FAN6862L Datasheet, PDF (3/16 Pages) Fairchild Semiconductor – Highly Integrated Green-Mode PWM Controller

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