Data Sheet
© 2007 Fairchild Semiconductor Corporation www.fairchildsemi.com
FSQ0365, FSQ0265, FSQ0165, FSQ321 • Rev. 1.0.6 9
FSQ0365/0265/0165/321 — Green Mode Fairchild Power Switch (FPS™) for Valley Switching Converter
Typical Performance Characteristics
Characteristic graphs are normalized at T
A
=25°C.
-25 0 25 50 75 100 125
0.0
0.2
0.4
0.6
0.8
1.0
1.2
Normalized
Temperature [°C]
-25 0 25 50 75 100 125
0.0
0.2
0.4
0.6
0.8
1.0
1.2
Normalized
Temperature [°C]
Figure 4. Operating Supply Current (I
OP
) vs. T
A
Figure 5. UVLO Start Threshold Voltage (V
START
)
vs. T
A
-25 0 25 50 75 100 125
0.0
0.2
0.4
0.6
0.8
1.0
1.2
Normalized
Temperature [°C]
-25 0 25 50 75 100 125
0.0
0.2
0.4
0.6
0.8
1.0
1.2
Normalized
Temperature [°C]
Figure 6. UVLO Stop Threshold Voltage (V
STOP
)
vs. T
A
Figure 7. Startup Charging Current (I
CH
) vs. T
A
-25 0 25 50 75 100 125
0.0
0.2
0.4
0.6
0.8
1.0
1.2
Normalized
Temperature [°C]
-25 0 25 50 75 100 125
0.0
0.2
0.4
0.6
0.8
1.0
1.2
Normalized
Temperature [°C]
Figure 8. Initial Switching Frequency (f
S
) vs. T
A
Figure 9. Maximum On Time (t
ON.MAX
) vs. T
A