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MP28251GD датащи(PDF) 3 Page - Monolithic Power Systems

номер детали MP28251GD
подробное описание детали  20V, 4A Synchronous Step-Down Converter
PDF  15 Pages
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производитель  MPS [Monolithic Power Systems]
домашняя страница  http://www.monolithicpower.com
Logo MPS - Monolithic Power Systems

MP28251GD датащи(HTML) 3 Page - Monolithic Power Systems

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MP28251 – 20V, 4A SYNCHRONOUS STEP-DOWN CONVERTER
MP28251 Rev. 1.16
www.MonolithicPower.com
3
4/17/2013
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
ELECTRICAL CHARACTERISTICS
VIN = 12V, TA = 25°C, unless otherwise noted.
Parameters
Symbol
Condition
Min
Typ
Max
Units
Supply Current (Shutdown)
IIN
VEN = 0V
10
μA
Supply Current (Quiescent)
IIN
VEN = 2V, VFB = 1V
1
mA
HS Switch-On Resistance
HSRDS-ON
60
mΩ
LS Switch-On Resistance
LSRDS-ON
30
mΩ
Switch Leakage
SWLKG
VEN = 0V, VSW = 0V or
12V
0
10
μA
Current Limit
ILIMIT
Duty=40%
5.6
A
Oscillator Frequency
fSW
RSET=30k
400
500
600
kHz
Maximum Duty Cycle
DMAX
VFB = 700mV
90
95
%
Sync Frequency Range
fSYNC
0.3
2
MHz
Feedback Voltage
VFB
800
815
830
mV
Feedback Current
IFB
VFB = 800mV
25
50
nA
EN Input Low Voltage
VILEN
0.98
1.12
1.32
V
EN Input High Voltage
VIHEN
1.32
1.50
1.78
V
EN Pin Pull-Up Current
IEN
1.2
2.3
3.5
μA
VIN Under-Voltage Lockout
Threshold Rising
INUVVth
4.0
4.25
4.5
V
VIN Under-Voltage Lockout
Threshold Hysteresis
INUVHYS
870
mV
VCC Regulator
VCC
5
V
VCC Load Regulation
ICC=5mA
1
%
Thermal Shutdown
TSD
150
°C
Soft Start Current
ISS
8
μA
Thermal Shutdown Hysteresis
TSD-HYS
30
°C



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