onsemi NCP1217AD133R2

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NCP1217AD133R2 Flyback PWM Controller IC

The NCP1217AD133R2 from onsemi is a high-performance flyback PWM controller designed for isolated AC-DC offline switching applications. This controller features a 133kHz switching frequency, 7.6V to 16V supply voltage range, and comprehensive fault protection including over-load, over-temperature, and short-circuit protection. Ideal for power supply designs in industrial, telecom, and consumer electronics applications.

Key Features:

  • Flyback topology with isolated output
  • 133kHz switching frequency for compact transformer design
  • Wide supply voltage range: 7.6V ~ 16V
  • 12.8V start-up voltage
  • 46.5% duty cycle
  • Comprehensive protection: Over Load, Over Temperature, Short Circuit
  • Surface mount 8-SOIC package
  • Operating temperature: 0°C ~ 150°C (TJ)
  • RoHS/REACH compliant
  • Tape & Reel packaging for automated assembly

Applications: AC-DC power supplies, battery chargers, LED drivers, auxiliary power supplies, industrial control systems

Complete Technical Specifications:

Product attributes Property Value
Manufacturer onsemi
Product Series
Packaging Tape & Reel (TR) |
Output Isolation Isolated
Internal Switch(s) No
Voltage - Breakdown -
Topology Flyback
Voltage - Start Up 12.8 V
Voltage - Supply (Vcc/Vdd) 7.6V ~ 16V
Duty Cycle 46.5%
Frequency - Switching 133kHz
Power (Watts) -
Fault Protection Over Load, Over Temperature, Short Circuit
Control Features -
Operating Temperature 0°C ~ 150°C (TJ)
Grade -
Qualification -
Mounting Type Surface Mount
Package / Case 8-SOIC (0.154", 3.90mm Width)
Supplier Device Package 8-SOIC