FAN302UL Fairchild Semiconductor, FAN302UL Datasheet - Page 3

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FAN302UL

Manufacturer Part Number
FAN302UL
Description
This highly integrated PWM controller provides several features to enhance the performance of flyback converters
Manufacturer
Fairchild Semiconductor
Datasheet

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© 2011 Fairchild Semiconductor Corporation
FAN302UL • Rev. 1.0.2
Marking Information
Pin Configuration
Pin Definitions
Pin #
1
2
3
4
5
6
7
8
Name
GATE
GND
VDD
NC
CS
VS
FB
HV
Current Sense. This pin connects a current-sense resistor to detect the MOSFET current for
Peak-Current-Mode control for output regulation. The current-sense information is also used to
estimate the output current for CC regulation.
PWM Signal Output. This pin has an internal totem-pole output driver to drive the power
MOSFET. It is internally clamped at 15V.
Power Supply. IC operating current and MOSFET driving current are supplied through this pin.
This pin is typically connected to an external V
Voltage Sense. This pin detects the output voltage information and diode current discharge
time based on voltage of the auxiliary winding.
Ground
Feedback. Typically, an Opto-Coupler is connected to this pin to provide feedback information
to the internal PWM comparator. This feedback is used to control the duty cycle in CV
regulation.
No Connect
High Voltage. This pin connects to the DC bus for high-voltage startup.
Figure 5. Pin Assignments
Figure 4.Top Mark
3
Description
DD
capacitor.
F- Fairchild Logo
Z: Assembly Plant Code
X: Year Code
Y: Week Code
TT: Die Run Code
T: M=SOP
P: Y= Green Package
M: Manufacture Flow Code
www.fairchildsemi.com

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