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NCP1239KD65R2G is listed in the AC DC Converters, Offline Switchers range at ChipApex. The manufacturer field lists onsemi. Its product description is IC OFFLINE SWITCH FLYBACK 7SOIC. Review the specifications below when checking this part for your BOM.
AC DC Converters, Offline Switchers specifications for NCP1239KD65R2G
- Description：IC OFFLINE SWITCH FLYBACK 7SOIC
- Series：-
- Mfr：onsemi
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Isolation：Isolated
- Internal Switch(s)：No
- Voltage - Breakdown：-
- Topology：Flyback
- Voltage - Start Up：12 V
- Voltage - Supply (Vcc/Vdd)：8.8V ~ 35V
- Duty Cycle：80%
- Frequency - Switching：65kHz
- Fault Protection：Current Limiting, Over Load, Over Power, Over Temperature, Over Voltage, Short Circuit
- Control Features：EN, Soft Start
- Operating Temperature：150°C (TJ)
- Package / Case：8-SOIC (0.154", 3.90mm Width), 7 Leads
- Supplier Device Package：7-SOIC
- Mounting Type：Surface Mount
- Grade：-
- Qualification：-
- Power (Watts)：-
AC DC Converters, Offline Switchers datasheet and documents for NCP1239KD65R2G
AC DC Converters, Offline Switchers Overview
The NCP1239KD65R2G is a fixed-frequency current-mode controller designed for offline flyback converters. It features a high-voltage start-up current source for quick power-on sequences. The device operates at a switching frequency of 65 kHz with a maximum duty cycle of 80%. It supports an operating supply voltage range of 8.8 V to 35 V and delivers an output current of 500 mA. The component functions within a temperature range of -40°C to +125°C and is housed in a 7-SOIC package.
AC DC Converters, Offline Switchers Feature Summary
- Integrates a high-voltage start-up current source to enable lossless power-on sequencing without external resistors.
AC DC Converters, Offline Switchers Applications
- Offline flyback converter designs
- Universal AC-DC power supplies
AC DC Converters, Offline Switchers Procurement Notes
Verify the specific suffix KD65R2G against official onsemi documentation to confirm the exact electrical characteristics, as variations exist within the NCP1239 family. Ensure compatibility with the target flyback topology and input voltage requirements before integration into the design.
AC DC Converters, Offline Switchers Selection Notes
Select this component for applications requiring a fixed-frequency current-mode control strategy with integrated high-voltage start-up capabilities. It is suitable for designs needing a compact solution with minimal external components for the startup phase.
AC DC Converters, Offline Switchers Part Context
This part belongs to the NCP1239 series of fixed-frequency current-mode controllers from onsemi. These devices are engineered for cost-effective and high-performance offline power conversion, offering robust protection features and efficient operation in standard flyback architectures.
AC DC Converters, Offline Switchers Replacement Considerations
Consult official substitution guides for compatible parts within the NCP1239 or NCP1234 families. Verify pinout and electrical parameter alignment before replacing existing inventory.
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