FAN6862 Fairchild Semiconductor, FAN6862 Datasheet - Page 3

• Manufacturer Part Number: FAN6862
• Description: A highly integrated PWM controller, FAN6862 provides several features to enhance the performance of flyback converters
• Manufacturer: Fairchild Semiconductor

© 2009 Fairchild Semiconductor Corporation
FAN6862 • Rev. 1.0.2
Marking Information
Pin Configuration
Pin Definitions
Pin # DIP8
8
7
6
5
4
3
2
1
SSOT-6
Pin #
Figure 4. SSOT-6
1
2
3
4
5
6
SENSE
Name
GATE
GND
VDD
NC
NC
FB
RT
Ground.
Feedback. The FB pin provides the output voltage regulation signal. It
provides feedback to the internal PWM comparator, so that the PWM
comparator can control the duty cycle. This pin also provide for OLP: if V
larger than the trigger level and delays for a long time, the controller stops
and restarts.
No Connect Pin
Temperature Detection. An external NTC thermistor is connected from this
pin to GND for over-temperature protection. The impedance of the NTC
decreases at high temperatures. Once the voltage of the RT pin drops below
a threshold,
PWM output is disabled.
Current Sense. This pin senses the voltage across a resistor. When the
voltage reaches the internal threshold, PWM output is disabled. This activates
over-current protection. This pin also provides current amplitude information
for current-mode control.
No Connect Pin
Power Supply.
Driver Output. The totem-pole output driver for driving the power MOSFET.
Figure 3. Top Mark
3
Description
F
Z
X
Y
TT
T
P
M
ABx:
TT:
_ _ _
– Fairchild Logo
– Plant Code
– Package Type (N:DIP)
– 1-Digit Year Code
– 1-Digit Week Code
– Y: Green Package
– Manufacture Flow Code
– 2-Digit Die Run Code
Figure 5. DIP-8
:
:
ABD: FAN6862TY
Wafer Lot Code
Year Code
Week Code
www.fairchildsemi.com
FB
is