FAN6861 Fairchild Semiconductor, FAN6861 Datasheet - Page 5

• Manufacturer Part Number: FAN6861
• Description: A highly integrated PWM controller, FAN6861 provides several features to enhance the performance of flyback converters
• Manufacturer: Fairchild Semiconductor

© 2009 Fairchild Semiconductor Corporation
FAN6861 • Rev. 1.0.1
V
Feedback Input Section
Current Sense Section
Electrical Characteristics
V
DD
DD
Symbol
t
V
V
V
V
D-VDDOVP
V
V
V
V
V
V
V
t
t
I
I
t
I
I
V
Section
V
D-OCP
DD-SCP
DD-OVP
DD-BM
DD-OVP
FB-OLP
D-OLP
D-SCP
= 15V and T
DD-OFF
DD-ST
DD-OP
DD-LH
t
STHVA
SLOPE
Z
STHFL
DD-ON
DD-OP
DD-LH
t
t
A
LEB
OCP
FBO
PD
SS
FB
V
Delay to Output
Leading-Edge Blanking Time
Flat Threshold Voltage for Current Limit
Valley Threshold Voltage for Current Limit
OCP Trigger Level
Slope Compensation
Soft-Start Time
FB Pin Protection Delay Time for Peak
Loading
Input Voltage to Current Sense Attenuation
Input Impedance
FB Pin Open Voltage
Threshold Voltage for Open-loop Protection
Open-Loop Protection Delay Time
Short-Circuit Protection Delay Time
Continuously Operating Voltage
Turn-On Threshold Voltage
Turn-Off Voltage
Threshold Voltage for Output Short-Circuit
Protection (SCP)
V
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
DD
A
= 25°C, unless otherwise noted.
Over-Voltage Protection (Latch-Off)
Over-Voltage Protection (Latch-Off)
OVP Debounce Time
Parameter
5
V
At Green Mode
Duty > 51%
Duty = 0%
Duty = DCY
V
With 1nF Load on
Gate, V
GATE Open,
V
Test Condition
TH-ON
FB
DD
= V
= 5V
– 0.16V
FB-G
FB
≥ V
MAX
FB-N
V
Min.
1/4.5
16.5
+0.5
0.85
0.65
0.47
0.30
DD-OFF
100
700
270
700
8.5
5.0
4.3
7.5
Continued on following page…
24
24
25
14
20
3
V
Typ.
1/4.0
17.5
+1.0
0.89
0.70
0.50
0.33
10.0
DD-OFF
170
100
360
780
780
9.5
5.2
4.6
25
25
40
16
25
4
8
3
V
Max.
1/3.5
0.93
0.75
0.53
0.36
12.5
18.5
10.5
+1.5
DD-OFF
250
860
240
860
2.2
5.4
4.9
18
30
24
26
15
26
55
www.fairchildsemi.com
5
4
Unit
V/V
mA
mA
kΩ
ms
ms
ms
ms
µA
µA
ns
ns
µs
V
V
V
V
V
V
V
V
V
V
V
V
V