MP1584 – 3A, 1.5MHz, 28V STEP-DOWN CONVERTER
TYPICAL PERFORMANCE CHARACTERISTICS
(continued)
V
IN
= 12V, C1 = 10µF, C2 = 22µF, L1 = 10µH, f
SW
=500kHz, and T
A
= +25C, unless otherwise noted.
Startup
I
OUT
= 0.1A
Shutdown
I
OUT
= 0.1A
Startup
I
OUT
= 1A
V
EN
5V/div.
V
EN
5V/div.
V
EN
5V/div.
V
OUT
2V/div.
V
SW
10V/div.
I
L
1A/div.
V
OUT
2V/div.
V
SW
10V/div.
I
L
1A/div.
V
OUT
2V/div.
V
SW
10V/div.
I
L
1A/div.
5ms/div.
1ms/div.
5ms/div.
Shutdown
I
OUT
= 1A
Startup
I
OUT
= 2A
Shutdown
I
OUT
= 2A
V
EN
5V/div.
V
EN
5V/div.
V
EN
5V/div.
V
OUT
2V/div.
V
SW
10V/div.
I
L
1A/div.
V
OUT
2V/div.
V
SW
10V/div.
I
L
2A/div.
V
OUT
2V/div.
V
SW
10V/div.
I
L
2A/div.
5ms/div.
Short Circuit Entry
I
OUT
= 0.1A to Short
Short Circuit Recovery
I
OUT
= Short to 0.1A
V
OUT
2V/div.
V
OUT
2V/div.
I
L
1A/div.
I
L
1A/div.
MP1584 Rev. 1.0
8/8/2011
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6
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