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參數(shù)資料
| 型號： | EV0060 |
| 廠商： | Monolithic Power Systems, Inc. |
| 英文描述： | 1.2A Synchronous Rectified Step-Down Converter |
| 中文描述： | 1.2A的同步整流降壓轉(zhuǎn)換器 |
| 文件頁數(shù)： | 3/11頁 |
| 文件大?。?/td> | 309K |
| 代理商： | EV0060 |
MP1567 – 1.2A SYNCHRONOUS RECTIFIED STEP-DOWN CONVERTER
MP1567 Rev. 2.3
1/3/2006
www.MonolithicPower.com
3
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
2006 MPS. All Rights Reserved.
TM
ELECTRICAL CHARACTERISTICS
(continued)
V
IN
= 5V, T
A
= +25
°
C, unless otherwise noted.
Parameter
Error Amplifier
Voltage Gain
Transconductance
COMP Maximum Output Current
FB Regulation Voltage
FB Input Bias Current
Soft-Start
Soft-Start Current
Output Switch On-Resistance
Symbol
Condition
Min
Typ
Max
Units
A
VEA
G
EA
V
FB
I
FB
FB = 0.9V
400
300
±30
905
–100
V/V
μA/V
μA
mV
nA
875
I
SS
2
μA
V
IN
= 5V
V
IN
= 3V
V
IN
= 5V
V
IN
= 3V
265
330
220
270
2.0
350
160
m
m
m
m
A
mA
°
C
Switch On Resistance
Synchronous Rectifier On Resistance
Switch Current Limit (Source)
Synchronous Rectifier Current Limit (Sink)
Thermal Shutdown
1.5
TYPICAL PERFORMANCE CHARACTERISTICS
V
IN
= 3.3V, V
OUT
= 1.8V, T
A
= +25
°
C, unless otherwise noted.
Current Limit vs.
Duty Cycle
2.5
MP1567-TPC01
V
OUT
50mV/div.
I
0.5A/div.
MP1567-TPC02
Load Transient
0.1A to 1A Load Step
V
SS
1V/div.
V
1V/div.
I
IN
0.5A/div.
2ms/div.
MP1567-TPC03
V
OUT
1V/div.
V
1mV/div.
I
INDUCTOR
2ms/div.
MP1567-TPC04
Output Short Circuit
I
OUT
= 1.2A
V
SW
2V/div.
I
INDUCTOR
MP1567-TPC05
Steady State
2.0
1.5
1.0
0.5
0
C
0
20
DUTY CYCLE (%)
40
60
80
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