Datasheet

© 2011 Microchip Technology Inc. DS41420C-page 5
MCP1623/24
2.0 TYPICAL PERFORMANCE CURVES
Note: Unless otherwise indicated, V
IN
= EN = 1.2V, C
OUT
=C
IN
=10µF, L
=4.H, V
OUT
=3.3V, I
LOAD
=15mA, 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: MCP1623/24 I
OUTMAX
vs.
V
OUT
.
FIGURE 2-4: MCP1624 Efficiency vs.
I
OUT
, V
OUT
= 2.0V.
FIGURE 2-5: MCP1624 Efficiency vs.
I
OUT
, V
OUT
= 3.3V.
FIGURE 2-6: MCP1624 Efficiency vs.
I
OUT
, V
OUT
= 5.0V.
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.
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 Mode (µA)
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
PWM Mode (µA)
V
OUT
= 3.3V
V
OUT
= 5.0V
V
IN
= 1.2V
0
50
100
150
200
250
300
350
0.511.522.533.544.55
Input Voltage (V)
V
OUT
= 3.3V
V
OUT
= 2.0V
V
OUT
= 5.0V
Output Current (mA)
0
10
20
30
40
50
60
70
80
90
100
0.01 0.1 1 10 100 1000
I
OUT
(mA)
V
IN
= 0.8V
V
IN
= 1.2V
V
IN
= 1.6V
Efficiency (%)
0
10
20
30
40
50
60
70
80
90
100
0.01 0.1 1 10 100 1000
I
OUT
(mA)
V
IN
= 0.8V
V
IN
= 1.2V
V
IN
= 2.5V
Efficiency (%)
0
10
20
30
40
50
60
70
80
90
100
0.01 0.1 1 10 100 1000
I
OUT
(mA)
V
IN
= 3.6V
V
IN
= 1.2V
V
IN
= 1.8V
Efficiency (%)