MP2136 – 2.5V TO 6V INPUT, 2MHz, 1A SYNCHRONOUS STEP-DOWN CONVERTER
TYPICAL PERFORMANCE CHARACTERISTICS
V
OUT
=1.2V, L=1.2uH, C2=10uF, T
A
=25°C, unless otherwise noted.
Steady State Operation
Vin=2.5V, Vo=1.2V, Io=0A
V
OUT
/AC
10mV/div.
V
OUT
/AC
10mV/div.
Steady State Operation
Vin=2.5V, Vo=1.2V, Io=1A
V
OUT
/AC
10mV/div.
Steady State Operation
Vin=6V, Vo=1.2V, Io=0A
V
SW
2V/div.
I
INDUCTOR
500mA/div.
V
SW
2V/div.
V
SW
5V/div.
I
INDUCTOR
500mA/div.
I
INDUCTOR
500mA/div.
200ns/div.
200ns/div.
200ns/div.
Steady State Operation
Vin=6V, Vo=1.2V, Io=1A
V
OUT
/AC
10mV/div.
V
EN
2V/div.
Start-up Through Enable
Vin=2.5V, Vo=1.2V, Io=0A
V
EN
2V/div.
Start-up Through Enable
Vin=2.5V, Vo=1.2V, Io=1A
V
SW
5V/div.
V
OUT
500mV/div.
V
SW
2V/div.
I
INDUCTOR
500mA/div.
V
OUT
500mV/div.
V
SW
2V/div.
I
INDUCTOR
1A/div.
I
INDUCTOR
500mA/div.
200ns/div.
40us/div.
40us/div.
Start-Up Through EN
Vin=6V, Vo=1.2V, Io=0A
V
EN
2V/div.
V
OUT
500mV/div.
V
EN
2V/div.
V
OUT
500mV/div.
V
SW
5V/div.
Start-Up Through EN
Vin=6V, Vo=1.2V, Io=1A
V
EN
2V/div.
V
OUT
500mV/div.
V
SW
2V/div.
Power-Down Through EN
Vin=2.5V
, Vo=1.2V, Io=0A
V
SW
5V/div.
I
INDUCTOR
500mA/div.
I
INDUCTOR
1A/div.
I
INDUCTOR
500mA/div.
40us/div.
40us/div.
2s/div.
MP2136 Rev. 0.9
8/23/2010
www.MonolithicPower.com
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4
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