MP1470B – SYNCHRONOUS, STEP-DOWN CONVERTER WITH INTERNAL MOSFETS
TYPICAL PERFORMANCE CHARACTERISTICS
(continued)
V
IN
= 12V, V
OUT
= 3.3V, L = 4.7µH, T
A
= +25°C, unless otherwise noted.
Startup through
Input Voltage
I
OUT
= 0A
Shutdown through
Input Voltage
I
OUT
= 0A
Start-Up through
Input Voltage
I
OUT
= 2A
V
OUT
2V/div.
V
IN
10V/div.
V
SW
5V/div.
I
L
1A/div.
V
OUT
2V/div.
V
IN
10V/div.
V
SW
5V/div.
I
L
2A/div.
V
OUT
2V/div.
V
IN
10V/div.
V
SW
5V/div.
I
L
1A/div.
Shutdown through
Input Voltage
I
OUT
= 2A
Start-Up through Enable
I
OUT
= 0A
Shutdown through Enable
I
OUT
= 0A
V
OUT
2V/div.
V
IN
10V/div.
V
OUT
2V/div.
V
EN
5V/div.
V
SW
10V/div.
V
OUT
2V/div.
V
EN
5V/div.
V
SW
10V/div.
I
L
1A/div.
V
SW
5V/div.
I
L
2A/div.
I
L
2A/div.
Startup through Enable
I
OUT
= 2A
Shutdown through Enable
I
OUT
= 2A
Input/Output Ripple
I
OUT
= 2A
V
OUT/AC
50mV/div.
V
OUT
2V/div.
V
EN
2V/div.
V
SW
10V/div.
V
OUT
2V/div.
V
EN
2V/div.
V
SW
10V/div.
V
IN/AC
200mV/div.
V
SW
10V/div.
I
L
1A/div.
I
L
1A/div.
I
L
1A/div.
MP1470B Rev. 1.0
www.MonolithicPower.com
8/25/2015
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2015 MPS. All Rights Reserved.
7
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