sg6741tp Fairchild Semiconductor, sg6741tp Datasheet
sg6741tp
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sg6741tp Summary of contents
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Highly-Integrated Green-Mode PWM Controller FEATURES High-voltage start-up Low operating current (4mA) Linearly decreasing PWM frequency to 22kHz Frequency hopping to reduce EMI emission Peak-current-mode control Cycle-by-cycle current limiting Leading-edge blanking Synchronized slope compensation Gate output maximum voltage clamp (18V) V ...
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... Highly-Integrated Green-Mode PWM Controller MARKING INFORMATION SOP P: Z =Lead Free Null=regular package SG6741TP XXXXXXXX: Y: Year; WW: Week XXXXXXXXYWWV V: Assembly Location ORDERING INFORMATION Part Number Pb-Free SG6741SZ PIN DESCRIPTIONS Pin No. Symbol Function 1 GND Ground 2 FB Feedback Start-up Input 5 RI Reference Setting ...
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Highly-Integrated Green-Mode PWM Controller BLOCK DIAGRAM © System General Corp. Version 1.3.1 (IAO33.0047.B3 www.sg.com.tw • www.fairchildsemi.com Product Specification SG6741 October 30, 2007 ...
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Highly-Integrated Green-Mode PWM Controller ABSOLUTE MAXIMUM RATINGS Symbol Parameter V Supply Voltage DD V Input Voltage to HV Pin HV V Input Voltage to FB, SENSE, Pin L P Power Dissipation, T < 50° Thermal Resistance, Junction-to-Air ...
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Highly-Integrated Green-Mode PWM Controller Oscillator Section Symbol Parameter F Frequency in Nominal Mode OSC t Hopping Period HOP F Green-Mode Frequency OSC-G F Frequency Variation vs Frequency Variation vs. Temp. Deviation DT Feedback Input Section Symbol ...
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Highly-Integrated Green-Mode PWM Controller Gate Section Symbol Parameter DCY Maximum Duty Cycle MAX V Gate Low Voltage GATE-L V Gate High Voltage GATE-H tr Gate Rising Time tf Gate Falling Time I Gate Source Current GATE-SOURCE V Gate Output Clamping ...
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Highly-Integrated Green-Mode PWM Controller TYPICAL CHARACTERISTIC Start-up Current ( Temperature DD- -40 -25 - Temperature (℃) Start Threshold Voltage ( Temperature DD-ON 20.0 19.0 18.0 17.0 ...
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Highly-Integrated Green-Mode PWM Controller Frequency in nominal mode ( Temperature OSC -40 -25 - Temperature (℃) . © System General Corp. Version 1.3.1 (IAO33.0047.B3) Maximum Duty Cycle (DCY ...
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Highly-Integrated Green-Mode PWM Controller Operation Description Start-up Current For start-up, the HV pin is connected to the line input or bulk capacitor through an external resistor, R recommended as 100KΩ. Typical start-up current drawn from pin HV is 2mA and ...
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Highly-Integrated Green-Mode PWM Controller Built-in Slope Compensation The sensed voltage across the current-sense resistor is used for peak-current-mode control and pulse-by-pulse current limiting. Built-in slope compensation improves stability and prevents sub-harmonic oscillation. SG6741 inserts a synchronized positive-going ramp at every ...
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Highly-Integrated Green-Mode PWM Controller REFERENCE CIRCUIT CIRCUIT (12V/5A) CN1 CN1 R3 SG6741 GND GATE VDD C12 SENSE BOM Reference Component ...
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Highly-Integrated Green-Mode PWM Controller PACKAGE INFORMATION 8PINS-SOP( Dimensions Millimeter Symbol Min. A 1.346 A1 0.101 4.648 E 3.810 e 1.016 F H 5.791 L 0.406 θ˚ 0° © System General Corp. Version 1.3.1 ...
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Highly-Integrated Green-Mode PWM Controller © System General Corp. Version 1.3.1 (IAO33.0047.B3 www.sg.com.tw • www.fairchildsemi.com Product specification SG6741 October 30, 2007 ...