FPF2300 Datasheet, PDF (9/19 Pages) Fairchild Semiconductor – Dual-Output Current Limit Switch

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