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ZL9117M
Typical Performance Curves
Typical values are used unless otherwise noted.
100
Operating condition: T A = +25°C, No air flow, F SW = 571kHz. V DRV = 5V. C OUT = 3000μF.
100
95
3.3V
2.5V
1.8V
95
2.5V
1.8V
3.3V
90
85
90
85
80
1.0V
1.2V
80
1.0V
1.2V
75
75
70
0
2
4
6 8 10 12
14
16
18
70
0
2
4
6 8 10 12
14
16
18
OUTPUT CURRENT (A)
FIGURE 2. EFFICIENCY, V IN = 5V, FOR VARIOUS OUTPUT VOLTAGES
LISTED
OUTPUT CURRENT (A)
FIGURE 3. EFFICIENCY, V IN = 9V, FOR VARIOUS OUTPUT VOLTAGES
LISTED
I OUT STEP = 12A TO 6A
100
95
90
3.3V
2.5V
1.8V
35
V IN = 12V
30 V OUT = 1.2V
25
SLEW 2.5A/μs
20
85
15
80
1.0V
1.2V
10
5
75
0
70
0
2
4
6 8 10 12
14
16
18
-5
0
0.1
0.2
0.3
0.4
0.5 0.6
0.7
0.8
0.9
1.0
OUTPUT CURRENT (A)
FIGURE 4. EFFICIENCY, V IN = 12V, FOR VARIOUS OUTPUT
VOLTAGES LISTED
TIME (ms)
TIME (ms)
FIGURE 5. DYNAMIC RESPONSE, UNLOAD
5
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.4
V IN = 12V
0
-5
1.2
1.0
V OUT = 1.2V
t RISE = 5ms
0.8
-10
0.6
-15
V IN = 12V
-20 V OUT = 1.2V
-25 I OUT STEP = 6A TO 12A
0.4
0.2
0
-30
SLEW 2.5A/μs
-0.2
0
1
2
3
4
5 6
7
8
9
10
TIME (ms)
FIGURE 6. DYNAMIC RESPONSE, LOAD
8
FIGURE 7. SOFT-START RAMP-UP
FN7914.3
July 22, 2013
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