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Manufacturer Part #


NCP1012 Series 10 V 110 kHz Self-Supplied Monolithic Switcher - PDIP-7

ECAD Model:
Mfr. Name: ON Semiconductor
Standard Pkg:
Product Variant Information section
Date Code: 2103
Product Specification Section
Technical Attributes
Attributes Table
Topology: Flyback
Input Voltage: 8.5V to 10V
Output Current-Max: 250mA
Switching Frequency-Max: 110kHz
Package Style:  PDIP-7
Mounting Method: Through Hole
Features & Applications

The NCP101X series integrates a fixed−frequency current−mode controller and a 700 V MOSFET. Housed in a PDIP−7, PDIP−7 Gull Wing, or SOT−223 package, the NCP101X offers everything needed to build a rugged and low−cost power supply, including soft−start, frequency jittering, short−circuit protection, skip−cycle, a maximum peak current setpoint and a Dynamic Self−Supply (no need for an auxiliary winding).

Unlike other monolithic solutions, the NCP101X is quiet by nature: during nominal load operation, the part switches at one of the available frequencies (65 − 100 − 130 kHz). When the current setpoint falls below a given value, e.g. the output power demand diminishes, the IC automatically enters the so−called skip−cycle mode and provides excellent efficiency at light loads. Because this occurs at typically 1/4 of the maximum peak value, no acoustic noise takes place. As a result, standby power is reduced to the minimum without acoustic noise generation.

Key Features:

  • Built−in 700 V MOSFET with Typical RDSon of 11 Ω and 22 Ω
  • Large Creepage Distance Between High−Voltage Pins
  • Current−Mode Fixed Frequency Operation: 65 kHz – 100 kHz − 130 kHz
  • Skip−Cycle Operation at Low Peak Currents Only: No Acoustic Noise!
  • Dynamic Self−Supply, No Need for an Auxiliary Winding
  • Internal 1.0 ms Soft−Start
  • Latched Overvoltage Protection with Auxiliary Winding Operation
  • Frequency Jittering for Better EMI Signature
  • Auto−Recovery Internal Output Short−Circuit Protection
  • Below 100 mW Standby Power if Auxiliary Winding is Used
  • Internal Temperature Shutdown
  • Direct Optocoupler Connection
  • SPICE Models Available for TRANsient Analysis
  • These are Pb−Free and Halide−Free Devices


  • Low Power AC/DC Adapters for Chargers
  • Auxiliary Power Supplies (USB, Appliances,TVs, etc.)
Pricing Section
Global Stock:
On Order:
Factory Stock:Factory Stock:
Factory Lead Time:
2 Weeks
Minimum Order:
Multiple Of:
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Web Price
Product Variant Information section