Overview
The FAN4800AUN is a pulse width modulation (PWM) controller designed for offline power conversion applications, optimized for high-performance and low-voltage operations. It is part of the FAN4800AU series from onsemi and is particularly suited for power supplies that incorporate boost Power Factor Correction (PFC) and PWM. This controller provides excellent performance for stable and efficient power regulation, making it a reliable choice for various power management needs.
Key Specifications
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| Manufacturer | onsemi | Product Category | Power Factor Correction - PFC |
| RoHS | Details | Minimum Operating Temperature | -40°C |
| Maximum Operating Temperature | +105°C | Mounting Style | Through Hole |
| Package / Case | DIP-16 | Brand | onsemi / Fairchild |
| Product Type | PFC - Power Factor Correction | Series | FAN4800AU |
| Factory Pack Quantity | 1500 | Subcategory | PMIC - Power Management ICs |
| Type | Current Mode PWM Controllers | Unit Weight | 0.057420 oz |
| Package | Tube | Product Status | Active |
| Mode | Average Current | Frequency - Switching | 240kHz ~ 268kHz |
| Current - Startup | 30 µA | Voltage - Supply | 11V ~ 22V |
| Operating Temperature | -40°C ~ 105°C | Mounting Type | Through Hole |
| Supplier Device Package | 16-PDIP | Base Product Number | FAN4800 |
Key Features
- Pin-to-Pin Compatible with ML4800, FAN4800, CM6800, and CM6800A: Ensures compatibility with other PWM controllers from the same manufacturer.
- PWM Configurable for Current-Mode or Feed-Forward Voltage-Mode Operation: Allows users to configure the controller for different operating modes based on application requirements.
- Internally Synchronized Leading-Edge PFC and Trailing-Edge PWM in One IC: Integrates both PFC and PWM functions, reducing the need for external components and improving system efficiency.
- Low Operating Current: Helps reduce power consumption and heat generation during normal operation.
- Innovative Switching-Charge Multiplier Divider: Enables high-frequency PWM operation while minimizing the need for external components.
- Average-Current-Mode for Input-Current Shaping: Allows users to shape the input current waveform to optimize system performance and efficiency.
- PFC Over-Voltage and Under-Voltage Protections: Includes built-in protections for safe and reliable operation in a wide range of input voltage conditions.
- PFC Feedback Open-Loop Protection: Prevents damage to the controller or other system components due to unexpected changes in the input voltage or current).
- Cycle-by-Cycle Current Limiting for PFC/PWM: Ensures safe and reliable operation even under extreme load conditions).
- Power-On Reset (POR) and Watchdog Timer (WDT): Ensures safe and reliable system startup and operation).
Applications
- Desktop PC: Suitable for power supplies in desktop computers.
- LCD TV and LCD Monitor: Ideal for power management in display devices).
- Distribution: Can be used in various distribution systems requiring efficient power conversion).
- Advanced Control Functions: Useful in applications requiring advanced control functions and low standby power consumption).
- LED Lighting: Helps in achieving efficient and reliable power conversion in LED lighting setups).
Q & A
- What is the primary function of the FAN4800AUN?
The FAN4800AUN is a PWM controller designed for offline power conversion applications, integrating both PFC and PWM functions.
- What are the operating temperature ranges for the FAN4800AUN?
The operating temperature range is from -40°C to +105°C.
- What is the typical switching frequency of the FAN4800AUN?
The typical switching frequency is between 240kHz and 268kHz.
- Does the FAN4800AUN support both current-mode and voltage-mode operation?
Yes, it supports both current-mode and feed-forward voltage-mode operation).
- What kind of protections does the FAN4800AUN offer?
The FAN4800AUN includes PFC over-voltage and under-voltage protections, PFC feedback open-loop protection, and cycle-by-cycle current limiting for PFC/PWM).
- Is the FAN4800AUN compatible with other PWM controllers?
Yes, it is pin-to-pin compatible with ML4800, FAN4800, CM6800, and CM6800A).
- What is the package type of the FAN4800AUN?
The FAN4800AUN is available in a 16-pin DIP package.
- What are some common applications of the FAN4800AUN?
Common applications include desktop PCs, LCD TVs, LCD monitors, and distribution systems).
- Does the FAN4800AUN have built-in power-on reset and watchdog timer?
Yes, it features a power-on reset (POR) and watchdog timer (WDT) for safe and reliable system startup and operation).
- How does the FAN4800AUN help in reducing electromagnetic interference?
The FAN4800AUN operates in critical conduction mode, which helps in reducing electromagnetic interference and improving efficiency).
