FSL127H Fairchild Semiconductor, FSL127H Datasheet - Page 3

• Manufacturer Part Number: FSL127H
• Description: The highly integrated FSL127H consists of a current mode Pulse Width Modulator (PWM) and an avalanche-rugged 700V SenseFET
• Manufacturer: Fairchild Semiconductor

© 2010 Fairchild Semiconductor Corporation
FSL127H • Rev. 1.0.2
Pin Configuration
Pin Definitions
Pin #
1
2
3
4
5
6
7
8
Name
Drain
Drain
Drain
GND
V
FB
V
HV
DD
IN
Description
Ground. SenseFET source terminal on primary side and internal control ground.
Power Supply. The internal protection circuit disables PWM output as long as V
OVP trigger point.
Feedback. The signal from the external compensation circuit is fed into this pin. The PWM duty
cycle is determined in response to the signal on this pin and the current-sense signal on the
SENSE pin.
Line-Voltage Detection. The line-voltage detection is used for constant output power limit. It is
suggested to add a low pass filter to filter out line ripple on bulk capacitor.
Startup. For startup, this pin is pulled high to the line input or bulk capacitor via resistors.
SenseFET Drain. High-voltage power SenseFET drain connection.
SenseFET Drain. High-voltage power SenseFET drain connection.
SenseFET Dain. High-voltage power SenseFET drain connection.
Figure 3. Pin Configuration
3
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 (N: DIP)
P – Y: Green Package
M – Manufacture Flow Code
DD
exceeds the
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