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FAN6861TY датащи(PDF) 3 Page - Fairchild Semiconductor

номер детали FAN6861TY
подробное описание детали  Low-Cost, Highly Integrated, Green-Mode PWM Controller for Peak Power Management
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производитель  FAIRCHILD [Fairchild Semiconductor]
домашняя страница  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

FAN6861TY датащи(HTML) 3 Page - Fairchild Semiconductor

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© 2009 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FAN6861 • Rev. 1.0.1
3
Marking Information
Figure 3. Top Mark
Pin Configuration
Figure 4. Pin Configuration
Pin Definitions
Pin #
Name Description
1
GND
Ground.
2
FB
This pin is internally connected to the inverting input of the PWM comparator. The collector of
an opto-coupler is typically tied to this pin. For stable operation, a capacitor should be placed
between this pin and GND. If the voltage of this pin is higher than 4.6V for longer than 780ms,
the overload protection is triggered and PWM output is disabled.
3
RT
This pin is for programmable over-temperature protection. An external NTC thermistor is
connected between this pin and GND pin. Once the voltage of this pin drops below a threshold
of 0.7V, PWM output is disabled.
4
SENSE
This pin is for current sense. This pin senses the voltage across a resistor. The voltage of this
pin is compared with the feedback information determining the PWM duty cycle.
5
VDD
This pin is the positive supply voltage input.
6
GATE
The totem-pole output driver to drive the gate of power MOSFET. Soft driving waveform is
implemented to reduce EMI.
AAR: FAN6861
TT: Wafer lot code
• • •: Year code
_ _ _: Week code


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