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MP2482DN Datasheet(PDF) 3 Page - Monolithic Power Systems

No. de pieza MP2482DN
Descripción Electrónicos  5A, 30V, 420kHz Step-Down Converter
PDF  14 Pages
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Fabricante Electrónico  MPS [Monolithic Power Systems]
Página de inicio  http://www.monolithicpower.com
Logo MPS - Monolithic Power Systems

MP2482DN Datasheet(HTML) 3 Page - Monolithic Power Systems

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MP2482 – 5A, 30V, 420kHZ STEP-DOWN CONVERTER
MP2482 Rev.1.4
www.MonolithicPower.com
3
9/21/2011
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
Preliminary Specifications Subject to Change
© 2011 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 ≤ 30V
0.788
0.808
0.828
V
Feedback Current
IFB
VFB = 0.8V
10
nA
Switch On Resistance
(5)
RDS(ON)
50
mΩ
Switch Leakage
VEN = 0V, VSW = 0V
0
10
μA
Current Limit
(5)
7.5
9
A
Oscillator Frequency
fSW
VFB = 0.6V
310
420
530
kHz
Fold-back Frequency
VFB = 0V
25
115
205
kHz
Maximum Duty Cycle
VFB = 0.6V
85
90
%
Minimum On Time
tON
100
ns
Under Voltage Lockout Threshold Rising
3.9
4.1
4.3
V
Under Voltage Lockout Threshold Hysteresis
880
mV
EN Input Low Voltage
0.4
V
EN Input High Voltage
1.5
V
VEN = 2V
2
EN Input Current
VEN = 0V
0
μA
Sync Frequency Range (Low)
FSYNCL
300
kHz
Sync Frequency Range (High)
FSYNCH
1.5
MHz
Enable Turnoff Delay
TOFF
5.0
μs
Supply Current (Shutdown)
VEN = 0V
0
μA
Supply Current (Quiescent)
VEN = 2V, VFB = 1V
0.9
1.1
mA
Thermal Shutdown
150
°C
Power Good Control
Power Good Threshold Rising
0.69
0.74
0.79
V
Power Good Threshold Hysteresis
40
mV
PG Pin Level
VPG
PG Sink 4mA
0.4
V
Note:
5) Guaranteed by design.



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