FAN4800IN_G PFC Controller - Equivalent & Substitute Parts

Part Overview

The FAN4800IN_G is a Power Factor Correction (PFC) controller IC manufactured by onsemi, designed for continuous conduction (CCM) and discontinuous conduction (DCM) mode operation. This device operates at 66kHz to 84kHz switching frequency and is housed in a 16-DIP through-hole package. The FAN4800IN_G is classified as obsolete, making identification of suitable substitute components essential for ongoing system support and new design implementations.

Substiute Parts

FAN4800IN_G

onsemiIn Stock: 1172FAN4800IN_G Datasheet

Current PartRFQ

FAN4800AUN

onsemiIn Stock: 35236FAN4800AUN Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the FAN4800IN_G is determined by the following critical parameters:

• Package Compatibility: Both the main part and substitute must use 16-DIP (0.300", 7.62mm) through-hole packaging to ensure direct PCB compatibility without layout modifications.
• Manufacturer Continuity: onsemi manufactures both the original and substitute part, ensuring consistent design philosophy and pin configuration.
• Base Product Family: Both parts share the FAN4800 base product number, indicating they are part of the same PFC controller family with compatible pinouts.
• Supply Voltage Range: The substitute must operate within or encompass the original supply voltage specification (11V ~ 16.5V).
• Operating Temperature Range: The substitute must support the required temperature range for the application.
• Mounting Type: Through-hole mounting must be maintained for direct replacement capability.

The FAN4800AUN qualifies as a direct substitute based on these criteria, despite differences in operating mode, switching frequency, and startup current specifications.

Parameter Comparison

Engineering Selection Recommendations

The FAN4800AUN is the designated substitute for the obsolete FAN4800IN_G based on manufacturer continuity, identical package specifications, and compatible pinout within the FAN4800 product family.

Advantages of FAN4800AUN:

• Active product status ensures long-term availability and supply chain continuity
• Extended supply voltage range (11V ~ 22V) provides broader application flexibility
• Lower startup current (30 µA vs. 100 µA) reduces quiescent power consumption
• RoHS3 compliance supports modern regulatory requirements
• Higher inventory availability (35200 pcs vs. 1074 pcs) facilitates procurement

Design Considerations:

• The FAN4800AUN operates at higher switching frequency (240kHz ~ 268kHz) compared to the original (66kHz ~ 84kHz), requiring verification of magnetic component design and EMI characteristics in the target application
• Operating temperature maximum is reduced from 125°C to 105°C; verify application thermal requirements
• Operating mode differs (Average Current vs. CCM/DCM); circuit topology and control loop design must be validated for compatibility

Frequently Asked Questions (FAQ)

Q: Can the FAN4800AUN be used as a direct pin-for-pin replacement for the FAN4800IN_G?

A: Yes. Both devices use identical 16-DIP (0.300", 7.62mm) through-hole packaging with compatible pinouts within the FAN4800 family. No PCB layout modifications are required for physical installation.

Q: What are the key differences between these two parts?

A: The primary differences are operating mode (CCM/DCM vs. Average Current), switching frequency (66kHz~84kHz vs. 240kHz~268kHz), startup current (100µA vs. 30µA), and maximum operating temperature (125°C vs. 105°C). The FAN4800AUN has an extended supply voltage range (11V~22V vs. 11V~16.5V).

Q: Why is the FAN4800IN_G obsolete?

A: The FAN4800IN_G is classified as obsolete by onsemi. The FAN4800AUN represents the active product line continuation within the FAN4800 family.

Q: Will the higher switching frequency of the FAN4800AUN affect my circuit design?

A: Yes. The FAN4800AUN operates at 240kHz~268kHz versus the original 66kHz~84kHz. This requires verification of magnetic component saturation characteristics, core losses, and EMI performance. Circuit simulation and prototype testing are necessary to confirm compatibility with your specific power stage design.

Q: Is the FAN4800AUN RoHS compliant?

A: Yes. The FAN4800AUN is RoHS3 compliant. The FAN4800IN_G compliance status is not specified in available documentation.

Q: What is the maximum operating temperature for each part?

A: The FAN4800IN_G operates to 125°C maximum. The FAN4800AUN operates to 105°C maximum. Verify your application thermal requirements against these limits.

Q: Are both parts available in the same packaging options?

A: Both parts are available in 16-DIP through-hole packaging. The FAN4800AUN is supplied in tube packaging, while the FAN4800IN_G packaging format is not specified.