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MP2128 Datasheet(PDF) 4 Page - Monolithic Power Systems

Part # MP2128
Description  2.5V-6V Input, 3MHz, 1A Synchronous Step-Down Converter
PDF  8 Pages
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Manufacturer  MPS [Monolithic Power Systems]
Direct Link  http://www.monolithicpower.com
Logo MPS - Monolithic Power Systems

MP2128 Datasheet(HTML) 4 Page - Monolithic Power Systems

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MP2128 – 3MHz, 1A SYNCHRONOUS STEP-DOWN CONVERTER
MP2128 Rev. 0.9
www.MonolithicPower.com
4
7/20/2009
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2009 MPS. All Rights Reserved.
TYPICAL PERFORMANCE CHARACTERISTICS
VIN=6V, VOUT=1.8V, L=1.2µH, C2=10µF, TA=25°C, unless otherwise noted.
VEN
5V/div.
VOUT
1V/div.
VSW
5V/div.
IINDUCTOR
1A/div.
VEN
5V/div.
VOUT
1V/div.
VSW
5V/div.
IINDUCTOR
1A/div.
VEN
5V/div.
VOUT
1V/div.
VSW
5V/div.
IINDUCTOR
1A/div.
VOUT/AC
20mV/div.
VSW
5V/div.
IINDUCTOR
1A/div.
VOUT/AC
20mV/div.
VSW
5V/div.
IINDUCTOR
1A/div.
200ns/div.
200ns/div.
2s/div.
Load Transient
Load Step: 100mA-400mA,
VIN=4.2V, VOUT=3.4V
Efficiency vs. Load Current
LOAD CURRENT ( mA )
Steady State Operation
IOUT=0A
Start-up Through Enable
IOUT=0A
Start-up Through Enable
IOUT=1A
Power-down Through Enable
IOUT=0A
VEN
5V/div.
VOUT
1V/div.
VSW
5V/div.
IINDUCTOR
1A/div.
1ms/div.
Power-down Through Enable
IOUT=1A
Steady State Operation
IOUT=1A
70
75
80
85
90
95
0 100 200 300 400 500 600 700 800 9001000
4.2V to 3.4V
3.3V to 1.8V
5V to 3.4V
VOUT/AC
100mV/div.
ILOAD
200mA/div.
IINDUCTOR
200mA/div.
VOUT/AC
50mV/div.
IINDUCTOR
500mA/div.



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