FSD146MRBN Fairchild Semiconductor, FSD146MRBN Datasheet - Page 7

• 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 5. Operating Supply Current (I
Figure 7. Startup Charging Current (I
Figure 9. Feedback Source Current (I
1.20
1.15
1.10
1.05
1.00
0.95
0.90
0.85
0.80
1.40
1.30
1.20
1.10
1.00
0.90
0.80
0.70
0.60
1.20
1.15
1.10
1.05
1.00
0.95
0.90
0.85
0.80
‐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]
A
=25°C.
CH
OP
FB
) vs. T
) vs. T
) vs. T
A
A
A
7
Figure 10. Shutdown Delay Current (I
Figure 8. Peak Drain Current Limit (I
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 6. Operating Switching Current (I
‐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
DELAY
LIM
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) vs. T
) vs. T
OPS
)
A
A