onsemi NCP1054ST100T3

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NCP1054ST100T3 - High-Voltage Flyback Switching Regulator

The NCP1054ST100T3 from onsemi is a high-performance, isolated flyback switching regulator designed for offline AC-DC power conversion applications up to 40W. Featuring a 700V breakdown voltage and integrated switching element, this controller delivers reliable, efficient power management for industrial, telecom, and consumer electronics.

Key Features & Benefits

  • 700V High-Voltage Breakdown - Robust protection for demanding applications
  • Integrated Flyback Topology - Simplified design with internal switching element
  • 100kHz Switching Frequency - Optimized for efficiency and compact transformer design
  • Comprehensive Fault Protection - Current limiting, overload, open loop, and over-temperature safeguards
  • Wide Operating Temperature Range - -40°C to 150°C (TJ) for harsh environments
  • Surface Mount SOT-223 Package - Space-saving design for high-density boards

Applications

Ideal for offline AC-DC converters, auxiliary power supplies, battery chargers, LED drivers, and industrial control systems requiring isolated, regulated power up to 40W.

Compliance & Quality: RoHS/REACH compliant with full traceability. Authorized distribution with manufacturer documentation and long lifecycle commitment for design-in confidence.

Product attributes Property Value
Manufacturer onsemi
Product Series
Packaging Tape & Reel (TR) |
Output Isolation Isolated
Internal Switch(s) Yes
Voltage - Breakdown 700V
Topology Flyback
Voltage - Start Up 8.5 V
Voltage - Supply (Vcc/Vdd) 7.5V ~ 10V
Duty Cycle 77%
Frequency - Switching 100kHz
Power (Watts) 40 W
Fault Protection Current Limiting, Open Loop, Over Load, Over Temperature
Control Features -
Operating Temperature -40°C ~ 150°C (TJ)
Grade -
Qualification -
Mounting Type Surface Mount
Package / Case TO-261-4, TO-261AA
Supplier Device Package SOT-223 (TO-261)