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MC33363A bảng dữ liệu(PDF) 7 Page - ON Semiconductor |
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MC33363A bảng dữ liệu(HTML) 7 Page - ON Semiconductor |
7 / 14 page MC33363A http://onsemi.com 7 PIN FUNCTION DESCRIPTION Pin Function Description 1 Startup Input This pin connects directly to the rectified ac line voltage source. Internally Pin 1 is tied to the drain of a high voltage startup MOSFET. During startup, the MOSFET supplies internal bias, and charges an external capacitor that connects from the VCC pin to ground. 2 − This pin has been omitted for increased spacing between the rectified ac line voltage on Pin 1 and the VCC potential on Pin 3. 3 VCCCC This is the positive supply voltage input. During startup, power is supplied to this input from Pin 1. When VCC reaches the UVLO upper threshold, the startup MOSFET turns off and power is supplied from an auxiliary transformer winding. 4, 5, 12, 13 GND These pins are the control circuit grounds. They are part of the IC lead frame and provide a thermal path from the die to the printed circuit board. 6 RT Resistor RT connects from this pin to ground. The value selected will program the Current Limit Comparator threshold and affect the Oscillator frequency. 7 CT Capacitor CT connects from this pin to ground. The value selected, in conjunction with resistor RT, programs the Oscillator frequency. 8 Regulator Output This 6.5 V output is available for biasing external circuitry. It requires an external bypass capacitor of at least 1.0 mF for stability. 9 Compensation This pin is the Error Amplifier output and is made available for loop compensation. It can be used as an input to directly control the PWM Comparator. 10 Voltage Feedback Input This is the inverting input of the Error Amplifier. It has a 2.6 V threshold and normally connects through a resistor divider to the converter output, or to a voltage that represents the converter output. 11 Overvoltage Protection Input This input provides runaway output voltage protection due to an external component or connection failure in the control loop feedback signal path. It has a 2.6 V threshold and normally connects through a resistor divider to the converter output, or to a voltage that represents the converter output. 14, 15 − These pins have been omitted for increased spacing between the high voltages present on the Power Switch Drain, and the ground potential on Pins 12 and 13. 16 Power Switch Drain This pin is designed to directly drive the converter transformer and is capable of switching a maximum of 700 V and 1.0 A. ORDERING INFORMATION Device Package Shipping† MC33363ADW SOIC−16WB 47 Units / Rail MC33363ADWG SOIC−16WB (Pb−Free) 47 Units / Rail MC33363ADWR2 SOIC−16WB 1000 / Tape & Reel MC33363ADWR2G SOIC−16WB (Pb−Free) 1000 / Tape & Reel MC33363AP PDIP−16 25 Units / Rail MC33363APG PDIP−16 (Pb−Free) 25 Units / Rail †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D. |
Số phần tương tự - MC33363A_05 |
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Mô tả tương tự - MC33363A_05 |
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