FPF2300 Fairchild Semiconductor, FPF2300 Datasheet - Page 9

• Manufacturer Part Number: FPF2300
• Manufacturer: Fairchild Semiconductor

© 2009 Fairchild Semiconductor Corporation
FPF2300/02/03 • Rev. 1.1.3
Typical Characteristics
Figure 27. Startup FLAGB Blanking Time (FPF2303)
2V/DIV
2V/DIV
2V/DIV
FLAGB
2V/DIV
2V/DIV
1A/DIV
2V/DIV
OUT
OUT
5V/DIV
5V/DIV
1A/DIV
ON
I
ON
IN
OUT
I
ON
OUT
IN
Figure 29. Current Limit at Startup with
Different Output Capacitor
Figure 25. t
C
OUT
= 47μF
t
START_BLANK
OFF
C
200μs/DIV
OUT
2ms/DIV
200μs/DIV
Response
= 100μF
C
C
OUT
OUT
IN = 5V
ON = 3.3V
C
R
OUT
L
C
R
= 220μF
= 500Ω
OUT
L
= 470μF
IN = 5V
ON = 3.3V
R
= 3.3Ω
= 0.1μF
L
= 10μF
= 5Ω
9
Figure 26. Over-Current Blanking Time (FPF2300/2)
FLAGB
2V/DIV
2V/DIV
1A/DIV
5V/DIV
2V/DIV
FLAGB
2V/DIV
1A/DIV
5V/DIV
5V/DIV
5V/DIV
5V/DIV
OUT
I
OUT
ON
I
OUT
OUT
ON
OUT
ON
IN
Figure 30. Output Voltage at Startup with
Figure 28. Auto-Restart Time (FPF2300)
Different Output Capacitor
C
OUT
= 47μF
C
OUT
t
BLANK
t
= 100μF
RSTRT
100ms/DIV
2ms/DIV
200μs/DIV
C
OUT
C
= 220μF
IN = 5V
C
R
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OUT
IN = 5V
C
R
OUT
L
OUT
L
IN = 5V
ON = 3.3V
R
= 2.8Ω
= 2.8Ω
L
= 470μF
= 5Ω
= 10μF
= 10μF