MP1492 – 2A, 4.2V-16V INPUT, FAST TRANSIENT SYNCHRONOUS STEP-DOWN CONVERTER
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
VIN=12V, VOUT=1.2V, L=2.2µH, TA=+25°C, unless otherwise noted.
Input/Output Voltage Ripple
Input/Output Voltage Ripple
Input/Output Voltage Ripple
I
= 0A
I
= 0.3A
I
= 2A
OUT
OUT
OUT
V
/AC
V
/AC
OUT
10mV/div.
V
/AC
OUT
20mV/div.
OUT
50mV/div.
V
/AC
IN
V
/AC
V
/AC
IN
IN
100mV/div.
20mV/div.
50mV/div.
V
V
V
SW
SW
SW
10V/div.
10V/div.
10V/div.
I
I
L
L
I
L
1A/div.
2A/div.
2A/div.
Start Up Through VIN
Start Up Through VIN
Shut Down Through VIN
I
= 0A
I
= 2A
I
= 0A
OUT
OUT
OUT
V
V
V
OUT
OUT
OUT
500mV/div.
500mV/div.
500mV/div.
V
V
V
IN
IN
IN
10V/div.
10V/div.
10V/div.
V
V
SW
V
SW
SW
10V/div.
10V/div.
10V/div.
I
L
I
L
2A/div.
I
1A/div.
L
2A/div.
Shut Down Through VIN
Start Up Through EN
Start Up Through EN
I
=2A
I
=0A
I
= 2A
OUT
OUT
OUT
V
V
V
OUT
OUT
OUT
500mV/div.
500mV/div.
500mV/div.
V
V
V
EN
IN
EN
10V/div.
5V/div.
10V/div.
V
V
V
SW
SW
SW
10V/div.
10V/div.
10V/div.
I
I
I
L
L
L
2A/div.
1A/div.
2A/div.
MP1492 Rev. 1.1
3/13/2012
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2012 MPS. All Rights Reserved.
6
MPS [ MONOLITHIC POWER SYSTEMS ]
