SG6741A Ver la hoja de datos (PDF) - Fairchild Semiconductor
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Fabricante
SG6741A Datasheet PDF : 12 Pages
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Electrical Characteristics (Continued)
VDD=15V; TA=25C°, unless otherwise noted.
PWM Frequency
f OSC
fOSC-
VFB-ZDC VFB-G
V FB-N
VFB
Figure 5. PWM Frequency
Symbol
Parameter
Conditions
Current Sense Section
ZSENSE
VSTHFL
VSTHVA
tPD
tLEB
Input Impedance
Current Limit Flatten Threshold Voltage
Current Limit Valley Threshold Voltage VSTHFL–VSTHVA
Delay to Output
Leading-Edge Blanking Time
Gate Section
DCYMAX Maximum Duty Cycle
VGATE-L Gate Low Voltage
VGATE-H Gate High Voltage
tr
Gate Rising Time
tf
Gate Falling Time
IGATE-SOURCE Gate Source Current
VGATE-CLAMP Gate Output Clamping Voltage
DCYMAX Maximum Duty Cycle
VDD=15V, IO=50mA
VDD=12.5V, IO=-50mA
VDD=15V, CL=1nF
VDD=15V, CL=1nF
VDD=15V, GATE=6V
VDD=22V
Min. Typ. Max. Units
12
KΩ
0.87 0.90 0.93
V
0.18 0.22 0.26
V
100 200
ns
275 350 425
ns
60
65
70
%
1.5
V
8
V
150 250 350
ns
30
50
90
ns
250
mA
18
V
60
65
70
%
© 2008 Fairchild Semiconductor Corporation
SG6741A • Rev. 1.0.1
6
www.fairchildsemi.com
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