SG6859 Fairchild Semiconductor, SG6859 Datasheet
SG6859
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SG6859 Summary of contents
Page 1
... SG6859’s output driver is clamped at 17V. SG6859 controllers can be used to improve the performance and reduce the production cost of power supplies. The SG6859 is the best choice for replacing linear and RCC-mode power adapters available in 8-pin DIP and 6-pin SOT-26 packages. ...
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... A resistor connected from the RI pin to ground will generate a constant current source for the SG6859. This current is used to charge an internal capacitor, to determine the switching frequency. Increasing the resistance will reduce the amplitude of the current source and reduce the switching frequency. A 95kΩ ...
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... Low Cost Green-Mode PWM Controller for Flyback Converters www.DataSheet4U.com BLOCK DIAGRAM © System General Corp. Version 1.2.1(IAO33.0067.B2) Product Specification www.sg.com. • www.fairchildsemi.com September 28, 2007 SG6859 ...
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... Value ≦22 -20 to +85 = 15V 25° Test Condition Min. 15.5 10 – 0.1V DD DD-ON V =15V, DD GATE with 1nF to GND (Auto Restart) 24 www.sg.com. Product Specification SG6859 Unit °C °C/W 208.4 °C/W 82.5 °C ° Unit V °C Typ. Max. Unit 22 V 16.5 17.5 V 11.5 12 ...
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... =-20 to 85°C A Test Condition V =15V, I =20mA =13.5V, I =20mA =15V, C =1nF =15V, C =1nF =22V DD www.sg.com. Product Specification SG6859 Min. Typ. Max. Unit 5 KΩ 4.3 4.6 4 2.6 2.85 3 100 Hz/mV Min. Typ. Max. Unit 10 KΩ 40 ...
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... Temperature OSC 75.0 74.8 74.6 74.4 74.2 74.0 -40 - 110 125 - 6 - Product Specification SG6859 ) vs Temperature DD-OFF - 110 Temperature (℃) Operating Supply Current ( Temperature DD-OP - 110 Temperature (℃) Maximum Duty Cycle (DCY ) vs Temperature ...
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... Temperature LEB 3.5 3.0 2.5 2.0 1.5 1 110 125 Product Specification SG6859 ) vs Temperature FB-G - 110 Temperature (℃ atin rent v s VDD v o ltag VDD (V) www.sg.com.tw • ...
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... The turn-on and turn-off thresholds of the SG6859 are fixed internally at 16.5V/11.5V. During start-up, the hold-up capacitor must be charged to 16.5V through the start-up resistor, so that the SG6859 will be enabled. The hold-up capacitor will continue to supply V can be delivered from the auxiliary winding of the main transformer start-up process ...
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... Low Cost Green-Mode PWM Controller for Flyback Converters www.DataSheet4U.com Gate Output The SG6859 BiCMOS output stage is a fast totem pole gate driver. Cross conduction has been avoided to minimize heat dissipation, increase efficiency, and enhance reliability. The output driver is clamped by an internal 17V Zener diode in order to protect power MOSFET transistors against undesired over-voltage gate signals ...
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... R 750KΩ 1206 R 47KΩ 1206 R 47Ω 1206 R 4.7Ω 1206 R 100Ω 0805 R 10Ω 1206 R 100KΩ 0805 R 100Ω 1/8W R 33KΩ 0805 R 33KΩ 1/8W R 4.7KΩ 0805 R 0Ω 0805 EE-16 IC SG6859 PC817 TL431 www.sg.com.tw • www.fairchildsemi.com September 28, 2007 ...
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... Product Specification SG6859 Θ Typ. Max. 0.210 0.130 0.135 0.060 0.018 0.365 0.400 0.300 0.250 0.255 0.100 0.130 0.150 0.355 0.375 7˚ ...
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... Product Specification SG6859 Detail A c θ Typ. Max. 0.057 0.006 0.045 0.051 0.020 0.009 0.114 0.110 0.063 0.037 0.075 0.018 0.024 0.024 0.010 0.010 4° 8° 10° 15° www.sg.com.tw • ...
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... Low Cost Green-Mode PWM Controller for Flyback Converters www.DataSheet4U.com © System General Corp. Version 1.2.1(IAO33.0067.B2) Product Specification www.sg.com. • www.fairchildsemi.com September 28, 2007 SG6859 ...