SG6842 System General, SG6842 Datasheet
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SG6842
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SG6842 Summary of contents
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... The latch will reset when the temperature cools off sufficiently, or when the VDD power supply is disabled. SG6842 series controllers are available in both 8-pin DIP and SO packages. From bridge rectifier D1 127~ 373VDC ...
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... DIP SOP XXXXXXX: Wafer Lot YY: Year; WW: Week V: Assembly Location ORDERING INFORMATION The SG6842 family of controllers is distinguished for its protection features and burst-mode functionality. Green-Mode Function: Linearly Decreasing Frequency and Burst-Mode OTP Latch: Part Number Reset when AC is unplugged (L). SG6842BS ...
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... Linear-Mode with Burst-Mode: After the PWM frequency linearly decreases from the maximum frequency of 65kHz to around 22kHz, the controller can enter into burst-mode. In burst-mode, PWM completely and the V voltage begins dropping. When V DD the SG6842 will start to send out PWM signals at a frequency of 27kHZ. © System General Corp. Version 0.1(IRO33.0009.B0) Hysteresis OTP: OVP Latch: ...
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... The line voltage is detected to compensate the output power limit, so that it can be kept constant over a universal AC input range A resistor from the RI pin to ground will generate a constant current source for the SG6842. This current charges an internal capacitor. This determines the switching frequency. ...
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... System General Corp. Version 0.1(IRO33.0009.B0 Current 5V source O.V.P. Soft ON/OFF + Driver Internal BIAS Q Green Mode D o.s.c. Controller O.T.P. Bnk 1 GND - 5 - Preliminary Specification SG6842 VDD GATE Q2 Rg slope Compensation 0.15V Rs ∑ 0.85V www.sg.com.tw Apr.09, 2003 SENSE FB ...
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... Junction-Air DIP 82.5 SOP 141 - 150 - -40 to 125 - -65 to +150 10 sec DIP 260 10 sec SOP 230 - 2.0 - 200 Min. - -30 Test Condition Min. 1/3 SG6842 Unit °C/W °C °C °C ° Max. Unit °C Typ. Max. Unit 1/4 1/4 ...
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... VDD=15V Ri=26KΩ VDD=11 to 20V Ta=- ℃ VTH(OFF) + 0.8 Test Condition Min 260 Test Condition Min. VDD= 12V 50mA VDD= 12V 50mA 8V VDD=15V, CL=1nF 150 VDD=15V, CL=1nF 30 VDD=25V - 7 - SG6842 Typ. Max. Unit 12 16 kΩ 100 200 nsec 0.85 0.9 V -0.15 -0. msec 32 msec Typ. Max. ...
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... VDD Over Voltage Protection Debounce (Disable PWM Output) VDD-ZENER VDD ZENER Crowbar © System General Corp. Version 0.1(IRO33.0009.B0) Preliminary Specification Test Condition Min. Ri=26KΩ 64 1.015 2 1.05 Test Condition Min. 15.5 9.5 - 23.5 IDD = 10mA SG6842 Typ. Max. Unit 1.05 1.085 msec 1.15 1.25 V Typ. Max. Unit 16.5 17.5 V 10.5 11 ...
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... Highly-Integrated Green-Mode PWM Controller www.DataSheet4U.com TYPICAL CHARACTERISTICS This page is purposely left blank. © System General Corp. Version 0.1(IRO33.0009.B0) Preliminary Specification - 9 - SG6842 www.sg.com.tw Apr.09, 2003 ...
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... VDD during start-up. Gate Output / Soft Driving The BiCMOS output stage of a SG6842 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 ...
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... Protection Latch Circuit In some applications, latch operation for OVP or OTP may be necessary. For the SG6842 family, the optional built in latch function provides a versatile protection feature that does not require external components. See ordering information for a detailed description ...
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... Reference Component Q2 MOS 2A/600V R1,R2 R 470KΩ 1/ 47Ω 1/ 22Ω 1/ 4.7KΩ 1/ 0.5Ω 1W R8,R12 R 510KΩ 1/ 20KΩ 1/8W 1% R10 R 100Ω 1/8W THER1 Thermistor SCK054 T1 Transformer EI28 U1 IC SG6842 U2 IC 4N35D U3 IC TL431 VZ1 SG6842 www.sg.com.tw Apr.09, 2003 ...
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... Preliminary Specification SG6842 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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... Preliminary Specification SG6842 C L Typ. Max. 0.069 0.010 0.016 0.008 0.196 0.157 0.050 0.015X45˚ 0.244 0.050 8˚ www.sg.com.tw Apr.09, 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 0.1(IRO33.0009.B0) DISCLAIMERS - 15 - Preliminary Specification SG6842 www.sg.com.tw Apr.09, 2003 ...