FAN103 Fairchild Semiconductor, FAN103 Datasheet - Page 3

• Manufacturer Part Number: FAN103
• Description: This third-generation Primary Side Regulation (PSR) and highly integrated PWM controller provides several features to enhance the performance of low-power flyback converters
• Manufacturer: Fairchild Semiconductor

© 2010 Fairchild Semiconductor Corporation
FAN103 • Rev. 1.0.5
Marking Information
Pin Configuration
Pin Definitions
Pin #
8
1
2
3
4
5
6
7
COMR
Name
GATE
GND
VDD
NC
CS
VS
HV
Description
Current Sense. This pin connects a current sense resistor, to detect the MOSFET current for
peak-current-mode control in CV mode, and provides the output-current regulation in CC mode.
PWM Signal Output. This pin uses the internal totem-pole output driver to drive the power
MOSFET. It is internally clamped below 15V.
Power Supply. IC operating current and MOSFET driving current are supplied using this pin.
This pin is connected to an external V
startup and turn-off are 16V and 5V, respectively. The operating current is lower than 5mA.
Cable Compensation. This pin connects a capacitance between the COMR and GND pins for
compensation voltage drop due to output cable loss in CV mode.
Voltage Sense. This pin detects the output voltage information and discharge time based on
voltage of auxiliary winding.
Ground
No Connect
High Voltage. This pin connects to bulk capacitor for high-voltage startup.
Figure 5. Pin Configuration
Figure 4.
3
DD
Top Mark
capacitor of typically 10µF. The threshold voltages for
F: Fairchild Logo
Z: Plant Code
X: 1-Digit Year Code
Y: 1-Digit Week Code
TT: 2-Digit Die Run Code
T: Package Type (M=SOP)
P: Y=Green Package
M: Manufacture Flow Code
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