NCP1253ASN65T1G Converter Offline Flyback Topology 65kHz 6-TSOP
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NCP1253ASN65T1G Offline Flyback Converter – 65kHz PWM Controller
The NCP1253ASN65T1G from onsemi is a high-efficiency offline flyback converter IC designed for reliable and compact AC-DC power supply applications. Built for stable operation, this controller delivers precise power regulation with integrated protection features.
Operating at a fixed 65 kHz switching frequency, the NCP1253 ensures consistent performance while maintaining efficiency across a wide input range. Its isolated output support makes it suitable for a variety of power conversion designs.
With built-in overvoltage and short-circuit protection, this IC enhances system safety and durability in demanding environments such as adapters, power modules, and industrial electronics.
Key Features
- Offline flyback converter controller for AC-DC power supplies
- Fixed switching frequency: 65 kHz
- Wide supply voltage range: 8.8V – 28V
- Startup voltage: 18V
- High duty cycle capability (up to 80%)
- Supports isolated output designs
- Integrated overvoltage and short-circuit protection
- Compact TSOP-6 / SOT-23-6 package
- Surface-mount design for space-saving applications
Technical Specifications
| Part Number | NCP1253ASN65T1G |
| Manufacturer | onsemi |
| Category | PMIC – AC/DC Offline Converter |
| Topology | Flyback |
| Switching Frequency | 65 kHz |
| Duty Cycle (Max) | 80% |
| Startup Voltage | 18V |
| Supply Voltage | 8.8V – 28V |
| Output Isolation | Isolated |
| Protection Features | Overvoltage, Short Circuit |
| Operating Temperature | -40°C to +125°C (TJ) |
| Package | TSOP-6 / SOT-23-6 |
| Mounting Type | Surface Mount |
| Condition | Brand New |
Applications
Ideal for AC-DC adapters, offline power supplies, industrial power modules, and compact flyback converter designs requiring stable and protected operation.
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