Overview
The onsemi NCP1251BSN100T1G is a current-mode PWM controller designed for offline power supplies, specifically utilizing flyback topology. Introduced on October 4, 2010, this component is part of onsemi's power management portfolio, catering to the needs of AC to DC switching converters. It is packaged in a TSOP-6 (SC-74) surface mount package, making it suitable for a variety of applications requiring efficient power conversion.
Key Specifications
| Attribute | Value |
|---|---|
| Manufacturer | onsemi |
| Package Type | TSOP-6 (SC-74) |
| Mounting Method | Surface Mount |
| Supply Voltage | 8.8V to 28V |
| Supply Current-Max | 2.5mA |
| Frequency-Max | 100kHz (Typical) |
| Topology | Flyback |
| Duty Cycle-Max | 84% (or 80% Typical) |
| Operating Temperature Range | -40°C to +125°C |
| Storage Temperature Range | -60°C to +150°C |
| Output Current | -500mA to 300mA |
| Thermal Resistance | 360°C/W |
Key Features
- Current Mode Control: The NCP1251BSN100T1G operates in current mode, providing precise control over the output current.
- Flyback Topology: Designed for flyback converters, this controller is ideal for offline power supplies.
- High Frequency Operation: Supports a maximum switching frequency of 100kHz, ensuring efficient power conversion.
- Wide Operating Voltage Range: Can operate within a supply voltage range of 8.8V to 28V.
- High Duty Cycle: Maximum duty cycle of up to 84% (or 80% typical), allowing for flexible design options.
- Compact Packaging: TSOP-6 package ensures a small footprint, suitable for space-constrained applications.
- RoHS Compliance: Compliant with EU RoHS regulations, ensuring environmental sustainability.
Applications
- Offline Power Supplies: Ideal for use in offline power supplies due to its flyback topology and current mode control.
- Switch Mode Power Supplies (SMPS): Suitable for various SMPS applications requiring efficient and reliable power conversion.
- Consumer Electronics: Can be used in a wide range of consumer electronics that require compact and efficient power management solutions.
- Industrial Power Systems: Applicable in industrial settings where reliable and efficient power conversion is critical.
Q & A
- What is the primary function of the NCP1251BSN100T1G?
The NCP1251BSN100T1G is a current-mode PWM controller designed for offline power supplies, specifically utilizing flyback topology.
- What is the package type of the NCP1251BSN100T1G?
The component is packaged in a TSOP-6 (SC-74) surface mount package.
- What is the operating voltage range of the NCP1251BSN100T1G?
The operating voltage range is from 8.8V to 28V.
- What is the maximum switching frequency of the NCP1251BSN100T1G?
The maximum switching frequency is 100kHz (typical).
- What is the maximum duty cycle of the NCP1251BSN100T1G?
The maximum duty cycle is up to 84% (or 80% typical).
- What is the operating temperature range of the NCP1251BSN100T1G?
The operating temperature range is from -40°C to +125°C.
- Is the NCP1251BSN100T1G RoHS compliant?
Yes, the NCP1251BSN100T1G is RoHS compliant.
- What are the typical applications of the NCP1251BSN100T1G?
Typical applications include offline power supplies, switch mode power supplies (SMPS), consumer electronics, and industrial power systems.
- What is the storage temperature range of the NCP1251BSN100T1G?
The storage temperature range is from -60°C to +150°C.
- What is the thermal resistance of the NCP1251BSN100T1G?
The thermal resistance is 360°C/W.
