TECHNOLOGIES NANHAI LTD
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SIFIRST TECHNOLOGIES NANHAI LTD

SIFIRST TECHNOLOGIES NANHAI LTD

Mainland China

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Pulse Width Modulation Controller
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Model No.:
SF5545B
Brand:
SiFirst
Colour:
Black
Minimum Order Quantity:
10 piece(s)
Description
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Description
Features:
  • Less than 100mW standby power.
  • Brownout Protection (BOP).
  • Proprietary "η-BalanceTM" to boost light load efficiency.
  • Proprietary "Audio Noise Free OCP compensation".
  • Proprietary “zero OCP/OPP recovery gap” control.
  • Fixed 65KHz switching frequency.
  • Frequency reduction and Burst Mode Control for energy saving.
  • Built-in soft start function.
  • Pins floating protection.
  • Current mode control.
  • Built-in frequency shuffling.
  • Built-in synchronous slope compensation.
  • Cycle-by-cycle current limiting.
  • Built-in leading edge blanking (LEB).
  • Constant power limiting.
  • Latch plug-off protection.
  • VDD OVP & clamp.
  • VDD under voltage lockout (UVLO).
Applications:
  • Offline AC/DC fly-back converter for.
  • AC/DC adapters.
  • Open-frame SMPS.
  • Set-top box power supplies.
  • ATX standby power.
  •  

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