FAN6862 Fairchild Semiconductor, FAN6862 Datasheet - Page 5

• 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
V
Feedback Input Section
Current Sense Section
Oscillator Section
Electrical Characteristics
V
DD
t
DD
SOFT-START
Symbol
t
V
V
V
D-VDDOVP
V
V
V
V
V
V
V
V
f
I
FB-OPEN
t
V
V
I
I
I
t
t
Section
OSC-G
FB-ZDC
DD-OFF
DD-OP
DD-BM
DD-OVP
FB-OLP
D-OLP
f
= 15V and T
DD-ST
DD-LH
t
STHVA
SLOPE
Z
STHFL
hop-1
hop-3
DD-OP
DD-ON
DD-LH
t
OSC
f
f
A
LEB
FB-N
FB-G
PD
DV
DT
FB
V
Delay to Output
Leading-Edge Blanking Time
Flat Threshold Voltage for Current Limit
Valley Threshold Voltage for Current Limit
Slope Compensation
Period During Startup time
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
Frequency Variation vs. V
Frequency Variation vs. Temperature
Deviation
Input-Voltage to Current-Sense Attenuation
Input Impedance
FB Pin Open Voltage
Threshold Voltage for Open-Loop
Protection
Open-Loop Protection Delay Time
Continuously Operating Voltage
Turn-on Threshold Voltage
Turn-off Voltage
Threshold voltage for Latch-Off release
Startup Current
Normal Operating Supply Current
Green-Mode Operating Supply Current
V
V
Latch-Off Holding Current
DD
DD
A
= 25°C unless otherwise noted.
Over-Voltage Protection
OVP Debounce Time
OSC-G
Parameter
DD
Center
Frequency
Hopping Range
Hopping Range
Deviation
5
V
C
GATE open, V
V
Duty>51%
Duty=0%
Duty=DCY
V
V
V
V
V
V
T
A
DD-ON
DD
FB
FB
FB
FB
FB
DD
L
=1nF
= -40 to +105°C
Test Condition
>V
≥V
=V
≥V
=V
=5V
=11.5V to 20V
FB-N
FB-N
FB-N
FB-G
FB-G
–0.16V
MAX
FB
=V
FB-G
Min.
1/4.0
Continued on the following page…
270
7.5
5.0
4.3
15
24
53
62
3
0
0.273
Typ.
1/3.5
0.44
11.5
22.5
0.02
±4.2
±2.9
360
100
0.5
8.5
5.5
5.2
4.6
4.4
2.2
2.1
1.7
16
25
30
40
56
65
4
8
3
4
Max. Unit
1/3.0
2.00
250
9.5
2.5
5.4
4.9
www.fairchildsemi.com
24
17
26
50
65
68
30
60
5
4
2
kHz
V/V
kHz
mA
mA
ms
ms
ms
μA
μA
kΩ
ms
μs
ns
ns
%
%
V
V
V
V
V
V
V
V
V
V
V
V
V