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MP2234 датащи(PDF) 3 Page - Monolithic Power Systems

номер детали MP2234
подробное описание детали  High-Efficiency, 2A, 16V, 800kHz Synchronous, Step-Down Converter
PDF  21 Pages
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производитель  MPS [Monolithic Power Systems]
домашняя страница  http://www.monolithicpower.com
Logo MPS - Monolithic Power Systems

MP2234 датащи(HTML) 3 Page - Monolithic Power Systems

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MP2234
– SYNCHRONOUS STEP-DOWN CONVERTER
MP2234 Rev. 1.0
www.MonolithicPower.com
3
5/16/2013
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
ELECTRICAL CHARACTERISTICS
(6)
VIN = 12V, TA = 25°C, unless otherwise noted.
Parameter
Symbol
Condition
Min
Typ
Max
Units
Supply Current (Shutdown)
IIN
VEN = 0V
1
μA
Supply Current (Quiescent)
Iq
VEN = 2V, VFB = 1V
0.6
0.8
mA
HS Switch-On Resistance
HSRDS-ON
VBST-SW=5V
100
mΩ
LS Switch-On Resistance
LSRDS-ON
VCC =5V
40
mΩ
Switch Leakage
SWLKG
VEN = 0V, VSW =12V
0.3
μA
Current Limit
ILIMIT
Under 40% Duty Cycle
3
4
A
Oscillator Frequency
fSW
VFB=0.75V
690
800
870
kHz
Fold-Back Frequency
fFB
VFB<400mV
0.25
fSW
Maximum Duty Cycle
DMAX
VFB=700mV
90
95
%
Minimum On Time
(6)
τ
ON_MIN
40
ns
Sync Frequency Range
fSYNC
0.3
2
MHz
Feedback Voltage
VFB
TA =25°C
791
807
823
mV
Feedback Current
IFB
VFB=820mV
10
50
nA
EN Rising Threshold
VEN_RISING
1.2
1.4
1.6
V
EN Hysteresis
VEN_Hysteresis
110
175
240
mV
EN Input Current
IEN
VEN=2V
2
μA
VEN=0
0
μA
EN Turn-Off Delay
ENtd-off
3
5
7
μs
VIN Under-Voltage Lockout
Threshold
—Rising
INUVVth
3.7
3.9
4.1
V
VIN Under-Voltage Lockout
Threshold
—Hysteresis
INUVHYS
530
610
690
mV
VCC Regulator
VCC
4.6
4.9
5.2
V
VCC Load Regulation
ICC=5mA
1.5
3
%
Soft-Start Current
ISS
8
11
14
μA
Thermal Shutdown
(6)
150
°C
Thermal Hysteresis
(6)
20
°C
Notes:
6) Guaranteed by design.



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