SG6846G Fairchild Semiconductor, SG6846G Datasheet - Page 5

• Manufacturer Part Number: SG6846G
• Description: A highly integrated PWM controller, SG6846G provides several features to enhance the performance of flyback converters
• Manufacturer: Fairchild Semiconductor

© 2008 Fairchild Semiconductor Corporation
SG6846G • Rev. 1.0.2
V
V
Feedback Input Section
Current Sense Section
Electrical Characteristics
V
DD
IN
DD
V
V
Symbol
t
t
t
SS-130KHz
V
V
D-VDDOVP
V
Z
V
V
V
SS-65KHz
V
V
V
I
STH1V-1/2
STH3V-1/2
V
t
V
I
Section
t
I
DD-OVP
V
D-OCP
DD-OVP
FB-OLP
D-OLP
= 15V and T
Section
DD-OFF
DD-ST
DD-OP
SENSE
t
SLOPE
Z
STH1V
STH3V
DD-ON
IN-OFF
DD-OP
DD-LH
t
A
IN-ON
LEB
FBO
PD
FB
V
Input Impedance
Delay to Output
Leading-Edge Blanking Time
Slope Compensation
Threshold Voltage for Current Limit
Threshold Voltage for Current Limit
OCP Threshold Voltage for Current Limit
OCP Threshold Voltage for Current Limit
Delay Time for Over-Current Protection
Period During Startup Time
Input Voltage to Current Sense Attenuation
Input Impedance
FB Pin Open Voltage
Threshold Voltage of 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
Operating Supply Current
V
V
V
PWM Turn-off Threshold Voltage
PWM Turn-on Threshold Voltage
DD
DD
DD
A
= 25°C unless otherwise noted.
Over-Voltage Protection (Latch off)
OVP Debounce Time
OVP Latch-up Holding Current
Parameter
5
V
GATE Open
R
V
At Green Mode
R
Duty = DCY
V
V
V
V
R
R
R
DD-ON
DD
I
IN
IN
IN
IN
I
I
I
I
Test Condition
= 26kΩ
= 26kΩ
= 26kΩ
= 26kΩ
= 13kΩ
= 1V
= 3V
= 1V
= 3V
= 5V
– 0.16V
MAX
V
+0.18
Min.
0.65
1/3.5
15.5
0.30
1.07
0.91
0.52
0.44
2.25
IN-OFF
470
270
470
9.5
4.0
4.7
4.5
Continued on following page…
23
60
30
3
V
+0.20
Typ.
0.70
1/4.0
16.5
10.5
IN-OFF
0.33
1.10
0.94
0.55
0.47
2.50
100
100
360
500
500
3.7
5.0
5.5
6.2
5.2
12
24
50
4
8
V
+0.22
0.75
Max.
1/4.5
IN-OFF
0.36
1.13
0.97
0.58
0.50
2.75
17.5
11.5
250
530
140
530
5.5
5.0
7.0
5.7
20
30
25
70
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5
Unit
V/V
mA
kΩ
ms
kΩ
ms
ms
ms
µA
µA
ns
ns
µs
V
V
V
V
V
V
V
V
V
V
V
V
V
V