MCP16251 データシートの表示（PDF） - Microchip Technology
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MCP16251 Datasheet PDF : 34 Pages
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MCP16251/2
Note: Unless otherwise indicated, VIN = EN = 1.5V, COUT = CIN = 10 µF, L = 4.7 µH, VOUT = 3.3V, ILOAD = 0 mA,
TA = +25°C, SOT-23 package.
1.3 VOUT =1.8V
1.1
0.9
Startup
0.7
0.5
Shutdown
0.3
0
10 20 30 40 50 60 70 80 90
Load Current (mA)
FIGURE 2-13:
1.8VOUT Minimum Start-up
and Shutdown VIN into Resistive Load vs. IOUT.
8
7
6
P - Channel
5
4
3
2
N - Channel
1
0
0.9 1.2 1.5 1.8 2.1 2.4 2.7 3 3.3 3.6 3.9 4.2
> VIN or VOUT
FIGURE 2-16:
N-Channel and P-Channel
RDSON vs. the maximum VIN or VOUT.
1.3 VOUT = 3.3V
1.1
0.9
Startup
0.7
0.5
Shutdown
0.3
0
10 20 30 40 50 60 70 80 90 100
Load Current (mA)
FIGURE 2-14:
3.3VOUT Minimum Start-up
and Shutdown VIN into Resistive Load vs. IOUT.
1.7 VOUT = 5.0V
1.5
1.3
1.1
Startup
0.9
0.7
0.5
0.3
0
Shutdown
10 20 30 40 50 60 70 80 90 100
Load Current (mA)
FIGURE 2-15:
5.0VOUT Minimum Start-Up
and Shutdown VIN into Resistive Load vs. IOUT.
45
40
35
30 VOUT = 2.0V
25
VOUT = 3.3V
VOUT = 5.0V
20
15
10
5
0.8 1.2 1.6 2 2.4 2.8 3.2 3.6 4 4.4
Input Voltage (V)
FIGURE 2-17:
Average PFM/PWM
Threshold Current vs. VIN.
IOUT = 1 mA
VOUT 100 mV/div
AC Coupled
VSW
2 V/div
IL 100 mA/div
200 µs/div
FIGURE 2-18:
MCP16251 3.3V VOUT PFM
Mode Waveforms.
2013 Microchip Technology Inc.
DS25173A-page 7
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