FAN400A_2 FAIRCHILD [Fairchild Semiconductor], FAN400A_2 Datasheet
FAN400A_2
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FAN400A_2 Summary of contents
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FAN400A — Low-Power Green-Mode PWM Flyback Power Controller without Secondary Feedback Features Linearly Decreasing PWM Frequency Green Mode Under Light-Load and Zero-Load Conditions Constant Voltage (CV) and Constant Current (CC) No Secondary Feedback Low Startup Current: 8μA Low Operating Current: ...
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Application Diagram Internal Block Diagram © 2008 Fairchild Semiconductor Corporation FAN400A Rev. 1.0 ATE Figure 1. ...
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Marking Information Pin Configuration SSOT-6 GND FB NC Pin Definitions DIP SSOT Name Pin # Pin # 1 6 GATE 2 5 VDD SENSE GND © ...
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Absolute Maximum Ratings Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be operable above the recommended operating conditions and stressing the parts to these levels is not recommended. In addition, extended exposure ...
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Electrical Characteristics Unless otherwise noted, V =15V and T DD Symbol Parameter V Section DD V Continuously Operation Voltage DD-OP V Turn-on Threshold Voltage DD-ON V Turn-off Threshold Voltage DD-OFF I Startup Current DD-ST I Operating Supply Current DD-OP V ...
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Electrical Characteristics Unless otherwise noted, V =15V and T DD Symbol Parameter Oscillator Section f Frequency OSC t Hopping Period HOP f Green Mode Frequency OSC-G V Green Mode Entry FB Voltage FB-N V Green Mode Ending FB Voltage FB-G ...
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Typical Performance Characteristics 17 16.8 16.6 16.4 16.2 16 -40 -25 - emperature (℃ ) Figure 6. Turn-on Threshold Voltage (V vs. Temperature -40 -25 - ...
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Typical Performance Characteristics 3 2.8 2.6 2.4 2.2 2 -40 -25 - emperature (℃ ) Figure 12. Green-Mode Entry FB Voltage (V ) vs. Temperature FB-N 300 280 260 240 220 200 -40 -25 -10 5 ...
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Operation Description FAN400A devices integrate many useful functions for low-power switch-mode power supplies. The following descriptions highlight the key features of the FAN400A. Startup Current The required startup current is only 8μA. This allows a high-resistance, low-wattage startup resistor to ...
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Operation Description Slope Compensation The sensed voltage across the current sense resistor is used for current mode control and pulse-by-pulse current limiting. The built-in slope compensation improves power supply stability. prevents sub-harmonic oscillations that normally would occur because of peak ...
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Applications Information Figure 16. BOM Reference Component BD1 BD DI106 1A/600V CX1 (Option) YC 4.7nF/400V (Y1) CY1 (Option) YC 2.2nF/250V (Y1 4.7μF/400V 105° 4.7μF/400V 105° 1nF/1kV C4 EC 10μF/50V C7 (Option) CC 1nF/100V 1206 ...
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Applications Information Figure 17. BOM Reference Component BD1 BD DI106 1A/600V CY1 (Option) YC 2.2nF/250V (Y1 4.7μF/400V 105° 4.7μF/400V 105° 1nF/1kV C4 EC 10μF/50V C6 CC 4.7nF/0805 C7 (Option) CC 1nF/100V 1206 C8 EC ...
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Physical Dimensions 5.08 MAX 0.33 MIN (0.56) 2.54 NOTES: UNLESS OTHERWISE SPECIFIED A) THIS PACKAGE CONFORMS TO JEDEC MS-001 VARIATION BA B) ALL DIMENSIONS ARE IN MILLIMETERS. C) DIMENSIONS ARE EXCLUSIVE OF BURRS, MOLD FLASH, AND TIE BAR EXTRUSIONS. D) ...
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Physical Dimensions (Continued) Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner without notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify ...
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Fairchild Semiconductor Corporation FAN400A Rev. 1.0.2 15 www.fairchildsemi.com ...