Datasheet

MCP1602
DS22061A-page 8 © 2007 Microchip Technology Inc.
Typical Performance Curves (Continued)
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.
FIGURE 2-7: Efficiency vs. Input Voltage
(V
OUT
= 3.3V).
FIGURE 2-8: PG Active Time-out vs.
Ambient Temperature.
FIGURE 2-9: Feedback Voltage vs.
Ambient Temperature.
FIGURE 2-10: Efficiency vs. Output Load
(V
OUT
= 3.3V).
FIGURE 2-11: PG Threshold Voltage vs.
Ambient Temperature.
FIGURE 2-12: Output Voltage vs. Load
Current (V
OUT
= 1.8V).
85.0
87.5
90.0
92.5
95.0
97.5
100.0
4.2 4.4 4.6 4.8 5.0 5.2 5.4
Input Voltage (V)
Efficiency (%)
V
OUT
= 3.3V
I
OUT
= 100 mA
I
OUT
= 500 mA
I
OUT
= 300 mA
200
220
240
260
280
300
320
340
-40 -25 -10 5 20 35 50 65 80 95 110 125
Ambient Temperature (°C)
PG Active Time-Out (ms)
0.812
0.816
0.820
0.824
0.828
0.832
-40 -25 -10
5
20 35 50 65 80 95
110 125
Ambient Temperature (°C)
Feedback Voltage (V)
20
30
40
50
60
70
80
90
100
0.1 1 10 100 1000
Output Current (mA)
Efficiency (%)
V
OUT
= 3.3VV
IN
= 5.5V
V
IN
= 4.2V
88
89
90
91
92
93
94
95
96
-40 -25 -10 5 20 35 50 65 80 95 110 125
Ambient Temperature (°C)
PG Threshold (% of V
OUT
)
PG Threshold High
PG Threshold Low
1.81
1.82
1.83
1.84
1.85
0 50 100 150 200 250 300 350 400 450 500
Output Current (mA)
Output Voltage (V)