sg6741a Fairchild Semiconductor, sg6741a Datasheet - Page 6

• Manufacturer Part Number: sg6741a
• Description: Sg6741a ? Highly Integrated Green-mode Pwm Controller
• Manufacturer: Fairchild Semiconductor

© 2008 Fairchild Semiconductor Corporation
SG6741A • Rev. 1.0.1
Electrical Characteristics
V
Current Sense Section
Gate Section
I
V
GATE-SOURCE
DD
Symbol
GATE-CLAMP
DCY
DCY
V
V
V
Z
V
=15V; T
GATE-L
GATE-H
SENSE
STHVA
t
STHFL
t
LEB
PD
tr
tf
MAX
MAX
A
=25C°, unless otherwise noted.
Input Impedance
Current Limit Flatten Threshold Voltage
Current Limit Valley Threshold Voltage
Delay to Output
Leading-Edge Blanking Time
Maximum Duty Cycle
Gate Low Voltage
Gate High Voltage
Gate Rising Time
Gate Falling Time
Gate Source Current
Gate Output Clamping Voltage
Maximum Duty Cycle
f
Parameter
f
OSC
PWM Frequency
OSC
-
V
FB-ZDC
(Continued)
V
Figure 5. PWM Frequency
FB-G
V
V
V
V
V
V
V
STHFL
DD
DD
DD
DD
DD
DD
6
=15V, I
=12.5V, I
=15V, C
=15V, C
=15V, GATE=6V
=22V
V
FB-N
Conditions
–V
STHVA
O
L
L
=50mA
=1nF
=1nF
O
=-50mA
Min.
V
0.87
0.18
275
150
250
60
30
60
FB
8
Typ.
0.90
0.22
100
350
250
12
65
50
65
Max.
0.93
0.26
200
425
350
1.5
70
90
18
70
www.fairchildsemi.com
Units
KΩ
mA
ns
ns
ns
ns
%
%
V
V
V
V
V