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MP1475 데이터시트(PDF) 3 Page - Monolithic Power Systems

부품명 MP1475
상세설명  High-Efficiency, 3A, 16V, 500kHz Synchronous, Step-Down Converter
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제조업체  MPS [Monolithic Power Systems]
홈페이지  http://www.monolithicpower.com
Logo MPS - Monolithic Power Systems

MP1475 데이터시트(HTML) 3 Page - Monolithic Power Systems

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MP1475 – SYNCHRONOUS STEP-DOWN CONVERTER
MP1475 Rev. 1.01
www.MonolithicPower.com
3
4/3/2014
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2014 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
7
μA
Supply Current (Quiescent)
Iq
VEN = 2V, VFB = 1V
0.6
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
VEN = 0V, VSW =12V
1
μA
Current Limit
(6)
ILIMIT
Under 40% Duty Cycle
4.2
5
A
Oscillator Frequency
fSW
VFB=0.75V
430
500
570
kHz
Fold-Back Frequency
fFB
VFB<400mV
0.25
fSW
Maximum Duty Cycle
DMAX
VFB=700mV
90
95
%
Minimum On Time
(6)
τON_MIN
40
ns
Sync Frequency Range
fSYNC
0.2
2
MHz
TA =25°C
791
807
823
Feedback Voltage
VFB
-40°C<TA<85°C
(7)
787
807
827
mV
Feedback Current
IFB
VFB=820mV
10
50
nA
EN Rising Threshold
VEN_RISING
1.2
1.4
1.6
V
EN Falling Threshold
VEN_FALLING
1.1
1.25
1.4
V
VEN=2V
2
μA
EN Input Current
IEN
VEN=0
0
μA
EN Turn-Off Delay
ENtd-off
5
μs
Power-Good Rising Threshold
PGvth-Hi
0.9
VFB
Power-Good Falling Threshold
PGvth-Lo
0.85
VFB
Power-Good Delay
PGTd
0.4
ms
Power-Good Sink Current
Capabilily
VPG
Sink 4mA
0.4
V
Power-Good Leakage Current
IPG-LEAK
1
μA
VIN Under-Voltage Lockout
Threshold-Rising
INUVVth
3.7
3.9
4.1
V
VIN Under-Voltage Lockout
Threshold-Hysteresis
INUVHYS
650
mV
VCC Regulator
VCC
5
V
VCC Load Regulation
ICC=5mA
3
%
Soft-Start Period
τSS
1.2
ms
Thermal Shutdown
(6)
150
°C
Thermal Hysteresis
(6)
20
°C
Notes:
6) Guaranteed by design.
7) Not tested in production and guaranteed by over-temperature correlation.


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