Marking Information
F : Fairchild Logo
Z: Plant Code
ZXYTT
FL103
TPM
Pin Configuration
Figure 4.
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
Top Mark
Pin Definitions
Figure 5.
Pin Configuration
Pin #
1
2
3
4
5
6
7
8
Name
CS
GATE
V DD
NC
VS
GND
NC
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 15 V.
Power Supply . IC operating current and MOSFET driving current are supplied using this
pin. This pin is connected to an external V DD capacitor of typically 10 μF. The threshold
voltages for startup and turn-off are 16 V and 7.5 V, respectively. The operating current is
lower than 5 mA.
No Connect . This pin is connected to GND or no connection. Does not connect any
voltage source.
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 DC link capacitor for high-voltage startup. This pin is
connected to an external startup resistor of typically 100 k ? .
? 2012 Fairchild Semiconductor Corporation
FL103 ? Rev. 1.0.2
3
www.fairchildsemi.com
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