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SA7527S Datasheet(PDF) 4 Page - Silan Microelectronics Joint-stock |
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SA7527S Datasheet(HTML) 4 Page - Silan Microelectronics Joint-stock |
4 / 8 page SA7527 HANGZHOU SILAN MICROELECTRONICS CO.,LTD REV:1.0 2005.07.22 Http: www.silan.com.cn Page 4 of 8 PIN CONFIGURATIONS PIN DESCRIPTIONS Pin no. Pin name Description 1 INV Inverting input of the error amplifier. The output of the boost converter should be resistively divided to 2.5V and connected to this pin. 2 EA_OUT The output of the error amplifier. A feedback compensation network is placed between this pin and the INV pin. 3 MULT Input to the multiplier stage. The full-wave rectified AC voltage is divided to less than 2V and is connected to this pin. 4 CS Input of the PWM comparator. The MOSFET current is sensed by a resistor and the resulting voltage is applied to this pin. An internal R/C filter is included to reject any high frequency noise. 5 Idet Zero current detection input. 6 GND The ground potential of all the pins. 7 OUT Gate driver output. The push pull output stage is able to drive the Power MOSFET with peak current of 500mA. 8 VCC Supply voltage of driver and control circuits. ELECTRICAL CHARACTERISTICS CURVES Figure 1. Error Amplifier Output Voltage vs Current Sensing Threshold Figure 2. Multiplier Input Voltage vs Current Sensing Threshold Vm 1= 1. 5V Vm 1= 1. 0V (To be continued) |
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