?2003 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FAN7527B " Rev. 1.0.3
3
Pin Configuration
Figure 2.
Pin Configuration
Pin Definitions
Pin # Name
Description
1
INV
Inverting input of the error amplifier. The output of the boost converter should be resistively
divided to 2.5 V and connected to this pin.
2
EA_OUT
Output of the error amplifier. 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 2 V 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 high-frequency noise.
5
Idet
Zero Current Detection (ZCD) input.
6
GND
Ground
7
OUT
Gate driver output. Push-pull output stage is able to drive the power MOSFET with a peak
current of 500 mA.
8
V
CC
Supply voltage of driver and control circuits.
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