Microchip Technology MCP1640RD-4ABC 데이터 시트
2011 Microchip Technology Inc.
DS22234B-page 5
MCP1640/B/C/D
2.0
TYPICAL PERFORMANCE CURVES
Note: Unless otherwise indicated,
V
IN
= EN = 1.2V, C
OUT
= C
IN
= 10 µF, L
= 4.7 µH, V
OUT
= 3.3V, I
LOAD
= 15 mA, T
A
= +25°C.
FIGURE 2-1:
V
OUT
I
Q
vs. Ambient
Temperature in PFM Mode.
FIGURE 2-2:
V
OUT
I
Q
vs. Ambient
Temperature in PWM Mode.
FIGURE 2-3:
Maximum I
OUT
vs. V
IN
.
FIGURE 2-4:
2.0V V
OUT
PFM / PWM
Mode Efficiency vs. I
OUT
.
FIGURE 2-5:
3.3V V
OUT
PFM / PWM
Mode Efficiency vs. I
OUT
.
FIGURE 2-6:
5.0V V
OUT
PFM / PWM
Mode Efficiency vs. I
OUT
.
Note:
The graphs and tables provided following this note are a statistical summary based on a limited number of
samples and are provided for informational purposes only. The performance characteristics listed herein are
not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified
operating range (e.g., outside specified power supply range) and therefore outside the warranted range.
samples and are provided for informational purposes only. The performance characteristics listed herein are
not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified
operating range (e.g., outside specified power supply range) and therefore outside the warranted range.
10.0
12.5
15.0
17.5
20.0
22.5
25.0
27.5
-40
-25
-10
5
20
35
50
65
80
Ambient Temperature (°C)
I
Q
PFM Mod
e
(
µ
A
)
V
OUT
= 2.0V
V
OUT
= 5.0V
V
OUT
= 3.3V
V
IN
= 1.2V
150
175
200
225
250
275
300
-40
-25
-10
5
20
35
50
65
80
Ambient Temperature (°C)
I
Q
P
W
M Mo
d
e
(
µ
A
)
V
OUT
= 3.3V
V
OUT
= 5.0V
V
IN
= 1.2V
0
100
200
300
400
500
600
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
V
IN
(V)
I
OU
T
(m
A
)
V
OUT
= 3.3V
V
OUT
= 2.0V
V
OUT
= 5.0V
0
10
20
30
40
50
60
70
80
90
100
0.01
0.1
1
10
100
1000
I
OUT
(mA)
E
ff
ici
en
cy (
%
)
V
OUT
= 2.0V
V
IN
= 0.8V
V
IN
= 1.2V
V
IN
= 1.6V
PWM / PFM
PWM ONLY
0
10
20
30
40
50
60
70
80
90
100
0.01
0.1
1
10
100
1000
I
OUT
(mA)
E
ff
ici
e
n
cy
(
%
)
V
OUT
= 3.3V
V
IN
= 0.8V
V
IN
= 1.2V
V
IN
= 2.5V
PWM / PFM
PWM ONLY
0
10
20
30
40
50
60
70
80
90
100
0.01
0.1
1
10
100
1000
I
OUT
(mA)
E
ff
ici
e
n
cy
(
%
)
PWM / PFM
PWM ONLY
V
OUT
= 5.0V
V
IN
= 1.2V
V
IN
= 1.8V
V
IN
= 2.5V