FAN6863R Fairchild Semiconductor, FAN6863R Datasheet - Page 6

• Manufacturer Part Number: FAN6863R
• Description: A highly integrated PWM controller, FAN6863 provides several features to enhance the performance of flyback converters
• Manufacturer: Fairchild Semiconductor

© 2011 Fairchild Semiconductor Corporation
FAN6863 • Rev. 1.0.1
Electrical Characteristics
V
Oscillator Section
V
Symbol
DD
V
V
FB-ZDCR
f
V
V
t
t
OSC-G
FB-ZDC
FB-ZDC
f
hop-1
hop-3
= 15 and T
OSC
f
f
FB-N
FB-G
DV
DT
-
Normal PWM Frequency
Hopping Period 1
Hopping Period 3
Green Mode Minimum Frequency
FB Threshold Voltage for Frequency
Reduction
FB Voltage at f
FB Threshold Voltage for Zero-Duty
ZDC Hysteresis
Frequency Variation vs. V
Frequency Variation vs. Temperature
Deviation
A
= 25°C, unless otherwise noted.
PWM Frequency
f
f
OSC-G
OSC
OSC-G
V
Parameter
FB-ZDC
(Continued)
V
FB-ZDCR
DD
Center Frequency V
Hopping Range
Deviation
Figure 5. PWM Frequency
V
FB-G
6
V
V
V
V
V
V
T
FB-N
A
FB
FB
FB
FB
FB
DD
= -40 to +105°C
> V
 V
= V
 V
= V
= 7.5V to 21V
Condition
FB-N
FB-N
FB-N
FB-G
FB-G
V
FB
Min.
60
Continued on following page…
Typ.
±4.2
±2.9
11.5
22.5
0.15
4.4
2.5
2.2
1.6
0.5
65
Max.
2.0
68
2
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Unit
kHz
kHz
ms
ms
%
%
V
V
V
V