MCP1640/B/C/D
2.0
Note:
TYPICAL PERFORMANCE CURVES
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.
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.
27.5
25.0
V
IN
= 1.2V
V
OUT
= 5.0V
100
90
80
V
OUT
= 2.0V
V
IN
= 1.6V
I
Q
PFM Mode (µA)
22.5
20.0
17.5
15.0
12.5
10.0
-40
-25
-10
5
20
35
50
65
80
V
OUT
= 2.0V
V
OUT
= 3.3V
Efficiency (%)
70
60
50
40
30
20
10
0
0.01
0.1
1
V
IN
= 0.8V
V
IN
= 1.2V
PWM / PFM
PWM ONLY
10
100
1000
Ambient Temperature (°C)
I
OUT
(mA)
FIGURE 2-1:
V
OUT
I
Q
vs. Ambient
Temperature in PFM Mode.
300
V
OUT
= 5.0V
275
250
225
200
175
150
-40
-25
-10
5
20
35
50
65
80
V
OUT
= 3.3V
V
IN
= 1.2V
FIGURE 2-4:
2.0V V
OUT
PFM / PWM
Mode Efficiency vs. I
OUT
.
100
90
80
V
OUT
= 3.3V
V
IN
= 2.5V
I
Q
PWM Mode (µA)
Efficiency (%)
70
60
50
40
30
20
10
0
0.01
0.1
1
V
IN
= 0.8V
V
IN
= 1.2V
PWM / PFM
PWM ONLY
10
100
1000
Ambient Temperature (°C)
I
OUT
(mA)
FIGURE 2-2:
V
OUT
I
Q
vs. Ambient
Temperature in PWM Mode.
600
V
OUT
= 5.0V
500
400
300
200
100
0
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
V
OUT
= 2.0V
V
OUT
= 3.3V
FIGURE 2-5:
3.3V V
OUT
PFM / PWM
Mode Efficiency vs. I
OUT
.
100
90
80
V
OUT
= 5.0V
V
IN
= 2.5V
Efficiency (%)
70
60
50
40
30
20
10
0
0.01
0.1
1
V
IN
= 1.2V
V
IN
= 1.8V
I
OUT
(mA)
PWM / PFM
PWM ONLY
10
100
1000
V
IN
(V)
I
OUT
(mA)
FIGURE 2-3:
Maximum I
OUT
vs. V
IN
.
FIGURE 2-6:
5.0V V
OUT
PFM / PWM
Mode Efficiency vs. I
OUT
.
2010 Microchip Technology Inc.
DS22234A-page 5
MICROCHIP [ MICROCHIP TECHNOLOGY ]
