MCP16321_13 Datasheet, PDF (7/34 Pages) Microchip Technology – 24V Input, 1A/2A Output, High Efficiency Synchronous Buck Regulator with Power Good Indication

MCP16321/2
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, V_IN = 12V, EN = Floating (Internally pulled up), C_IN = 20 µF, C_OUT = 2x22 µF,
L = 4.7 µH (XAL6060-472MEB), I_LOAD = 200 mA, T_A = +25°C. MCP16321 maximum output current = 1A.
100
95 ^{VIN = 6V}
90
85
V_IN = 12V
80
75
V_IN = 18V
70
65
V_IN = 24V
60
55
50
0.0
0.4
0.8
1.2
I_OUT (A)
V_OUT = 5V
1.6
2.0
FIGURE 2-1:
5V V_OUT Efficiency vs. I_OUT.
100
90
V_IN = 6V
80
70
V_IN = 12V
V_IN = 18V
60
50
V_OUT = 1.8V
40
0
0.4
0.8
1.2
1.6
2
I_OUT (A)
FIGURE 2-4:
I_OUT.
1.8V V_OUT Efficiency vs.
95
V_IN = 6V
90
85
80
75
V_IN = 12V
70
V_IN = 18V
65
V_OUT = 3.3V
60
55
V_IN = 24V
50
0
0.4
0.8
1.2
1.6
2
I_OUT (A)
FIGURE 2-2:
I_OUT.
3.3V V_OUT Efficiency vs.
100
90
V_IN = 6V
80
70
V_IN = 12V
V_IN = 18V
60
V_OUT = 2.5V
50
V_IN = 24V
40
0
0.4
0.8
1.2
1.6
2
I_OUT (A)
FIGURE 2-3:
I_OUT.
2.5V V_OUT Efficiency vs.
90
85
V_IN = 6V
V_IN = 12V
80
75
70
65
60
V_IN = 18V
55
50
V_OUT = 1.5V
45
40
0
0.4
0.8
1.2
1.6
2
I_OUT (A)
FIGURE 2-5:
I_OUT.
1.5V V_OUT Efficiency vs.
100
90
V_IN = 6V
80
70
V_IN = 8V
60
50
V_IN = 10V
V_OUT = 0.9V
40
0
0.4
0.8
1.2
1.6
2
I_OUT (A)
FIGURE 2-6:
I_OUT.
0.9V V_OUT Efficiency vs.
© 2011 Microchip Technology Inc.
DS22285A-page 7