Microchip Technology MCP1256/7/8/9EV データシート
MCP1256/7/8/9
DS21989B-page 8
2006-2013 Microchip Technology Inc.
TYPICAL PERFORMANCE CURVES
(CONTINUED)
NOTE: Unless otherwise indicated, C
IN
=
C
OUT
=
10 µF, C
1
=
C
2
=
1 µF, I
OUT
=
10 mA, and T
A
= +25°C.
FIGURE 2-13:
BYPASS Impedance
(R
BYPASS
) vs. Supply Voltage (V
IN
).
FIGURE 2-14:
Output Voltage Ripple vs.
Time - Normal 2x Mode.
FIGURE 2-15:
Output Voltage Ripple vs.
Time - Normal 2x Mode.
FIGURE 2-16:
Output Voltage Ripple vs.
Time - Normal 2x Mode.
FIGURE 2-17:
Output Voltage Ripple vs.
Time - Normal 1.5x Mode.
FIGURE 2-18:
Output Voltage Ripple vs.
Time - Normal 1.5x Mode.
1.0
1.2
1.4
1.6
1.8
2.0
1.8
2.1
2.4
2.7
3.0
3.3
3.6
Input Voltage (V)
B
Y
P
A
S
S
Im
pedanc
e (
Ω
)
-0.04
-0.03
-0.02
-0.01
0.00
0.01
0.02
0.03
0.04
0
1
2
3
4
5
6
7
8
9
10
Time (µs)
O
u
tp
u
t V
o
lt
ag
e
R
ip
p
le (V
)
V
IN
= 2.4V
I
OUT
= 10 mA
-0.04
-0.03
-0.02
-0.01
0.00
0.01
0.02
0.03
0.04
0
1
2
3
4
5
6
7
8
9
10
Time (µs)
O
u
tput
V
o
lt
ag
e R
ippl
e (
V
)
V
IN
= 2.4V
I
OUT
= 50 mA
-0.04
-0.03
-0.02
-0.01
0.00
0.01
0.02
0.03
0.04
0
1
2
3
4
5
6
7
8
9
10
Time (µs)
O
u
tput
V
o
lt
age R
ip
p
le
(
V
)
V
IN
= 2.4V
I
OUT
= 100 mA
-0.04
-0.03
-0.02
-0.01
0.00
0.01
0.02
0.03
0.04
0
1
2
3
4
5
6
7
8
9
10
Time (µs)
O
u
tput
V
o
lt
age R
ip
p
le
(
V
)
V
IN
= 3.0V
I
OUT
= 10 mA
-0.04
-0.03
-0.02
-0.01
0.00
0.01
0.02
0.03
0.04
0
1
2
3
4
5
6
7
8
9
10
Time (µs)
O
u
tput
V
o
lt
ag
e R
ippl
e (
V
)
V
IN
= 3.0V
I
OUT
= 50 mA