FSQ500L Fairchild Semiconductor, FSQ500L Datasheet
FSQ500L
Specifications of FSQ500L
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FSQ500L Summary of contents
Page 1
... Thermal Shutdown (TSD) protection with hysteresis, precision-current sources for loop compensation. When compared to a linear power supply, the FSQ500L device reduces total size and weight, while increasing efficiency, productivity, and system reliability. This device provides a basic platform for cost-effective flyback converters ...
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... Application Circuit Diagram AC IN Internal Block Diagram © 2008 Fairchild Semiconductor Corporation FSQ500L • Rev. 1.0.1 D PWM V GND Figure 1. Typical Application Circuit Figure 2. Internal Block Diagram 2 DC OUT www.fairchildsemi.com ...
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... CC is alive until V irregularly to maintain V This pin is connected to a storage capacitor. A high-voltage regulator connected between pin 2 (D) and this pin provides the supply voltage to the FSQ500L at startup and when switching during normal operation. The FSQ500L eliminates the need for auxiliary bias winding and associated external components ...
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... LDMOS available drain voltage is -0.3V ~ 700V. 6. Repetitive rating: pulse width is limited by maximum junction temperature. Thermal Impedance Symbol θ Junction-to-Ambient Thermal Resistance JA Note: 7. Free-standing with no heat sink; minimum land pattern. © 2008 Fairchild Semiconductor Corporation FSQ500L • Rev. 1.0.1 Parameter Min. (5) 700 -0.3 (6) -40 -55 Parameter (7) 4 Max ...
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... I Startup Charging Current CH V Supply Shunt Regulator CCREG V Supply Shunt Regulator During CCREG_ (8) TSD TSD Note: 8. These parameters, although guaranteed, are not 100% tested in production. © 2008 Fairchild Semiconductor Corporation FSQ500L • Rev. 1.0.1 Test Conditions V = 6.5V 0V 6.5V 0V 25° 25mA ...
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... Figure 6. UVLO Threshold Voltage (V vs. Temperature Burst Mode Voltage (V 850 830 810 790 770 750 -40 -25 - Temperature (℃) Figure 8. Burst-Mode Voltage (V vs. Temperature © 2008 Fairchild Semiconductor Corporation FSQ500L • Rev. 1.0.1 = 25° Temperature OP 140 135 130 125 120 110 125 -40 ) OP_Burst ...
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... Figure 12. Peak Current Limit (I Supply Shunt Regulator (V 7.0 6.8 6.6 6.4 6.2 6.0 -40 -25 - Temperature (℃) Figure 14. Supply Shunt Regulator (V vs. Temperature © 2008 Fairchild Semiconductor Corporation FSQ500L • Rev. 1.0.1 (Continued) = 25° Temperature MAX 5.0 4.8 4.6 4.4 4.2 4.0 - 110 125 Figure 11 ...
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... V the start voltage of 6.0V, the FSQ500L resumes its normal operation. If the fault condition is still not removed, the senseFET and HV/REG remain off and ...
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... V is set to 6.5V again. While CC V increases from 5.7V to 6.5V, the soft-start function CC makes the senseFET turn on and off with no voltage and/or current stress. © 2008 Fairchild Semiconductor Corporation FSQ500L • Rev. 1.0.1 Power 6.5V 6.0V 5.7V Figure 19. Over-Temperature Protection (OTP) ) ...
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... Once it passes V (800mV), switching resumes. The feedback voltage then falls and the process repeats. Burst mode alternately enables and disables switching of the senseFET, reducing switching loss in standby mode. © 2008 Fairchild Semiconductor Corporation FSQ500L • Rev. 1.0.1 Vo set Vo decreases half FB(Burst) ...
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... Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions, specifically the warranty therein, which covers Fairchild products. Always visit Fairchild Semiconductor’s online packaging area for the most recent package drawings: http://www.fairchildsemi.com/packaging/. © 2008 Fairchild Semiconductor Corporation FSQ500L • Rev. 1.0.1 11 www.fairchildsemi.com ...
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... Fairchild Semiconductor Corporation FSQ500L • Rev. 1.0.1 12 www.fairchildsemi.com ...