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FAN4800A

SpecificationsProductProduct statusEco StatusPricing*Package typeLeadsPacking methodPackage DrawingPackage Marking Convention**FAN4800AMYFull ProductionGreen$0.62SOIC16TAPE REEL Line 1: $Y (Fairchild logo)&Z (Asm. Plant Code)&2 (2-Digit Date Code)&K Line 2: FAN4800A Line 3: MYG...

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SeekIC No. : 004340363 Detail

FAN4800A: SpecificationsProductProduct statusEco StatusPricing*Package typeLeadsPacking methodPackage DrawingPackage Marking Convention**FAN4800AMYFull ProductionGreen$0.62SOIC16TAPE REEL Line 1: $Y (Fairch...

FAN4800A Data Sheet

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Part Number:
FAN4800A
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/12/21

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Product Details

Description



Specifications

      

ProductProduct statusEco StatusPricing*Package typeLeadsPacking methodPackage DrawingPackage Marking Convention**
FAN4800AMYFull ProductionGreen$0.62SOIC16TAPE REEL Line 1: $Y (Fairchild logo)
&Z (Asm. Plant Code)
&2 (2-Digit Date Code)
&K Line 2: FAN4800A Line 3: MYG
FAN4800ANYFull ProductionGreen$0.62DIP16RAIL Line 1: $Y (Fairchild logo)
&Z (Asm. Plant Code)
&4 (4-Digit Date Code)
&K Line 2: FAN4800A Line 3: NYG
* Fairchild 1,000 piece Budgetary Pricing
** A sample button will appear if the part is available through Fairchild's on-line samples program. If there is no sample button, please contact a Fairchild distributor to obtain samples

Package marking information for product FAN4800A is available. Click here for more information .



Description

The highly integrated FAN4800A/C and FAN4801/1S/2/2L are specially designed for power supplies that consist of boost PFC and PWM. They require very few external components to achieve versatile protections / compensation. They are available in 16-pin DIP and SOP packages.

The PWM can be used in either current or voltage mode. In voltage mode, feed-forward from the PFC output bus can reduce the secondary output ripple.

Compared with older productions, ML4800 and FAN4800, FAN4800A/C and FAN4801/1S/2/2L have lower operation current that save power consumption in external devices. FAN4800A/C and FAN4801/1S/2/2L have accurate 49.9% maximum duty of PWM that makes the hold-up time longer. Specifically, the brownout protection and PFC soft-start functions are not in ML4800 and FAN4800.

To start evaluating FAN4800A/C, FAN4801/1S/2/2L for replacing existing FAN4800 and ML4800 boards, five things must be done before the fine-tuning procedure:

1. Change RAC resister from the old value to a higher resister: between 6MW to 8MW.

2. Change RT/CT pin from the existing values to RT=6.8KWand CT=1000pF to have fPFC=64KHz, fPWM=64KHz.

3. VRMS pin needs to be 1.224V at VIN=85 VAC for universal input application from line input from 85VAC to 270 VAC. Both poles for the Vrms of FAN4801/1S/2/2L don?t need to substantially slower than FAN4800; about 5 to 10 times.

4. At full load, the average VEA needs to ~4.5V and the ripple on the VEA needs to be less than 400mV.

5. Soft-Start pin, the soft-start current has been reduced to half from the FAN4800 capacitor.




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