FAN6793MY 데이터 시트보기 (PDF) - Fairchild Semiconductor
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FAN6793MY Datasheet PDF : 19 Pages
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Electrical Characteristics
VDD=18V; RI=24kΩ;TA =25°C, unless noted.
Symbol
Parameter
Conditions
ON/OFF
RON/OFF Impedance ON/OFF Pin
VON
High Threshold Level of
Synchronizing Signal
VOFF
Low Threshold Level of
Synchronizing Signal
Over Temperature Protection (OTP)
TOff
TRestart
Protection Junction
Temperature(1)
Restart Junction Temperature(2)
Flyback PWM Stage
FBFYB Feedback Input
AV-FLY
FB Input to Current Comparator
Attenuation
ZFB
Input Impedance
VHGH
Output High Voltage
FB Pin Open
VFB-OLP FB Open-Loop Trigger Level
tOLP
FB Open-Loop Protection Delay
VN
Green Mode Entry FB Voltage
SG
Slope of Green-Mode Modulation
VG
Green Mode Ending FB Voltage
VOZ-OFYB
VFBPWM for Zero Duty Cycle
(Forward Turn On)
IFYB Current Sense
ZCS
VLIMIT1
Input Impedance
Peak Current Limit Threshold
Voltage 1
VRMS=1V
VLIMIT2
Peak Current Limit Threshold
Voltage 2
VRMS=1.5V
tPD
Propagation Delay to GATE
Output
tBNK
Leading-Edge Blanking Time
ΔVSLOPE Slope Compensation
VS-SCP
Threshold Voltage for SENSE
Short-Circuit Protection
tD-SSCP
Delay Time for SENSE Short-
Circuit Protection
OFYB-GATE Driver
VDD=15V, OFYB Drops
to 9V
Duty=DCYMAX
VSENSE<0.15V,
RI=24KΩ
VOFYB-CLAMP
Flyback PWM Gate Output
Clamping Voltage
VDD=22V
VOL-OFYB
VOH-OFYB
tR-OFYB
Output Voltage Low
Output Voltage High
Rising Time
tF-OFYB Falling Time
DCYMAX-OFYB Maximum Duty Cycle
VDD=15V; IO=20mA
VDD=12V; IO=20mA
VDD=15V; Gate=1nF;
Gate=2~9V
VDD=15V; Gate=1nF;
Gate=9~2V
© 2008 Fairchild Semiconductor Corporation
FAN6791 / FAN6793 • Rev. 1.0.2
8
Min.
50
2.4
0.8
Typ.
3.0
1.0
Max. Units
100
kΩ
3.6
V
1.2
V
130
140
+150
°C
100
110
+120
°C
1/3.75
4
5.0
4.2
53
2.4
60
1.8
1.2
1/3.20
5
5.2
4.5
56
2.5
75
1.9
1.3
1/2.75
7
4.8
59
2.6
90
2.0
1.4
V/V
kΩ
V
V
ms
V
Hz/mV
V
V
12
kΩ
0.75
0.80
0.85
V
VLIMIT1 -0.1
V
60
120
ns
200
270
350
ns
0.34
0.37
0.41
V
0.1
0.15
0.2
V
100
180
240
µs
16
18
V
1.5
V
8
V
30
60
120
ns
30
50
90
ns
60
65
70
%
www.fairchildsemi.com
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