NCP1052P44G ON Semiconductor Integrated Circuit (Dual-In-Line Packages) In Stock
NCP1052P44G is an ON Semiconductor monolithic offline PWM power switching regulator with a fixed 44 kHz gated oscillator in an 8-pin DIP package. It integrates a high-voltage startup current source for self-supplied flyback power supply designs without auxiliary startup resistors. Available in stock worldwide with competitive pricing and fast shipping.
- Manufacturer
- ON Semiconductor
- Package
- Dual-In-Line Packages
- Pin Count
- 7
- Lifecycle
- OBSOLETE
- Datasheet
- NCP1052P44G Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Fixed 44 kHz gated oscillator eliminates external timing components and simplifies offline flyback converter design
- Integrated high-voltage startup current source enables self-supplied operation without discrete startup resistor networks
- Voltage-mode PWM control with DIP-8 package supports cost-effective through-hole offline power supply designs
- Built-in overload and short-circuit protection ensures robust and safe operation across a range of output loading conditions
Applications
NCP1052P44G is designed for offline flyback switching power supplies in consumer electronics, industrial equipment, and appliance applications requiring compact low-cost AC-DC conversion. Its fixed 44 kHz switching frequency and integrated high-voltage startup circuit simplify transformer design and reduce external component count in chargers, adapters, and auxiliary power supplies. The DIP-8 through-hole package also makes it ideal for prototype development, service and repair applications, and lower-volume production runs where simplified manual assembly is preferred.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | 626A-01 |
| YTEOL | 0 |
| Analog IC - Other Type | SWITCHING REGULATOR |
| Control Mode | VOLTAGE-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 8.5V |
| Input Voltage-Min | 7.5V |
| Input Voltage-Nom | 8V |
| JESD-30 Code | R-PDIP-T8 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Output Current-Max | 2A |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | DIP8,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Surface Mount | NO |
| Switcher Configuration | SINGLE |
| Switching Frequency-Max | 50kHz |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | TIN |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Package | Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What switching frequency does NCP1052P44G use, and how does it affect transformer size in a flyback design?
NCP1052P44G operates at a fixed 44 kHz switching frequency, which allows a smaller flyback transformer than designs running at 20 kHz while avoiding the higher switching losses associated with 100 kHz operation. This frequency represents a practical balance between core size, efficiency, and cost for low-power offline AC-DC adapters and charger designs.
How does the integrated high-voltage startup circuit in NCP1052P44G simplify offline power supply design?
NCP1052P44G includes a built-in high-voltage current source that charges the Vcc capacitor directly from the rectified offline DC bus, eliminating the need for a discrete startup resistor network and cutting BOM component count. Once operating, the Vcc rail is maintained between 7.5 V and 8.5 V by an auxiliary winding, enabling sustained 44 kHz flyback converter operation without external startup circuitry.
What control mode and protection features does NCP1052P44G provide for robust offline power supply operation?
NCP1052P44G uses voltage-mode PWM control at a fixed 44 kHz frequency with built-in overload and short-circuit protection, providing a simple and robust control loop for offline flyback converters supplying loads up to a few watts. The gated oscillator architecture skips switching cycles under light-load conditions, reducing standby power draw to meet modern energy efficiency regulations.
For a low-power offline charger prototype, why choose NCP1052P44G in DIP-8 over an equivalent SMD controller?
The 8-pin DIP package of NCP1052P44G makes hand-soldering and component substitution straightforward during prototype development of offline converters in the 1 W to 5 W range, where through-hole assembly eliminates the need for SMT reflow equipment. Engineers needing the smallest possible PCB footprint may later migrate to an equivalent SMD variant, but DIP speeds up early design validation cycles significantly.
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About ON Semiconductor
ON Semiconductor (onsemi) provides intelligent power and sensing technologies for automotive, industrial, IoT, and cloud infrastructure applications.
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