FSFM261 Fairchild Semiconductor, FSFM261 Datasheet - Page 8

• Manufacturer Part Number: FSFM261
• Description: The FSFM260N/261N/300N is an integrated Pulse Width Modulator (PWM) and SenseFET specifically designed for high-performance offline Switch Mode Power Supplies (SMPS) with minimal external components
• Manufacturer: Fairchild Semiconductor

FSFM260N / FSFM261N / FSFM300N • Rev. 1.0.1
© 2009 Fairchild Semiconductor Corporation
Typical Performance Characteristics
Graphs are normalized at T
Figure 4. Operating Supply Current (I
1.2
1.0
0.8
0.6
0.4
0.2
0.0
1.2
1.0
0.8
0.6
0.4
0.2
0.0
1.2
1.0
0.8
0.6
0.4
0.2
0.0
Figure 8. Switching Frequency (f
-25
-25
-25
Figure 6. UVLO Stop Threshold Voltage
0
0
0
Temperature [°C]
Temperature [°C]
Temperature [°C]
(V
25
25
25
STOP
A
) vs. T
= 25°C.
50
50
50
A
75
75
75
OSC
100
OP
100
100
) vs. T
) vs. T
A
125
125
125
A
8
Figure 7. Startup Charging Current (I
1.2
1.0
0.8
0.6
0.4
0.2
0.0
1.2
1.0
0.8
0.6
0.4
0.2
0.0
1.2
1.0
0.8
0.6
0.4
0.2
0.0
Figure 9. Maximum Duty Cycle (D
-25
-25
-25
Figure 5. UVLO Start Threshold Voltage
0
0
0
Temperature [°C]
Temperature [°C]
Temperature [°C]
(V
25
25
25
START
50
50
50
) vs. T
A
75
75
75
MAX
100
100
100
CH
www.fairchildsemi.com
) vs. T
) vs. T
125
125
125
A
A