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MP2240 датащи(PDF) 3 Page - Monolithic Power Systems

номер детали MP2240
подробное описание детали  High-Efficiency, 3A, 16V, 800kHz Synchronous, Step-Down Converter
PDF  16 Pages
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производитель  MPS [Monolithic Power Systems]
домашняя страница  http://www.monolithicpower.com
Logo MPS - Monolithic Power Systems

MP2240 датащи(HTML) 3 Page - Monolithic Power Systems

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MP2240 – SYNCHRONOUS STEP-DOWN CONVERTER
MP2240 Rev. 1.1
www.MonolithicPower.com
3
8/20/2013
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.
Parameter
Symbol Condition
Min
Typ
Max
Units
VFB = 1V, VAAM=0.5V
0.55
0.8
Supply Current (Quiescent)
Iq
VFB = 1V, VAAM=5V
0.75
1
mA
HS Switch-On Resistance
HSRDS-ON VBST-SW=5V
80
mΩ
LS Switch-On Resistance
LSRDS-ON VCC =5V
30
mΩ
Switch Leakage
SWLKG
VSW =12V
0.1
μA
Current Limit
(5)
ILIMIT
Under 40% Duty Cycle
4
5
6
A
Oscillator Frequency
fSW
VFB=0.75V
660
800
940
kHz
Fold-Back Frequency
fFB
VFB<400mV
0.25
fSW
Maximum Duty Cycle
DMAX
VFB=750mV
90
95
%
Minimum On Time
(5)
τON_MIN
40
ns
Feedback Voltage
VFB
TA =25°C
791
807
823
mV
Feedback Current
IFB
VFB=820mV
10
50
nA
VIN Under-Voltage Lockout
Threshold—Rising
INUVVth
4.9
5.3
5.85
V
VIN Under-Voltage Lockout
Threshold—Hysteresis
INUVHYS
1.1
V
VCC Regulator
VCC
4.75
4.9
5.05
V
VCC Load Regulation
ICC=5mA
3
%
Soft-Start Current
ISS
7.6
10.5
13.4
μA
Thermal Shutdown
(5)
150
°C
Thermal Hysteresis
(5)
20
°C
Notes:
5) Guaranteed by design.



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