SG6848 ETC, SG6848 Datasheet
SG6848
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SG6848 Summary of contents
Page 1
... SG6848’s output driver is clamped at 15V. SG6848 controllers can be used to improve the performance and reduce the production cost of power supplies. The SG6848 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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... This pin also provides current amplitude information for current-mode control. A resistor connected from the RI pin to ground will generate a constant current source for the SG6848. 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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... ON/OFF Driver Q OSC S R OCP Comp Slope Compensation PWM Comp Green Mode Controller SOT-26 DIP-8 20 sec SOT-26 10 sec DIP Product Specification SG6848 (6) GATE Blanking 4 (4) SENSE Circuit Vlimit ramp 4.8V 7 (2) FB Value Unit -0 -0 ...
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... A Test Condition Test Condition V =15V, I =20mA =15V, I =20mA =15V, C =1nF =15V, C =1nF =20V Product Specification SG6848 Value Unit V ≦20 -30 to +85 ℃ Min. Typ. Max. Unit 1.3 2.0 mA 4.5 V Min. Typ. Max. Unit 10 kΩ 150 200 nsec 1.0 V 0.80 0.85 ...
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... Operating Supply Current DD OP © System General Corp. Version 1.2(IRO33.0010.B0) Test Condition Min. Typ. T =25°C 15.3 16 =25°C 10.9 11.7 A Test Condition Min. Typ. V =15V =15V Product Specification SG6848 Max. Unit 17.3 V 12.5 V Max. Unit www.sg.com.tw May.06, 2003 ...
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... TEMPERATURE ( ℃ ℃ ℃ ℃ ) Max. Duty Cycle (DC (MAX) Tem perature -40 -25 - TEMPERATURE ( ℃ ℃ ℃ ℃ ) SG6848 ) vs 95 110 125 ) vs 95 110 125 ) 110 125 www.sg.com.tw May.06, 2003 ...
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... Low Cost Green-Mode PWM Controller for Flyback Converters PWM Oscillator Frequency (FOSC) vs 0.6 0.7 0.8 0.9 1.0 FB (mA) © System General Corp. Version 1.2(IRO33.0010.B0) 1.1 1.2 1.3 1 Product Specification SG6848 www.sg.com.tw May.06, 2003 ...
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... Oscillator Operation A resistor connected from the RI pin to ground will generate a constant current source for the SG6848. This current is used to charge an internal capacitor. The charge-time determines the internal clock speed and the © System General Corp. ...
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... The turn-on and turn-off thresholds of the SG6848 are fixed internally at 16.3V/11.7V. During start-up, the hold-up capacitor must be charged to 16.3V through the start-up resistor, so that the SG6848 will be enabled. The hold-up capacitor will continue to supply V can be delivered from the auxiliary winding of the main transformer. V must not drop below 11 ...
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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 EE-16 IC SG6848 (Green PWM IC) PC817 TL431 www.sg.com.tw SG6848 VO GND R13 R12 May.06, 2003 ...
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... Product Specification SG6848 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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... Detail θ L1 Detail A Inches Min. Typ. Max. 0.057 0.006 0.036 0.045 0.051 0.011 0.020 0.003 0.009 0.114 0.110 0.063 0.037 0.075 0.020 0.018 0.024 0.024 0.010 0.004 0.004 0.010 0 ˚ 4 ˚ 8 ˚ 5 ˚ 10 ˚ 15 ˚ SG6848 www.sg.com.tw May.06, 2003 ...
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... RIGHT TO MAKE CHANGES System General reserves the right to change this document and/or this product without notice. Customers are advised to consult their System General sales representative before ordering. © System General Corp. Version 1.2(IRO33.0010.B0) DISCLAIMERS - 13 - Product Specification SG6848 www.sg.com.tw May.06, 2003 ...