FSD176MRT Fairchild Semiconductor, FSD176MRT Datasheet - Page 8

• Manufacturer Part Number: FSD176MRT
• Description: The FSD176MRT is an integrated Pulse Width Modulation (PWM) controller and SenseFET specifically designed for offline Switch-Mode Power Supplies (SMPS) with minimal external components
• Manufacturer: Fairchild Semiconductor

© 2011 Fairchild Semiconductor Corporation
FSD176MRT • Rev. 1.0.0
Typical Performance Characteristics
Characteristic graphs are normalized at T
Figure 13. Shutdown Feedback Voltage (V
Figure 11. UVLO Threshold Voltage (V
1.20
1.15
1.10
1.05
1.00
0.95
0.90
0.85
0.80
1.20
1.15
1.10
1.05
1.00
0.95
0.90
0.85
0.80
1.20
1.15
1.10
1.05
1.00
0.95
0.90
0.85
0.80
Figure 15. Switching Frequency (f
‐40'C ‐20'C 0'C
‐40'C ‐20'C 0'C
‐40'C ‐20'C 0'C
25'C 50'C 75'C 90'C 110'C 120'C 125'C
25'C 50'C 75'C 90'C 110'C 120'C 125'C
25'C 50'C 75'C 90'C 110'C 120'C 125'C
Temperature [ °C]
Temperature [ °C]
Temperature [ °C]
A
=25°C.
S
START
) vs. T
SD
) vs. T
) vs. T
A
A
A
8
Figure 12. UVLO Threshold Voltage (V
Figure 14. Over-Voltage Protection (V
1.20
1.15
1.10
1.05
1.00
0.95
0.90
0.85
0.80
1.20
1.15
1.10
1.05
1.00
0.95
0.90
0.85
0.80
1.20
1.15
1.10
1.05
1.00
0.95
0.90
0.85
0.80
Figure 16. Maximim Duty Ratio (D
‐40'C ‐20'C
‐40'C ‐20'C 0'C
‐40'C ‐20'C 0'C
0'C
25'C 50'C 75'C 90'C 110'C 120'C 125'C
25'C 50'C 75'C 90'C 110'C 120'C 125'C
25'C 50'C 75'C 90'C 110'C 120'C 125'C
Temperature [ °C]
Temperature [ °C]
Temperature [ °C]
MAX
STOP
OVP
) vs. T
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) vs. T
) vs. T
A
A
A