FAN6862R Fairchild Semiconductor, FAN6862R Datasheet - Page 3

• Manufacturer Part Number: FAN6862R
• Description: A highly integrated PWM controller, FAN6862R/L provides several features to enhance the performance of flyback converters
• Manufacturer: Fairchild Semiconductor

© 2009 Fairchild Semiconductor Corporation
FAN6862R/L • Rev. 1.0.0
Marking Information
Pin Configuration
Pin Definitions
Pin # Name
1
2
3
4
5
6
SENSE
GATE
GND
VDD
RT
FB
Power Supply Power supply
Driver Output The totem-pole output driver for driving the power MOSFET.
Temperature
Function
Feedback
Detection
Ground
Current
Sense
ABxTT
• • • •
- - -
Description
Ground
The FB pin provides the output voltage regulation signal. It provides feedback to
the internal PWM comparator for control of the duty cycle. This pin also provide for
OLP: if V
stops and restarts.
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.
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.
FB
Figure 4. Pin Assignments
is larger than the trigger level and remains for a long time, the controller
Figure 3. Top Mark
3
ABx:
TT:
_ _ _
:
:
ABA: FAN6862LTY
ABC: FAN6862RTY
Wafer Lot Code
Year Code
Week Code
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