Overview
The FAN6921MLMY, produced by Fairchild Semiconductor (now part of ON Semiconductor), is a highly integrated power management IC that combines a Power Factor Correction (PFC) controller and a Quasi-Resonant PWM controller. This device is designed to enhance efficiency and reduce component count in power supply systems, particularly in applications requiring high power factor and low total harmonic distortion.
Key Specifications
| Parameter | Value |
|---|---|
| Package Type | SOIC-8, DIP-8 |
| Operating Temperature Range | -40°C to 125°C |
| Supply Voltage Range | 9V to 20V |
| PFC Control Method | Critical Mode |
| PWM Control Method | Quasi-Resonant Current Mode |
| Switching Frequency Range | Up to 100 kHz |
| Current Limiting | Peak Current Limiting |
| Protection Features | Overvoltage Protection, Overcurrent Protection, UnderVoltage Lockout (UVLO) |
Key Features
- Highly integrated PFC and Quasi-Resonant PWM controller in a single IC.
- Critical Mode PFC control for high efficiency and low harmonic distortion.
- Quasi-Resonant current mode PWM control for reduced switching losses.
- Peak current limiting and overvoltage protection for enhanced reliability.
- UnderVoltage Lockout (UVLO) for safe startup and operation.
- Compact SOIC-8 and DIP-8 packages for space-saving designs.
Applications
- Offline power supplies for consumer electronics, such as TVs and PCs.
- Industrial power supplies requiring high power factor and efficiency.
- LED lighting systems with high power factor requirements.
- Audio equipment and other high-power audio systems.
- Medical and telecommunications power supplies.
Q & A
- What is the primary function of the FAN6921MLMY?
The primary function is to provide integrated Power Factor Correction (PFC) and Quasi-Resonant PWM control for power supply systems. - What are the key benefits of using the FAN6921MLMY?
The key benefits include high efficiency, low total harmonic distortion, reduced component count, and enhanced reliability due to built-in protection features. - What are the typical applications for the FAN6921MLMY?
Typical applications include offline power supplies, industrial power supplies, LED lighting systems, audio equipment, and medical and telecommunications power supplies. - What is the operating temperature range of the FAN6921MLMY?
The operating temperature range is -40°C to 125°C. - What protection features are included in the FAN6921MLMY?
The device includes overvoltage protection, overcurrent protection, and UnderVoltage Lockout (UVLO). - What is the switching frequency range of the FAN6921MLMY?
The switching frequency range is up to 100 kHz. - What package types are available for the FAN6921MLMY?
The device is available in SOIC-8 and DIP-8 packages. - How does the FAN6921MLMY improve power supply efficiency?
It improves efficiency through critical mode PFC control and quasi-resonant current mode PWM control, reducing switching losses and harmonic distortion. - Is the FAN6921MLMY suitable for high-power applications?
Yes, it is suitable for high-power applications due to its peak current limiting and other protection features. - Where can I find detailed specifications for the FAN6921MLMY?
Detailed specifications can be found in the datasheet available on the ON Semiconductor website or through authorized distributors like Digi-Key, Mouser, etc.
