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NCP1051ST44T3

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NCP1051ST44T3

IC OFFLINE SWITCH FLYBACK SOT223

Manufacturer: onsemi

Categories: AC DC Converters, Offline Switches

Quality Control: Learn More

The onsemi NCP1051ST44T3 is an offline switching controller designed for flyback topologies. This component integrates a high-voltage MOSFET and a controller within a SOT-223 (TO-261) package, enabling efficient power conversion up to 40W. It operates at a fixed switching frequency of 44kHz and features internal current limiting, open loop, overload, and over-temperature fault protection. The device requires a 7.5V to 10V supply voltage for operation and initiates with an 8.5V startup voltage. With a 700V breakdown voltage and isolated output capability, it is suitable for applications in consumer electronics, industrial power supplies, and lighting. The NCP1051ST44T3 is supplied in tape and reel packaging for surface mount applications.

Additional Information

Series: -RoHS Status: RoHS non-compliantManufacturer Lead Time: No lead time information availableProduct Status: ObsoletePackaging: Tape & Reel (TR)Datasheet:
Technical Details:
PackagingTape & Reel (TR)
Package / CaseTO-261-4, TO-261AA
Mounting TypeSurface Mount
Operating Temperature-40°C ~ 150°C (TJ)
Duty Cycle77%
Frequency - Switching44kHz
Internal Switch(s)Yes
Voltage - Breakdown700V
Output IsolationIsolated
TopologyFlyback
Voltage - Supply (Vcc/Vdd)7.5V ~ 10V
Supplier Device PackageSOT-223 (TO-261)
Fault ProtectionCurrent Limiting, Open Loop, Over Load, Over Temperature
Voltage - Start Up8.5 V
Control Features-
Power (Watts)40 W

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