FSD146MRBN Fairchild Semiconductor, FSD146MRBN Datasheet - Page 8

• Manufacturer Part Number: FSD146MRBN
• Description: The FSD146MRBN is an integrated Pulse Width Modulation (PWM) controller and SenseFET designed for offline Switch-Mode Power Supplies (SMPS) with minimal external components
• Manufacturer: Fairchild Semiconductor

© 2011 Fairchild Semiconductor Corporation
FSD146MRBN • Rev. 1.0.0
Typical Performance Characteristics
Characteristic graphs are normalized at T
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 13. Shutdown Feedback Voltage (V
Figure 15. Switching Frequency (f
‐40'C ‐20'C
‐40'C ‐20'C
‐40'C ‐20'C
0'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]
vs. T
A
A
=25°C.
S
START
) vs. T
) vs. T
SD
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. Maximum Duty Ratio (D
‐40'C ‐20'C
‐40'C ‐20'C
‐40'C ‐20'C
0'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