MCP1640 Ver la hoja de datos (PDF) - Microchip Technology
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MCP1640
0.65V Start-up Synchronous Boost Regulator with True Output Disconnect or Input/Output Bypass Option
Microchip Technology
MCP1640 Datasheet PDF : 32 Pages
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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, VIN = EN = 1.2V, COUT = CIN = 10 µF, L = 4.7 µH, VOUT = 3.3V, ILOAD = 15 mA, TA = +25°C.
27.5
25.0
VIN = 1.2V
VOUT = 5.0V
22.5
20.0
VOUT = 3.3V
17.5
15.0
12.5
VOUT = 2.0V
10.0
-40 -25 -10 5
20 35 50 65 80
Ambient Temperature (°C)
FIGURE 2-1:
VOUT IQ vs. Ambient
Temperature in PFM Mode.
100
90
80
70
60
50
40
30
20
10
0
0.01
VOUT = 2.0V
VIN = 1.6V
VIN = 0.8V
VIN = 1.2V
PWM / PFM
PWM ONLY
0.1
1
10
100
1000
IOUT (mA)
FIGURE 2-4:
2.0V VOUT PFM / PWM
Mode Efficiency vs. IOUT.
300
275
VIN = 1.2V
VOUT = 5.0V
250
225
VOUT = 3.3V
200
175
150
-40 -25 -10
5
20
35
50
65
80
Ambient Temperature (°C)
FIGURE 2-2:
VOUT IQ vs. Ambient
Temperature in PWM Mode.
100
90
80
70
60
50
40
30
20
10
0
0.01
VOUT = 3.3V
VIN = 2.5V
VIN = 0.8V
VIN = 1.2V
PWM / PFM
PWM ONLY
0.1
1
10
100
1000
IOUT (mA)
FIGURE 2-5:
3.3V VOUT PFM / PWM
Mode Efficiency vs. IOUT.
600
500
VOUT = 3.3V
400
300
VOUT = 2.0V
VOUT = 5.0V
200
100
0
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
VIN (V)
FIGURE 2-3:
Maximum IOUT vs. VIN.
100
90
80
70
60
50
40
30
20
10
0
0.01
VOUT = 5.0V
0.1
VIN = 2.5V
VIN = 1.2V
VIN = 1.8V
1
10
IOUT (mA)
PWM / PFM
PWM ONLY
100
1000
FIGURE 2-6:
5.0V VOUT PFM / PWM
Mode Efficiency vs. IOUT.
2010 Microchip Technology Inc.
DS22234A-page 5
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