MCP1640/B/C/D
2.0
TYPICAL PERFORMANCE CURVES
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.
Note: Unless otherwise indicated, V = EN = 1.2V, C
= C = 10 µF, L = 4.7 µH, V
= 3.3V, I
= 15 mA, T = +25°C.
IN
OUT
IN
OUT
LOAD
A
VOUT = 2.0V
27.5
100
90
80
70
60
50
40
30
20
10
VIN = 1.6V
VOUT = 5.0V
VIN = 1.2V
25.0
22.5
20.0
17.5
15.0
12.5
10.0
VIN = 0.8V
VOUT = 3.3V
VIN = 1.2V
PWM / PFM
PWM ONLY
VOUT = 2.0V
0
0.01
0.1
1
10
100
1000
-40
-25
-10
5
20
35
50
65
80
IOUT (mA)
Ambient Temperature (°C)
FIGURE 2-1:
VOUT IQ vs. Ambient
FIGURE 2-4:
2.0V VOUT PFM / PWM
Temperature in PFM Mode.
Mode Efficiency vs. IOUT.
VOUT = 3.3V
100
90
80
70
60
50
40
30
20
10
0
VIN = 2.5V
300
VOUT = 5.0V
VIN = 1.2V
275
250
225
200
175
150
VIN = 0.8V
VIN = 1.2V
VOUT = 3.3V
PWM / PFM
PWM ONLY
0.01
0.1
1
10
100
1000
-40
-25
-10
5
20
35
50
65
80
IOUT (mA)
Ambient Temperature (°C)
FIGURE 2-2:
VOUT IQ vs. Ambient
FIGURE 2-5:
3.3V VOUT PFM / PWM
Temperature in PWM Mode.
Mode Efficiency vs. IOUT
.
600
100
90
80
70
60
50
40
30
20
10
0
VOUT = 5.0V
VIN = 2.5V
VOUT = 5.0V
500
VOUT = 3.3V
VIN = 1.8V
VIN = 1.2V
400
VOUT = 2.0V
300
200
100
0
PWM / PFM
PWM ONLY
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
0.01
0.1
1
10
100
1000
VIN (V)
IOUT (mA)
FIGURE 2-3:
Maximum IOUT vs. VIN.
FIGURE 2-6:
5.0V VOUT PFM / PWM
Mode Efficiency vs. IOUT
.
2010 Microchip Technology Inc.
DS22234A-page 5
MICROCHIP [ MICROCHIP ]
