FAN7680N Fairchild Semiconductor, FAN7680N Datasheet
FAN7680N
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FAN7680N Summary of contents
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... SMPS externally. When a high signal is applied to the PSON input, the FPO signal becomes a high state and all secondary outputs are grounded. The remote on/off signal is transferred with some on/off debounce time. ©2003 Fairchild Semiconductor Corporation www.fairchildsemi.com Description The FAN7680 is a complete output supervisory circuitry intended for use in the secondary side of a switched mode power supply ...
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FAN7680 Internal Block Diagram Vcc Start- VS5 6 VS33 5 UVP L H PGI 1 PGI_O Vref Typical Applicatin Circuit 3.6V REF. Vref Oscillator POR CLK Reset UVP ...
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Pin Assignments Pin Definitions Pin Number Pin Name 1 PGI 2 GND 3 FPO 4 PSON 5 VS33 6 VS5 PGO PGI PGO 1 8 GND FPO VS5 3 6 PSON VS33 ...
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FAN7680 Absolute Maximum Ratings Parameter Supply Voltage Supply Current Input Voltage Output Voltage Operating Temperature Storage Temperature Power Dissipation Recommended Operating Conditions Characteristic Supply Voltage Input Voltage Output Voltage Output Sink Current Supply Voltage Rising Time 4 (Note2,3) Symbol V ...
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Electrical Characteristics (V = 5V, Ta=25°C, unless otherwise specified) CC Over Voltage Protection, Under Voltage Protection and FPO Characteristic Over Voltage Threshold Under Voltage Threshold Leakage Current( ) FPO Low Level Output Voltage(FPO) PGI and PGO Characteristic Input Threshold Voltage(PGI) ...
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FAN7680 Typical Characteristics 0.0 0.5 1.0 1.5 2.0 PSON (V) Figure 1. PSON Threshold Voltage 2.83 2.79 2.75 2.71 2.67 VS33 (V) Figure 3. +3.3V UVP ...
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Typical Characteristics 9.80 9.60 9.40 9.20 Vcc (V) Figure 7. +12V UVP Voltage 9.00 8.80 13.30 13.50 FAN7680 13.70 13.90 14.10 14.30 Vcc (V) Figure 8. ...
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FAN7680 Timing Chart 1) AC Input ON/OFF - Normal State VCC POR PSON FPO t b1 PGI OUT PGO 2) PSON ON/OFF - Normal State PSON t FPO d3 PGI OUT PGO - Vcc : Supply Voltage - POR : ...
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Under Voltage at Normal State Latch PSON FPO PGI OUT PGO 4) Under Voltage at AC Input ON VCC POR PSON FPO PGI OUT PGO UVP Threshold AC Input Enable Latch ...
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FAN7680 5) Under Voltage at PSON ON/OFF PSON t FPO d3 PGI OUT PGO 6) Over Voltage at PSON ON/OFF Latch PSON FPO PGI OUT PGO 10 Latch PGI Threshold ...
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Application Information Power Good(PGO) and Power Good Delay A PC power supply is commonly designed to provide the motherboard with a power good signal, which is defined by the com- puter manufactures. If the +3.3V, +5V, and +12V outputs are ...
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FAN7680 during 75ms to avoid turn-on failure. At turn-off, there is an additional delay of 2.3ms from PSON to FPO. Power should be delivered to the rails only when the PSON signal is held at ground potential, thus the FPO ...
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Mechanical Dimensions Package Dimensions in millimeters 8-DIP FAN7680 13 ...
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FAN7680 Mechanical Dimensions Package 14 Dimensions in millimeters 8-SOP ...
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... Ordering Information Product Number FAN7680N FAN7680M Package Operating Temperature 8DIP -40°C ~ +125°C 8SOP FAN7680 15 ...
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... FAN7680 DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. ...