MCP1603
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
= SHDN = 3.6V, C
OUT
= C
IN
= 4.7 µF, L = 4.7 µH, V
OUT
(ADJ) = 1.8V, I
LOAD
= 100 mA,
T
A
= +25°C. Adjustable or fixed output voltage options can be used to generate the Typical Performance Characteristics.
50
49
48
47
46
45
44
43
42
41
40
52
Quiescent Current (µA)
50
48
46
44
42
40
-40 -25 -10
5
20
35
50
65
80
o
Quiescent Current (µA)
V
OUT
= 1.8V
V
IN
= 3.6V
V
IN
= 4.2V
T
A
= +90 C
o
T
A
= +25 C
o
V
IN
= 3.0V
T
A
= - 40 C
o
95 110 125
2.7
3.05
3.4
3.75
4.1
4.45
4.8
5.15
5.5
Ambient Temperature ( C)
Input Voltage (V)
FIGURE 2-1:
100
95
Efficiency (%)
90
85
80
75
70
65
60
2.7
3.05
3.4
I
OUT
= 100 mA
I
Q
vs. Ambient Temperature.
FIGURE 2-4:
100
I
Q
vs. Input Voltage.
V
OUT
= 1.2V
V
OUT
= 1.2V
90
Efficiency (%)
80
70
60
50
40
30
20
V
IN
= 2.7V
V
IN
= 3.6V
I
OUT
= 300 mA
I
OUT
= 500 mA
V
IN
= 4.2V
3.75
4.1
4.45
4.8
5.15
5.5
0.1
1
10
100
1000
Input Voltage (V)
Output Current (mA)
FIGURE 2-2:
(V
OUT
= 1.2V).
100
95
Efficiency (%)
90
85
80
75
70
2.7
3.05
3.4
I
OUT
= 100 mA
Efficiency vs. Input Voltage
FIGURE 2-5:
(V
OUT
= 1.2V).
100
90
Efficiency (%)
80
70
60
50
40
30
20
V
IN
= 4.2V
Efficiency vs. Output Load
V
OUT
= 1.8V
V
IN
= 2.7V
V
IN
= 3.6V
I
OUT
= 300 mA
I
OUT
= 500 mA
V
OUT
= 1.8V
3.75
4.1
4.45
4.8
5.15
5.5
0.1
1
10
100
1000
Input Voltage (V)
Output Current (mA)
FIGURE 2-3:
(V
OUT
= 1.8V).
Efficiency vs. Input Voltage
FIGURE 2-6:
(V
OUT
= 1.8V).
Efficiency vs. Output Load
©
2007 Microchip Technology Inc.
DS22042A-page 7
MICROCHIP [ MICROCHIP TECHNOLOGY ]
