MIC24045 Datasheet, PDF (8/46 Pages) Microchip Technology – I2C Programmable, 4.5V-19V Input, 5A Step-Down Converter

MIC24045
2.0 TYPICAL CHARACTERISTIC 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, f_S = 660 kHz, I_LIM = I_{LIM_LS3}, L = 2.2 µH, T_A = +25°C.
30
f_s = 1.2 MHz
20
f_s = 660 kHz
1.3
Turn-on
1.2
10
f_s = 310 kHz
V_OUT = 1.0V
0 ^{IOUT = 0 mA}
4
9
14
19
Input Voltage (V)
FIGURE 2-1:
Operating Supply Current
vs. Input Voltage, Switching.
5.5
I_VDDA= 0 mA
5
I_VDDA= 10 mA
4.5
4
3.5
4
FIGURE 2-2:
9
14
19
Input Voltage (V)
V_DDA vs. Input Voltage.
8
I_{LIM_LS3}
6
I_{LIM_LS2}
I_{LIM_LS1}
4
2
f_s = 660 kHz
V_OUT = 1.0V
0
4
FIGURE 2-3:
Input Voltage.
I_{LIM_LS0}
9
14
19
Input Voltage (V)
Low-Side Current Limits vs.
1.1
Turn-off
1
4
FIGURE 2-4:
Voltage.
30
20
9
14
19
Input Voltage (V)
Enable Thresholds vs. Input
f_s = 1.2 MHz
f_s = 660 kHz
10
f_s = 310 kHz
V_OUT = 1.0V
0 ^{IOUT = 0 mA}
-40 -25 -10 5 20 35 50 65 80 95 110 125
Temperature (°C)
FIGURE 2-5:
Operating Supply Current
vs. Temperature, Switching.
0.998
0.997
0.996
0.995
0.994
-40 -25 -10 5 20 35 50 65
Temperature (°C)
V_OUT = 1.0V
I_OUT = 0 mA
f_s = 660 kHz
80 95 110 125
FIGURE 2-6:
Temperature.
OUTSNS Voltage vs.
DS20005568A-page 8
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