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MP2270 датащи(PDF) 3 Page - Monolithic Power Systems

номер детали MP2270
подробное описание детали  1.8A, 24V, 700kHz Step-Down Converter
PDF  10 Pages
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производитель  MPS [Monolithic Power Systems]
домашняя страница  http://www.monolithicpower.com
Logo MPS - Monolithic Power Systems

MP2270 датащи(HTML) 3 Page - Monolithic Power Systems

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MP2270 – 1.8A, 24V, 700KHz STEP-DOWN CONVERTER
MP2270 Rev. 1.1
www.MonolithicPower.com
3
4/16/2010
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
ELECTRICAL CHARACTERISTICS
VIN = 12V, TA = +25°C, unless otherwise noted.
Parameters
Symbol Condition
Min
Typ
Max
Units
Feedback Voltage
VFB
4.5V
≤ VIN ≤ 24V
0.790
0.810
0.830
V
Feedback Current
IFB
VFB = 0.8V
10
nA
Switch On-Resistance
(5)
RDS(ON)
0.3
Ω
Switch Leakage
VEN = 0V, VSW = 0V
0
10
μA
Current Limit
(5)
Duty Cycle = 40%
2.0
2.5
A
Oscillator Frequency
fSW
VFB = 0.6V
700
kHz
Fold-back Frequency
VFB = 0V
230
kHz
Maximum Duty Cycle
VFB = 0.6V
87
%
Minimum On-Time
(5)
tON
100
ns
Under-Voltage Lockout Threshold Rising
2.5
2.8
3.1
V
Under-Voltage Lockout Threshold Hysteresis
150
mV
EN Input Low Voltage
0.4
V
EN Input High Voltage
1.5
V
VEN = 2V
2.1
EN Input Current
VEN = 0V
0.01
μA
Supply Current (Shutdown)
VEN = 0V
0.1
1.0
μA
Supply Current (Quiescent)
VEN = 2V, VFB = 1V
0.8
1.0
mA
Thermal Shutdown
(5)
150
°C
Note:
5) Guaranteed by design.



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