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MP2309 – 1A, 23V, 340KHz SYNCHRONOUS RECTIFIED STEP-DOWN CONVERTER
MP2309 Rev. 1.4
3/13/2006
www.MonolithicPower.com
4
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
2006 MPS. All Rights Reserved.
TM
TYPICAL PERFORMANCE CHARACTERISTICS
V
IN
= 12V, V
OUT
= 3.3V, L = 10μH, C1 = 10μF, C2 = 22μF, T
A
= +25°C, unless otherwise noted.
No Load Operation
No Load
1A Load
MP2309-TPC04
MP2309-TPC05
MP2309-TPC06
MP2309-TPC01
MP2309-TPC02
MP2309-TPC03
MP2309-TPC07
MP2309-TPC8
MP2309-TPC09
V
5V/div.
V
OUT
2V/div.
V
SW
10V/div.
I
L
1A/div.
V
5V/div.
V
2V/div.
V
SW
10V/div.
I
L
1A/div.
V
IN, AC
200mV/div.
V
O, AC
20mV/div.
V
SW
10V/div.
I
L
1A/div.
V
IN, AC
20mV/div.
V
O, AC
20mV/div.
V
SW
10V/div.
I
L
1A/div.
V
OUT
200mV/div.
i
1A/div.
I
L
1A/div.
V
2V/div.
I
L
1A/div.
V
OUT
2V/div.
I
L
1A/div.
V
5V/div.
V
2V/div.
V
SW
10V/div.
I
L
1A/div.
V
EN
5V/div.
V
2V/div.
V
10V/div.
I
L
1A/div.
Shutdown through Enable
V
IN
= 12V, V
OUT
= 3.3V, No Load
Short Circuit Recovery
Short Circuit Entry
Load Transient Test
V
IN
= 12V, V
OUT
= 3.3V,
I
OUT
= 0.2A to 1A steps
Shutdown through Enable
V
IN
= 12V, V
OUT
= 3.3V,
I
OUT
= 1A (Resistance Load)
Full Load Operation
2ms/div.
2ms/div.
2ms/div.
2ms/div.
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