MIC2017 Micrel Semiconductor, MIC2017 Datasheet - Page 14

• Manufacturer Part Number: MIC2017
• Description: (MIC2007 / MIC2017) Adjustable Current Limit Power Distribution Switch
• Manufacturer: Micrel Semiconductor

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Micrel
This folding back of I
I
of V
1) is determined by R
October 2005
LIMIT
Figure 5. I
Figure 4. I
OUT
as a function of V
between I
OUT
OUT
in Current Limiting for V
in Current Limiting for V
OUT
LIMIT
= 0 and I
ON
OUT
of MIC2007/2017 and I
can be generalized by plotting
, as shown below. The slope
OUT
= I
LIMIT
(where I
IN
IN
- V
- V
OUT
OUT
LIMIT
LIMIT
≤1V
>1V
.
=
14
C
The CSLEW input is provided to increase control of the
output voltage ramp at turn-on. This input allows
designers the option of decreasing the output’s slew rate
(slowing the voltage rise) by adding an external
capacitance between the pin, CSLEW, and VIN. This
capacitance slows the rate at which the pass FET gate
voltage increases and thus, slows both the response to
an Enable command as well as V
value.
Figure 8 illustrates effect of C
output rise time.
SLEW
1.2
1.0
0.8
0.6
0.4
0.2
1.2
1.0
0.8
0.6
0.4
0.2
0
0
0
0
Normalized Output Current
Normalized Output Current
vs. Output Voltage (2.5V)
vs. Output Voltage (5V)
0.5
OUTPUT VOLTAGE (V)
1
OUTPUT VOLTAGE (V)
Figure 6.
Figure 7.
1.0
2
1.5
3
SLEW
2.0
OUT
4
on turn-ON delay and
’s ascent to its final
MIC2007/MIC2017
2.5
5
3.0
M9999-102805
6