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參數(shù)資料
| 型號(hào)： | 1002AS |
| 廠商： | Monolithic Power Systems, Inc. |
| 英文描述： | Dual 1.2MHz, 800mA Synchronous Step-Down Converter |
| 中文描述： | 雙1.2MHz的，800mA的同步降壓轉(zhuǎn)換器 |
| 文件頁(yè)數(shù)： | 3/8頁(yè) |
| 文件大?。?/td> | 303K |
| 代理商： | 1002AS |
MP2109 – DUAL 1.2MHz 800mA SYNCHRONOUS STEP-DOWN CONVERTER
MP2109 Rev.1.3
2/21/2006
www.MonolithicPower.com
3
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
2006 MPS. All Rights Reserved.
TM
TYPICAL PERFORMANCE CHARACTERISTICS
V
IN1/IN2
= 3.3V, V
OUT1
= 1.8V, V
OUT2
= 1.2V, L
1/2
= 4.7μH, C
IN1/IN2
= 4.7μF, C
OUT1/OUT2
= 10μF, T
A
= +25
°
C,
unless otherwise noted.
MP2109-TPC07
Short Circuit Protection
(No Load)
MP2109-TPC08
Short Circuit Recovery
(No Load)
MP2109-TPC06
Startup from Shutdown
V
OUT
1V/div
I
L
0.5A/div
V
OUT
1V/div
I
L
0.5A/div
V
EN
2V/div
V
OUT
1V/div
I
L
0.5A/div
400ns/div
MP2109-TPC03
Load Transient
(I
OUT
=0mA to 500mA Step)
Medium Load Operation
(I
OUT
=400mA)
MP2109-TPC04
V
OUT AC
100mV/div.
I
LOAD
0.5A/div.
I
L
0.5A/div.
V
SW
2V/div.
V
OUT AC
20mV/div.
I
L
200mA/div.
V
SW
2V/div.
V
OUT AC
20mV/div.
I
L
500mA/div.
400ns/div
MP2109-TPC05
Heavy Load Operation
(I
OUT
=800mA)
0.606
0.604
0.602
0.600
0.598
0.596
0.594
F
-40
+20
0
-20
+40 +60 +80 +100
TEMPERATURE (
°
C)
MP2109-TPC02
Feedback Voltage vs
Temperature
100
90
80
70
60
50
E
0.0
0.4
0.2
LOAD CURRENT (A)
0.6
0.8
MP2109-TPC01
Efficiency vs
Load Current
V
OUT1
=1.8V
V
OUT2
=1.2V
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